Eric,
Great. Then there should be no big issue on opteron any more.
Can you send to the new raminit.c to me now?
Regards
Yinghai Lu
YhLu YhLu@tyan.com writes:
Eric,
Great. Then there should be no big issue on opteron any more.
Can you send to the new raminit.c to me now?
Here is my most recent snapshot, which is slightly newer than what I have in the public CVS tree.
I think I need to scrub all of memory on the B3 stepping before I start using it. I have not tested anything that is C0 specific yet.
Eric
#include <cpu/k8/mtrr.h> #include "raminit.h"
/* Function 2 */ #define DRAM_CSBASE 0x40 #define DRAM_CSMASK 0x60 #define DRAM_BANK_ADDR_MAP 0x80 #define DRAM_TIMING_LOW 0x88 #define DTL_TCL_SHIFT 0 #define DTL_TCL_MASK 0x7 #define DTL_CL_2 1 #define DTL_CL_3 2 #define DTL_CL_2_5 5 #define DTL_TRC_SHIFT 4 #define DTL_TRC_MASK 0xf #define DTL_TRC_BASE 7 #define DTL_TRC_MIN 7 #define DTL_TRC_MAX 22 #define DTL_TRFC_SHIFT 8 #define DTL_TRFC_MASK 0xf #define DTL_TRFC_BASE 9 #define DTL_TRFC_MIN 9 #define DTL_TRFC_MAX 24 #define DTL_TRCD_SHIFT 12 #define DTL_TRCD_MASK 0x7 #define DTL_TRCD_BASE 0 #define DTL_TRCD_MIN 2 #define DTL_TRCD_MAX 6 #define DTL_TRRD_SHIFT 16 #define DTL_TRRD_MASK 0x7 #define DTL_TRRD_BASE 0 #define DTL_TRRD_MIN 2 #define DTL_TRRD_MAX 4 #define DTL_TRAS_SHIFT 20 #define DTL_TRAS_MASK 0xf #define DTL_TRAS_BASE 0 #define DTL_TRAS_MIN 5 #define DTL_TRAS_MAX 15 #define DTL_TRP_SHIFT 24 #define DTL_TRP_MASK 0x7 #define DTL_TRP_BASE 0 #define DTL_TRP_MIN 2 #define DTL_TRP_MAX 6 #define DTL_TWR_SHIFT 28 #define DTL_TWR_MASK 0x1 #define DTL_TWR_BASE 2 #define DTL_TWR_MIN 2 #define DTL_TWR_MAX 3 #define DRAM_TIMING_HIGH 0x8c #define DTH_TWTR_SHIFT 0 #define DTH_TWTR_MASK 0x1 #define DTH_TWTR_BASE 1 #define DTH_TWTR_MIN 1 #define DTH_TWTR_MAX 2 #define DTH_TRWT_SHIFT 4 #define DTH_TRWT_MASK 0x7 #define DTH_TRWT_BASE 1 #define DTH_TRWT_MIN 1 #define DTH_TRWT_MAX 6 #define DTH_TREF_SHIFT 8 #define DTH_TREF_MASK 0x1f #define DTH_TREF_100MHZ_4K 0x00 #define DTH_TREF_133MHZ_4K 0x01 #define DTH_TREF_166MHZ_4K 0x02 #define DTH_TREF_200MHZ_4K 0x03 #define DTH_TREF_100MHZ_8K 0x08 #define DTH_TREF_133MHZ_8K 0x09 #define DTH_TREF_166MHZ_8K 0x0A #define DTH_TREF_200MHZ_8K 0x0B #define DTH_TWCL_SHIFT 20 #define DTH_TWCL_MASK 0x7 #define DTH_TWCL_BASE 1 #define DTH_TWCL_MIN 1 #define DTH_TWCL_MAX 2 #define DRAM_CONFIG_LOW 0x90 #define DCL_DLL_Disable (1<<0) #define DCL_D_DRV (1<<1) #define DCL_QFC_EN (1<<2) #define DCL_DisDqsHys (1<<3) #define DCL_DramInit (1<<8) #define DCL_DramEnable (1<<10) #define DCL_MemClrStatus (1<<11) #define DCL_ESR (1<<12) #define DCL_SRS (1<<13) #define DCL_128BitEn (1<<16) #define DCL_DimmEccEn (1<<17) #define DCL_UnBufDimm (1<<18) #define DCL_32ByteEn (1<<19) #define DCL_x4DIMM_SHIFT 20 #define DRAM_CONFIG_HIGH 0x94 #define DCH_ASYNC_LAT_SHIFT 0 #define DCH_ASYNC_LAT_MASK 0xf #define DCH_ASYNC_LAT_BASE 0 #define DCH_ASYNC_LAT_MIN 0 #define DCH_ASYNC_LAT_MAX 15 #define DCH_RDPREAMBLE_SHIFT 8 #define DCH_RDPREAMBLE_MASK 0xf #define DCH_RDPREAMBLE_BASE ((2<<1)+0) /* 2.0 ns */ #define DCH_RDPREAMBLE_MIN ((2<<1)+0) /* 2.0 ns */ #define DCH_RDPREAMBLE_MAX ((9<<1)+1) /* 9.5 ns */ #define DCH_IDLE_LIMIT_SHIFT 16 #define DCH_IDLE_LIMIT_MASK 0x7 #define DCH_IDLE_LIMIT_0 0 #define DCH_IDLE_LIMIT_4 1 #define DCH_IDLE_LIMIT_8 2 #define DCH_IDLE_LIMIT_16 3 #define DCH_IDLE_LIMIT_32 4 #define DCH_IDLE_LIMIT_64 5 #define DCH_IDLE_LIMIT_128 6 #define DCH_IDLE_LIMIT_256 7 #define DCH_DYN_IDLE_CTR_EN (1 << 19) #define DCH_MEMCLK_SHIFT 20 #define DCH_MEMCLK_MASK 0x7 #define DCH_MEMCLK_100MHZ 0 #define DCH_MEMCLK_133MHZ 2 #define DCH_MEMCLK_166MHZ 5 #define DCH_MEMCLK_200MHZ 7 #define DCH_MEMCLK_VALID (1 << 25) #define DCH_MEMCLK_EN0 (1 << 26) #define DCH_MEMCLK_EN1 (1 << 27) #define DCH_MEMCLK_EN2 (1 << 28) #define DCH_MEMCLK_EN3 (1 << 29)
/* Function 3 */ #define MCA_NB_CONFIG 0x44 #define MNC_ECC_EN (1 << 22) #define MNC_CHIPKILL_EN (1 << 23) #define SCRUB_CONTROL 0x58 #define SCRUB_NONE 0 #define SCRUB_40ns 1 #define SCRUB_80ns 2 #define SCRUB_160ns 3 #define SCRUB_320ns 4 #define SCRUB_640ns 5 #define SCRUB_1_28us 6 #define SCRUB_2_56us 7 #define SCRUB_5_12us 8 #define SCRUB_10_2us 9 #define SCRUB_20_5us 10 #define SCRUB_41_0us 11 #define SCRUB_81_9us 12 #define SCRUB_163_8us 13 #define SCRUB_327_7us 14 #define SCRUB_655_4us 15 #define SCRUB_1_31ms 16 #define SCRUB_2_62ms 17 #define SCRUB_5_24ms 18 #define SCRUB_10_49ms 19 #define SCRUB_20_97ms 20 #define SCRUB_42ms 21 #define SCRUB_84ms 22 #define SC_DRAM_SCRUB_RATE_SHFIT 0 #define SC_DRAM_SCRUB_RATE_MASK 0x1f #define SC_L2_SCRUB_RATE_SHIFT 8 #define SC_L2_SCRUB_RATE_MASK 0x1f #define SC_L1D_SCRUB_RATE_SHIFT 16 #define SC_L1D_SCRUB_RATE_MASK 0x1f #define SCRUB_ADDR_LOW 0x5C #define SCRUB_ADDR_HIGH 0x60 #define NORTHBRIDGE_CAP 0xE8 #define NBCAP_128Bit 0x0001 #define NBCAP_MP 0x0002 #define NBCAP_BIG_MP 0x0004 #define NBCAP_ECC 0x0004 #define NBCAP_CHIPKILL_ECC 0x0010 #define NBCAP_MEMCLK_SHIFT 5 #define NBCAP_MEMCLK_MASK 3 #define NBCAP_MEMCLK_100MHZ 3 #define NBCAP_MEMCLK_133MHZ 2 #define NBCAP_MEMCLK_166MHZ 1 #define NBCAP_MEMCLK_200MHZ 0 #define NBCAP_MEMCTRL 0x0100
static void setup_resource_map(const unsigned int *register_values, int max) { int i; print_debug("setting up resource map....\r\n"); for(i = 0; i < max; i += 3) { device_t dev; unsigned where; unsigned long reg; #if 0 print_debug_hex32(register_values[i]); print_debug(" <-"); print_debug_hex32(register_values[i+2]); print_debug("\r\n"); #endif dev = register_values[i] & ~0xff; where = register_values[i] & 0xff; reg = pci_read_config32(dev, where); reg &= register_values[i+1]; reg |= register_values[i+2]; pci_write_config32(dev, where, reg); #if 0 reg = pci_read_config32(register_values[i]); reg &= register_values[i+1]; reg |= register_values[i+2] & ~register_values[i+1]; pci_write_config32(register_values[i], reg); #endif } print_debug("done.\r\n"); }
static void setup_default_resource_map(void) { static const unsigned int register_values[] = { /* Careful set limit registers before base registers which contain the enables */ /* DRAM Limit i Registers * F1:0x44 i = 0 * F1:0x4C i = 1 * F1:0x54 i = 2 * F1:0x5C i = 3 * F1:0x64 i = 4 * F1:0x6C i = 5 * F1:0x74 i = 6 * F1:0x7C i = 7 * [ 2: 0] Destination Node ID * 000 = Node 0 * 001 = Node 1 * 010 = Node 2 * 011 = Node 3 * 100 = Node 4 * 101 = Node 5 * 110 = Node 6 * 111 = Node 7 * [ 7: 3] Reserved * [10: 8] Interleave select * specifies the values of A[14:12] to use with interleave enable. * [15:11] Reserved * [31:16] DRAM Limit Address i Bits 39-24 * This field defines the upper address bits of a 40 bit address * that define the end of the DRAM region. */ PCI_ADDR(0, 0x18, 1, 0x44), 0x0000f8f8, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x4C), 0x0000f8f8, 0x00000001, PCI_ADDR(0, 0x18, 1, 0x54), 0x0000f8f8, 0x00000002, PCI_ADDR(0, 0x18, 1, 0x5C), 0x0000f8f8, 0x00000003, PCI_ADDR(0, 0x18, 1, 0x64), 0x0000f8f8, 0x00000004, PCI_ADDR(0, 0x18, 1, 0x6C), 0x0000f8f8, 0x00000005, PCI_ADDR(0, 0x18, 1, 0x74), 0x0000f8f8, 0x00000006, PCI_ADDR(0, 0x18, 1, 0x7C), 0x0000f8f8, 0x00000007, /* DRAM Base i Registers * F1:0x40 i = 0 * F1:0x48 i = 1 * F1:0x50 i = 2 * F1:0x58 i = 3 * F1:0x60 i = 4 * F1:0x68 i = 5 * F1:0x70 i = 6 * F1:0x78 i = 7 * [ 0: 0] Read Enable * 0 = Reads Disabled * 1 = Reads Enabled * [ 1: 1] Write Enable * 0 = Writes Disabled * 1 = Writes Enabled * [ 7: 2] Reserved * [10: 8] Interleave Enable * 000 = No interleave * 001 = Interleave on A[12] (2 nodes) * 010 = reserved * 011 = Interleave on A[12] and A[14] (4 nodes) * 100 = reserved * 101 = reserved * 110 = reserved * 111 = Interleve on A[12] and A[13] and A[14] (8 nodes) * [15:11] Reserved * [13:16] DRAM Base Address i Bits 39-24 * This field defines the upper address bits of a 40-bit address * that define the start of the DRAM region. */ PCI_ADDR(0, 0x18, 1, 0x40), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x48), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x50), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x58), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x60), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x68), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x70), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x78), 0x0000f8fc, 0x00000000,
/* Memory-Mapped I/O Limit i Registers * F1:0x84 i = 0 * F1:0x8C i = 1 * F1:0x94 i = 2 * F1:0x9C i = 3 * F1:0xA4 i = 4 * F1:0xAC i = 5 * F1:0xB4 i = 6 * F1:0xBC i = 7 * [ 2: 0] Destination Node ID * 000 = Node 0 * 001 = Node 1 * 010 = Node 2 * 011 = Node 3 * 100 = Node 4 * 101 = Node 5 * 110 = Node 6 * 111 = Node 7 * [ 3: 3] Reserved * [ 5: 4] Destination Link ID * 00 = Link 0 * 01 = Link 1 * 10 = Link 2 * 11 = Reserved * [ 6: 6] Reserved * [ 7: 7] Non-Posted * 0 = CPU writes may be posted * 1 = CPU writes must be non-posted * [31: 8] Memory-Mapped I/O Limit Address i (39-16) * This field defines the upp adddress bits of a 40-bit address that * defines the end of a memory-mapped I/O region n */ PCI_ADDR(0, 0x18, 1, 0x84), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x8C), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x94), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x9C), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xA4), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xAC), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xB4), 0x00000048, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xBC), 0x00000048, 0x00ffff00,
/* Memory-Mapped I/O Base i Registers * F1:0x80 i = 0 * F1:0x88 i = 1 * F1:0x90 i = 2 * F1:0x98 i = 3 * F1:0xA0 i = 4 * F1:0xA8 i = 5 * F1:0xB0 i = 6 * F1:0xB8 i = 7 * [ 0: 0] Read Enable * 0 = Reads disabled * 1 = Reads Enabled * [ 1: 1] Write Enable * 0 = Writes disabled * 1 = Writes Enabled * [ 2: 2] Cpu Disable * 0 = Cpu can use this I/O range * 1 = Cpu requests do not use this I/O range * [ 3: 3] Lock * 0 = base/limit registers i are read/write * 1 = base/limit registers i are read-only * [ 7: 4] Reserved * [31: 8] Memory-Mapped I/O Base Address i (39-16) * This field defines the upper address bits of a 40bit address * that defines the start of memory-mapped I/O region i */ PCI_ADDR(0, 0x18, 1, 0x80), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x88), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x90), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x98), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xA0), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xA8), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xB0), 0x000000f0, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xB8), 0x000000f0, 0x00fc0003,
/* PCI I/O Limit i Registers * F1:0xC4 i = 0 * F1:0xCC i = 1 * F1:0xD4 i = 2 * F1:0xDC i = 3 * [ 2: 0] Destination Node ID * 000 = Node 0 * 001 = Node 1 * 010 = Node 2 * 011 = Node 3 * 100 = Node 4 * 101 = Node 5 * 110 = Node 6 * 111 = Node 7 * [ 3: 3] Reserved * [ 5: 4] Destination Link ID * 00 = Link 0 * 01 = Link 1 * 10 = Link 2 * 11 = reserved * [11: 6] Reserved * [24:12] PCI I/O Limit Address i * This field defines the end of PCI I/O region n * [31:25] Reserved */ PCI_ADDR(0, 0x18, 1, 0xC4), 0xFE000FC8, 0x01fff000, PCI_ADDR(0, 0x18, 1, 0xCC), 0xFE000FC8, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xD4), 0xFE000FC8, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xDC), 0xFE000FC8, 0x00000000,
/* PCI I/O Base i Registers * F1:0xC0 i = 0 * F1:0xC8 i = 1 * F1:0xD0 i = 2 * F1:0xD8 i = 3 * [ 0: 0] Read Enable * 0 = Reads Disabled * 1 = Reads Enabled * [ 1: 1] Write Enable * 0 = Writes Disabled * 1 = Writes Enabled * [ 3: 2] Reserved * [ 4: 4] VGA Enable * 0 = VGA matches Disabled * 1 = matches all address < 64K and where A[9:0] is in the * range 3B0-3BB or 3C0-3DF independen of the base & limit registers * [ 5: 5] ISA Enable * 0 = ISA matches Disabled * 1 = Blocks address < 64K and in the last 768 bytes of eack 1K block * from matching agains this base/limit pair * [11: 6] Reserved * [24:12] PCI I/O Base i * This field defines the start of PCI I/O region n * [31:25] Reserved */ PCI_ADDR(0, 0x18, 1, 0xC0), 0xFE000FCC, 0x00000003, PCI_ADDR(0, 0x18, 1, 0xC8), 0xFE000FCC, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xD0), 0xFE000FCC, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xD8), 0xFE000FCC, 0x00000000,
/* Config Base and Limit i Registers * F1:0xE0 i = 0 * F1:0xE4 i = 1 * F1:0xE8 i = 2 * F1:0xEC i = 3 * [ 0: 0] Read Enable * 0 = Reads Disabled * 1 = Reads Enabled * [ 1: 1] Write Enable * 0 = Writes Disabled * 1 = Writes Enabled * [ 2: 2] Device Number Compare Enable * 0 = The ranges are based on bus number * 1 = The ranges are ranges of devices on bus 0 * [ 3: 3] Reserved * [ 6: 4] Destination Node * 000 = Node 0 * 001 = Node 1 * 010 = Node 2 * 011 = Node 3 * 100 = Node 4 * 101 = Node 5 * 110 = Node 6 * 111 = Node 7 * [ 7: 7] Reserved * [ 9: 8] Destination Link * 00 = Link 0 * 01 = Link 1 * 10 = Link 2 * 11 - Reserved * [15:10] Reserved * [23:16] Bus Number Base i * This field defines the lowest bus number in configuration region i * [31:24] Bus Number Limit i * This field defines the highest bus number in configuration regin i */ PCI_ADDR(0, 0x18, 1, 0xE0), 0x0000FC88, 0xff000003, PCI_ADDR(0, 0x18, 1, 0xE4), 0x0000FC88, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xE8), 0x0000FC88, 0x00000000, PCI_ADDR(0, 0x18, 1, 0xEC), 0x0000FC88, 0x00000000, }; int max; max = sizeof(register_values)/sizeof(register_values[0]); setup_resource_map(register_values, max); }
static void sdram_set_registers(const struct mem_controller *ctrl) { static const unsigned int register_values[] = {
/* Careful set limit registers before base registers which contain the enables */ /* DRAM Limit i Registers * F1:0x44 i = 0 * F1:0x4C i = 1 * F1:0x54 i = 2 * F1:0x5C i = 3 * F1:0x64 i = 4 * F1:0x6C i = 5 * F1:0x74 i = 6 * F1:0x7C i = 7 * [ 2: 0] Destination Node ID * 000 = Node 0 * 001 = Node 1 * 010 = Node 2 * 011 = Node 3 * 100 = Node 4 * 101 = Node 5 * 110 = Node 6 * 111 = Node 7 * [ 7: 3] Reserved * [10: 8] Interleave select * specifies the values of A[14:12] to use with interleave enable. * [15:11] Reserved * [31:16] DRAM Limit Address i Bits 39-24 * This field defines the upper address bits of a 40 bit address * that define the end of the DRAM region. */ PCI_ADDR(0, 0x18, 1, 0x44), 0x0000f8f8, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x4C), 0x0000f8f8, 0x00000001, PCI_ADDR(0, 0x18, 1, 0x54), 0x0000f8f8, 0x00000002, PCI_ADDR(0, 0x18, 1, 0x5C), 0x0000f8f8, 0x00000003, PCI_ADDR(0, 0x18, 1, 0x64), 0x0000f8f8, 0x00000004, PCI_ADDR(0, 0x18, 1, 0x6C), 0x0000f8f8, 0x00000005, PCI_ADDR(0, 0x18, 1, 0x74), 0x0000f8f8, 0x00000006, PCI_ADDR(0, 0x18, 1, 0x7C), 0x0000f8f8, 0x00000007, /* DRAM Base i Registers * F1:0x40 i = 0 * F1:0x48 i = 1 * F1:0x50 i = 2 * F1:0x58 i = 3 * F1:0x60 i = 4 * F1:0x68 i = 5 * F1:0x70 i = 6 * F1:0x78 i = 7 * [ 0: 0] Read Enable * 0 = Reads Disabled * 1 = Reads Enabled * [ 1: 1] Write Enable * 0 = Writes Disabled * 1 = Writes Enabled * [ 7: 2] Reserved * [10: 8] Interleave Enable * 000 = No interleave * 001 = Interleave on A[12] (2 nodes) * 010 = reserved * 011 = Interleave on A[12] and A[14] (4 nodes) * 100 = reserved * 101 = reserved * 110 = reserved * 111 = Interleve on A[12] and A[13] and A[14] (8 nodes) * [15:11] Reserved * [13:16] DRAM Base Address i Bits 39-24 * This field defines the upper address bits of a 40-bit address * that define the start of the DRAM region. */ PCI_ADDR(0, 0x18, 1, 0x40), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x48), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x50), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x58), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x60), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x68), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x70), 0x0000f8fc, 0x00000000, PCI_ADDR(0, 0x18, 1, 0x78), 0x0000f8fc, 0x00000000,
/* DRAM CS Base Address i Registers * F2:0x40 i = 0 * F2:0x44 i = 1 * F2:0x48 i = 2 * F2:0x4C i = 3 * F2:0x50 i = 4 * F2:0x54 i = 5 * F2:0x58 i = 6 * F2:0x5C i = 7 * [ 0: 0] Chip-Select Bank Enable * 0 = Bank Disabled * 1 = Bank Enabled * [ 8: 1] Reserved * [15: 9] Base Address (19-13) * An optimization used when all DIMM are the same size... * [20:16] Reserved * [31:21] Base Address (35-25) * This field defines the top 11 addresses bit of a 40-bit * address that define the memory address space. These * bits decode 32-MByte blocks of memory. */ PCI_ADDR(0, 0x18, 2, 0x40), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x44), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x48), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x4C), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x50), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x54), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x58), 0x001f01fe, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x5C), 0x001f01fe, 0x00000000, /* DRAM CS Mask Address i Registers * F2:0x60 i = 0 * F2:0x64 i = 1 * F2:0x68 i = 2 * F2:0x6C i = 3 * F2:0x70 i = 4 * F2:0x74 i = 5 * F2:0x78 i = 6 * F2:0x7C i = 7 * Select bits to exclude from comparison with the DRAM Base address register. * [ 8: 0] Reserved * [15: 9] Address Mask (19-13) * Address to be excluded from the optimized case * [20:16] Reserved * [29:21] Address Mask (33-25) * The bits with an address mask of 1 are excluded from address comparison * [31:30] Reserved * */ PCI_ADDR(0, 0x18, 2, 0x60), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x64), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x68), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x6C), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x70), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x74), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x78), 0xC01f01ff, 0x00000000, PCI_ADDR(0, 0x18, 2, 0x7C), 0xC01f01ff, 0x00000000, /* DRAM Bank Address Mapping Register * F2:0x80 * Specify the memory module size * [ 2: 0] CS1/0 * [ 6: 4] CS3/2 * [10: 8] CS5/4 * [14:12] CS7/6 * 000 = 32Mbyte (Rows = 12 & Col = 8) * 001 = 64Mbyte (Rows = 12 & Col = 9) * 010 = 128Mbyte (Rows = 13 & Col = 9)|(Rows = 12 & Col = 10) * 011 = 256Mbyte (Rows = 13 & Col = 10)|(Rows = 12 & Col = 11) * 100 = 512Mbyte (Rows = 13 & Col = 11)|(Rows = 14 & Col = 10) * 101 = 1Gbyte (Rows = 14 & Col = 11)|(Rows = 13 & Col = 12) * 110 = 2Gbyte (Rows = 14 & Col = 12) * 111 = reserved * [ 3: 3] Reserved * [ 7: 7] Reserved * [11:11] Reserved * [31:15] */ PCI_ADDR(0, 0x18, 2, 0x80), 0xffff8888, 0x00000000, /* DRAM Timing Low Register * F2:0x88 * [ 2: 0] Tcl (Cas# Latency, Cas# to read-data-valid) * 000 = reserved * 001 = CL 2 * 010 = CL 3 * 011 = reserved * 100 = reserved * 101 = CL 2.5 * 110 = reserved * 111 = reserved * [ 3: 3] Reserved * [ 7: 4] Trc (Row Cycle Time, Ras#-active to Ras#-active/bank auto refresh) * 0000 = 7 bus clocks * 0001 = 8 bus clocks * ... * 1110 = 21 bus clocks * 1111 = 22 bus clocks * [11: 8] Trfc (Row refresh Cycle time, Auto-refresh-active to RAS#-active or RAS#auto-refresh) * 0000 = 9 bus clocks * 0010 = 10 bus clocks * .... * 1110 = 23 bus clocks * 1111 = 24 bus clocks * [14:12] Trcd (Ras#-active to Case#-read/write Delay) * 000 = reserved * 001 = reserved * 010 = 2 bus clocks * 011 = 3 bus clocks * 100 = 4 bus clocks * 101 = 5 bus clocks * 110 = 6 bus clocks * 111 = reserved * [15:15] Reserved * [18:16] Trrd (Ras# to Ras# Delay) * 000 = reserved * 001 = reserved * 010 = 2 bus clocks * 011 = 3 bus clocks * 100 = 4 bus clocks * 101 = reserved * 110 = reserved * 111 = reserved * [19:19] Reserved * [23:20] Tras (Minmum Ras# Active Time) * 0000 to 0100 = reserved * 0101 = 5 bus clocks * ... * 1111 = 15 bus clocks * [26:24] Trp (Row Precharge Time) * 000 = reserved * 001 = reserved * 010 = 2 bus clocks * 011 = 3 bus clocks * 100 = 4 bus clocks * 101 = 5 bus clocks * 110 = 6 bus clocks * 111 = reserved * [27:27] Reserved * [28:28] Twr (Write Recovery Time) * 0 = 2 bus clocks * 1 = 3 bus clocks * [31:29] Reserved */ PCI_ADDR(0, 0x18, 2, 0x88), 0xe8088008, 0x02522001 /* 0x03623125 */ , /* DRAM Timing High Register * F2:0x8C * [ 0: 0] Twtr (Write to Read Delay) * 0 = 1 bus Clocks * 1 = 2 bus Clocks * [ 3: 1] Reserved * [ 6: 4] Trwt (Read to Write Delay) * 000 = 1 bus clocks * 001 = 2 bus clocks * 010 = 3 bus clocks * 011 = 4 bus clocks * 100 = 5 bus clocks * 101 = 6 bus clocks * 110 = reserved * 111 = reserved * [ 7: 7] Reserved * [12: 8] Tref (Refresh Rate) * 00000 = 100Mhz 4K rows * 00001 = 133Mhz 4K rows * 00010 = 166Mhz 4K rows * 00011 = 200Mhz 4K rows * 01000 = 100Mhz 8K/16K rows * 01001 = 133Mhz 8K/16K rows * 01010 = 166Mhz 8K/16K rows * 01011 = 200Mhz 8K/16K rows * [19:13] Reserved * [22:20] Twcl (Write CAS Latency) * 000 = 1 Mem clock after CAS# (Unbuffered Dimms) * 001 = 2 Mem clocks after CAS# (Registered Dimms) * [31:23] Reserved */ PCI_ADDR(0, 0x18, 2, 0x8c), 0xff8fe08e, (0 << 20)|(0 << 8)|(0 << 4)|(0 << 0), /* DRAM Config Low Register * F2:0x90 * [ 0: 0] DLL Disable * 0 = Enabled * 1 = Disabled * [ 1: 1] D_DRV * 0 = Normal Drive * 1 = Weak Drive * [ 2: 2] QFC_EN * 0 = Disabled * 1 = Enabled * [ 3: 3] Disable DQS Hystersis (FIXME handle this one carefully) * 0 = Enable DQS input filter * 1 = Disable DQS input filtering * [ 7: 4] Reserved * [ 8: 8] DRAM_Init * 0 = Initialization done or not yet started. * 1 = Initiate DRAM intialization sequence * [ 9: 9] SO-Dimm Enable * 0 = Do nothing * 1 = SO-Dimms present * [10:10] DramEnable * 0 = DRAM not enabled * 1 = DRAM initialized and enabled * [11:11] Memory Clear Status * 0 = Memory Clear function has not completed * 1 = Memory Clear function has completed * [12:12] Exit Self-Refresh * 0 = Exit from self-refresh done or not yet started * 1 = DRAM exiting from self refresh * [13:13] Self-Refresh Status * 0 = Normal Operation * 1 = Self-refresh mode active * [15:14] Read/Write Queue Bypass Count * 00 = 2 * 01 = 4 * 10 = 8 * 11 = 16 * [16:16] 128-bit/64-Bit * 0 = 64bit Interface to DRAM * 1 = 128bit Interface to DRAM * [17:17] DIMM ECC Enable * 0 = Some DIMMs do not have ECC * 1 = ALL DIMMS have ECC bits * [18:18] UnBuffered DIMMs * 0 = Buffered DIMMS * 1 = Unbuffered DIMMS * [19:19] Enable 32-Byte Granularity * 0 = Optimize for 64byte bursts * 1 = Optimize for 32byte bursts * [20:20] DIMM 0 is x4 * [21:21] DIMM 1 is x4 * [22:22] DIMM 2 is x4 * [23:23] DIMM 3 is x4 * 0 = DIMM is not x4 * 1 = x4 DIMM present * [24:24] Disable DRAM Receivers * 0 = Receivers enabled * 1 = Receivers disabled * [27:25] Bypass Max * 000 = Arbiters chois is always respected * 001 = Oldest entry in DCQ can be bypassed 1 time * 010 = Oldest entry in DCQ can be bypassed 2 times * 011 = Oldest entry in DCQ can be bypassed 3 times * 100 = Oldest entry in DCQ can be bypassed 4 times * 101 = Oldest entry in DCQ can be bypassed 5 times * 110 = Oldest entry in DCQ can be bypassed 6 times * 111 = Oldest entry in DCQ can be bypassed 7 times * [31:28] Reserved */ PCI_ADDR(0, 0x18, 2, 0x90), 0xf0000000, (4 << 25)|(0 << 24)| (0 << 23)|(0 << 22)|(0 << 21)|(0 << 20)| (1 << 19)|(0 << 18)|(1 << 17)|(0 << 16)| (2 << 14)|(0 << 13)|(0 << 12)| (0 << 11)|(0 << 10)|(0 << 9)|(0 << 8)| (0 << 3) |(0 << 1) |(0 << 0), /* DRAM Config High Register * F2:0x94 * [ 0: 3] Maximum Asynchronous Latency * 0000 = 0 ns * ... * 1111 = 15 ns * [ 7: 4] Reserved * [11: 8] Read Preamble * 0000 = 2.0 ns * 0001 = 2.5 ns * 0010 = 3.0 ns * 0011 = 3.5 ns * 0100 = 4.0 ns * 0101 = 4.5 ns * 0110 = 5.0 ns * 0111 = 5.5 ns * 1000 = 6.0 ns * 1001 = 6.5 ns * 1010 = 7.0 ns * 1011 = 7.5 ns * 1100 = 8.0 ns * 1101 = 8.5 ns * 1110 = 9.0 ns * 1111 = 9.5 ns * [15:12] Reserved * [18:16] Idle Cycle Limit * 000 = 0 cycles * 001 = 4 cycles * 010 = 8 cycles * 011 = 16 cycles * 100 = 32 cycles * 101 = 64 cycles * 110 = 128 cycles * 111 = 256 cycles * [19:19] Dynamic Idle Cycle Center Enable * 0 = Use Idle Cycle Limit * 1 = Generate a dynamic Idle cycle limit * [22:20] DRAM MEMCLK Frequency * 000 = 100Mhz * 001 = reserved * 010 = 133Mhz * 011 = reserved * 100 = reserved * 101 = 166Mhz * 110 = reserved * 111 = reserved * [24:23] Reserved * [25:25] Memory Clock Ratio Valid (FIXME carefully enable memclk) * 0 = Disable MemClks * 1 = Enable MemClks * [26:26] Memory Clock 0 Enable * 0 = Disabled * 1 = Enabled * [27:27] Memory Clock 1 Enable * 0 = Disabled * 1 = Enabled * [28:28] Memory Clock 2 Enable * 0 = Disabled * 1 = Enabled * [29:29] Memory Clock 3 Enable * 0 = Disabled * 1 = Enabled * [31:30] Reserved */ PCI_ADDR(0, 0x18, 2, 0x94), 0xc180f0f0, (0 << 29)|(0 << 28)|(0 << 27)|(0 << 26)|(0 << 25)| (0 << 20)|(0 << 19)|(DCH_IDLE_LIMIT_16 << 16)|(0 << 8)|(0 << 0), /* DRAM Delay Line Register * F2:0x98 * Adjust the skew of the input DQS strobe relative to DATA * [15: 0] Reserved * [23:16] Delay Line Adjust * Adjusts the DLL derived PDL delay by one or more delay stages * in either the faster or slower direction. * [24:24} Adjust Slower * 0 = Do Nothing * 1 = Adj is used to increase the PDL delay * [25:25] Adjust Faster * 0 = Do Nothing * 1 = Adj is used to decrease the PDL delay * [31:26] Reserved */ PCI_ADDR(0, 0x18, 2, 0x98), 0xfc00ffff, 0x00000000, /* DRAM Scrub Control Register * F3:0x58 * [ 4: 0] DRAM Scrube Rate * [ 7: 5] reserved * [12: 8] L2 Scrub Rate * [15:13] reserved * [20:16] Dcache Scrub * [31:21] reserved * Scrub Rates * 00000 = Do not scrub * 00001 = 40.00 ns * 00010 = 80.00 ns * 00011 = 160.00 ns * 00100 = 320.00 ns * 00101 = 640.00 ns * 00110 = 1.28 us * 00111 = 2.56 us * 01000 = 5.12 us * 01001 = 10.20 us * 01011 = 41.00 us * 01100 = 81.90 us * 01101 = 163.80 us * 01110 = 327.70 us * 01111 = 655.40 us * 10000 = 1.31 ms * 10001 = 2.62 ms * 10010 = 5.24 ms * 10011 = 10.49 ms * 10100 = 20.97 ms * 10101 = 42.00 ms * 10110 = 84.00 ms * All Others = Reserved */ PCI_ADDR(0, 0x18, 3, 0x58), 0xffe0e0e0, 0x00000000, /* DRAM Scrub Address Low Register * F3:0x5C * [ 0: 0] DRAM Scrubber Redirect Enable * 0 = Do nothing * 1 = Scrubber Corrects errors found in normal operation * [ 5: 1] Reserved * [31: 6] DRAM Scrub Address 31-6 */ PCI_ADDR(0, 0x18, 3, 0x5C), 0x0000003e, 0x00000000, /* DRAM Scrub Address High Register * F3:0x60 * [ 7: 0] DRAM Scrubb Address 39-32 * [31: 8] Reserved */ PCI_ADDR(0, 0x18, 3, 0x60), 0xffffff00, 0x00000000, #if 0 //BY LYH add IOMMU 64M APERTURE PCI_ADDR(0, 0x18, 3, 0x94), 0xffff8000, 0x00000f70, PCI_ADDR(0, 0x18, 3, 0x90), 0xffffff80, 0x00000002, PCI_ADDR(0, 0x18, 3, 0x98), 0x0000000f, 0x00068300,
//BY LYH END #endif }; int i; int max; print_debug("setting up CPU"); print_debug_hex8(ctrl->node_id); print_debug(" northbridge registers\r\n"); max = sizeof(register_values)/sizeof(register_values[0]); for(i = 0; i < max; i += 3) { device_t dev; unsigned where; unsigned long reg; #if 0 print_debug_hex32(register_values[i]); print_debug(" <-"); print_debug_hex32(register_values[i+2]); print_debug("\r\n"); #endif dev = (register_values[i] & ~0xff) - PCI_DEV(0, 0x18, 0) + ctrl->f0; where = register_values[i] & 0xff; reg = pci_read_config32(dev, where); reg &= register_values[i+1]; reg |= register_values[i+2]; pci_write_config32(dev, where, reg); #if 0
reg = pci_read_config32(register_values[i]); reg &= register_values[i+1]; reg |= register_values[i+2]; pci_write_config32(register_values[i], reg); #endif } print_debug("done.\r\n"); }
static int is_dual_channel(const struct mem_controller *ctrl) { uint32_t dcl; dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); return dcl & DCL_128BitEn; }
static int is_opteron(const struct mem_controller *ctrl) { /* Test to see if I am an Opteron. * FIXME Testing dual channel capability is correct for now * but a beter test is probably required. */ #warning "FIXME implement a better test for opterons" uint32_t nbcap; nbcap = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP); return !!(nbcap & NBCAP_128Bit); }
static int is_registered(const struct mem_controller *ctrl) { /* Test to see if we are dealing with registered SDRAM. * If we are not registered we are unbuffered. * This function must be called after spd_handle_unbuffered_dimms. */ uint32_t dcl; dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); return !(dcl & DCL_UnBufDimm); }
struct dimm_size { unsigned long side1; unsigned long side2; };
static struct dimm_size spd_get_dimm_size(unsigned device) { /* Calculate the log base 2 size of a DIMM in bits */ struct dimm_size sz; int value, low; sz.side1 = 0; sz.side2 = 0;
/* Note it might be easier to use byte 31 here, it has the DIMM size as * a multiple of 4MB. The way we do it now we can size both * sides of an assymetric dimm. */ value = spd_read_byte(device, 3); /* rows */ if (value < 0) goto out; sz.side1 += value & 0xf;
value = spd_read_byte(device, 4); /* columns */ if (value < 0) goto out; sz.side1 += value & 0xf;
value = spd_read_byte(device, 17); /* banks */ if (value < 0) goto out; sz.side1 += log2(value & 0xff);
/* Get the module data width and convert it to a power of two */ value = spd_read_byte(device, 7); /* (high byte) */ if (value < 0) goto out; value &= 0xff; value <<= 8; low = spd_read_byte(device, 6); /* (low byte) */ if (low < 0) goto out; value = value | (low & 0xff); sz.side1 += log2(value);
/* side 2 */ value = spd_read_byte(device, 5); /* number of physical banks */ if (value <= 1) goto out;
/* Start with the symmetrical case */ sz.side2 = sz.side1;
value = spd_read_byte(device, 3); /* rows */ if (value < 0) goto out; if ((value & 0xf0) == 0) goto out; /* If symmetrical we are done */ sz.side2 -= (value & 0x0f); /* Subtract out rows on side 1 */ sz.side2 += ((value >> 4) & 0x0f); /* Add in rows on side 2 */
value = spd_read_byte(device, 4); /* columns */ if (value < 0) goto out; sz.side2 -= (value & 0x0f); /* Subtract out columns on side 1 */ sz.side2 += ((value >> 4) & 0x0f); /* Add in columsn on side 2 */
out: return sz; }
static void set_dimm_size(const struct mem_controller *ctrl, struct dimm_size sz, unsigned index) { uint32_t base0, base1, map; uint32_t dch;
#if 0 print_debug("set_dimm_size: ("); print_debug_hex32(sz.side1); print_debug_char(','); print_debug_hex32(sz.side2); print_debug_char(','); print_debug_hex32(index); print_debug(")\r\n"); #endif if (sz.side1 != sz.side2) { sz.side2 = 0; } map = pci_read_config32(ctrl->f2, DRAM_BANK_ADDR_MAP); map &= ~(0xf << (index + 4));
/* For each base register. * Place the dimm size in 32 MB quantities in the bits 31 - 21. * The initialize dimm size is in bits. * Set the base enable bit0. */ base0 = base1 = 0;
/* Make certain side1 of the dimm is at least 32MB */ if (sz.side1 >= (25 +3)) { map |= (sz.side1 - (25 + 3)) << (index *4); base0 = (1 << ((sz.side1 - (25 + 3)) + 21)) | 1; } /* Make certain side2 of the dimm is at least 32MB */ if (sz.side2 >= (25 + 3)) { base1 = (1 << ((sz.side2 - (25 + 3)) + 21)) | 1; }
/* Double the size if we are using dual channel memory */ if (is_dual_channel(ctrl)) { base0 = (base0 << 1) | (base0 & 1); base1 = (base1 << 1) | (base1 & 1); }
/* Clear the reserved bits */ base0 &= ~0x001ffffe; base1 &= ~0x001ffffe;
/* Set the appropriate DIMM base address register */ pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1)+0)<<2), base0); pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1)+1)<<2), base1); pci_write_config32(ctrl->f2, DRAM_BANK_ADDR_MAP, map); /* Enable the memory clocks for this DIMM */ if (base0) { dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH); dch |= DCH_MEMCLK_EN0 << index; pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch); } }
static void spd_set_ram_size(const struct mem_controller *ctrl) { int i; for(i = 0; (i < 4) && (ctrl->channel0[i]); i++) { struct dimm_size sz; sz = spd_get_dimm_size(ctrl->channel0[i]); set_dimm_size(ctrl, sz, i); } }
static void route_dram_accesses(const struct mem_controller *ctrl, unsigned long base_k, unsigned long limit_k) { /* Route the addresses to the controller node */ unsigned node_id; unsigned limit; unsigned base; unsigned index; unsigned limit_reg, base_reg; device_t device;
node_id = ctrl->node_id; index = (node_id << 3); limit = (limit_k << 2); limit &= 0xffff0000; limit -= 0x00010000; limit |= ( 0 << 8) | (node_id << 0); base = (base_k << 2); base &= 0xffff0000; base |= (0 << 8) | (1<<1) | (1<<0);
limit_reg = 0x44 + index; base_reg = 0x40 + index; for(device = PCI_DEV(0, 0x18, 1); device <= PCI_DEV(0, 0x1f, 1); device += PCI_DEV(0, 1, 0)) { pci_write_config32(device, limit_reg, limit); pci_write_config32(device, base_reg, base); } }
static void set_top_mem(unsigned tom_k) { /* Error if I don't have memory */ if (!tom_k) { die("No memory"); }
#if 1 /* Report the amount of memory. */ print_debug("RAM: 0x"); print_debug_hex32(tom_k); print_debug(" KB\r\n"); #endif
/* Now set top of memory */ msr_t msr; msr.lo = (tom_k & 0x003fffff) << 10; msr.hi = (tom_k & 0xffc00000) >> 22; wrmsr(TOP_MEM2, msr);
/* Leave a 64M hole between TOP_MEM and TOP_MEM2 * so I can see my rom chip and other I/O devices. */ if (tom_k >= 0x003f0000) { tom_k = 0x3f0000; } msr.lo = (tom_k & 0x003fffff) << 10; msr.hi = (tom_k & 0xffc00000) >> 22; wrmsr(TOP_MEM, msr); }
static void order_dimms(const struct mem_controller *ctrl) { unsigned long tom, tom_k, base_k; unsigned node_id;
/* Compute the memory base address address */ base_k = 0; /* Remember which registers we have used in the high 8 bits of tom */ tom = base_k >> 15; for(;;) { /* Find the largest remaining canidate */ unsigned index, canidate; uint32_t csbase, csmask; unsigned size; csbase = 0; canidate = 0; for(index = 0; index < 8; index++) { uint32_t value; value = pci_read_config32(ctrl->f2, DRAM_CSBASE + (index << 2));
/* Is it enabled? */ if (!(value & 1)) { continue; } /* Is it greater? */ if (value <= csbase) { continue; } /* Has it already been selected */ if (tom & (1 << (index + 24))) { continue; } /* I have a new canidate */ csbase = value; canidate = index; } /* See if I have found a new canidate */ if (csbase == 0) { break; }
/* Remember the dimm size */ size = csbase >> 21;
/* Remember I have used this register */ tom |= (1 << (canidate + 24));
/* Recompute the cs base register value */ csbase = (tom << 21) | 1;
/* Increment the top of memory */ tom += size;
/* Compute the memory mask */ csmask = ((size -1) << 21); csmask |= 0xfe00; /* For now don't optimize */ #warning "Don't forget to optimize the DIMM size"
/* Write the new base register */ pci_write_config32(ctrl->f2, DRAM_CSBASE + (canidate << 2), csbase); /* Write the new mask register */ pci_write_config32(ctrl->f2, DRAM_CSMASK + (canidate << 2), csmask); } tom_k = (tom & ~0xff000000) << 15;
/* Compute the memory base address */ base_k = 0; for(node_id = 0; node_id < ctrl->node_id; node_id++) { uint32_t limit, base; unsigned index; index = node_id << 3; base = pci_read_config32(ctrl->f1, 0x40 + index); /* Only look at the limit if the base is enabled */ if ((base & 3) == 3) { limit = pci_read_config32(ctrl->f1, 0x44 + index); base_k = ((limit + 0x00010000) & 0xffff0000) >> 2; } } tom_k += base_k; #if 0 print_debug("tom: "); print_debug_hex32(tom); print_debug(" base_k: "); print_debug_hex32(base_k); print_debug(" tom_k: "); print_debug_hex32(tom_k); print_debug("\r\n"); #endif route_dram_accesses(ctrl, base_k, tom_k); set_top_mem(tom_k); }
static void disable_dimm(const struct mem_controller *ctrl, unsigned index) { print_debug("disabling dimm"); print_debug_hex8(index); print_debug("\r\n"); pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1)+0)<<2), 0); pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1)+1)<<2), 0); }
static void spd_handle_unbuffered_dimms(const struct mem_controller *ctrl) { int i; int registered; int unbuffered; uint32_t dcl; unbuffered = 0; registered = 0; for(i = 0; (i < 4) && (ctrl->channel0[i]); i++) { int value; value = spd_read_byte(ctrl->channel0[i], 21); if (value < 0) { disable_dimm(ctrl, i); continue; } /* Registered dimm ? */ if (value & (1 << 1)) { registered = 1; } /* Otherwise it must be an unbuffered dimm */ else { unbuffered = 1; } } if (unbuffered && registered) { die("Mixed buffered and registered dimms not supported"); } if (unbuffered && is_opteron(ctrl)) { die("Unbuffered Dimms not supported on Opteron"); }
dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); dcl &= ~DCL_UnBufDimm; if (unbuffered) { dcl |= DCL_UnBufDimm; } pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl); #if 0 if (is_registered(ctrl)) { print_debug("Registered\r\n"); } else { print_debug("Unbuffered\r\n"); } #endif }
static void spd_enable_2channels(const struct mem_controller *ctrl) { int i; uint32_t nbcap; /* SPD addresses to verify are identical */ #warning "FINISHME review and see if these are the bytes I need" /* FINISHME review and see if these are the bytes I need */ static const unsigned addresses[] = { 2, /* Type should be DDR SDRAM */ 3, /* *Row addresses */ 4, /* *Column addresses */ 5, /* *Physical Banks */ 6, /* *Module Data Width low */ 7, /* *Module Data Width high */ 9, /* *Cycle time at highest CAS Latency CL=X */ 11, /* *SDRAM Type */ 13, /* *SDRAM Width */ 17, /* *Logical Banks */ 18, /* *Supported CAS Latencies */ 21, /* *SDRAM Module Attributes */ 23, /* *Cycle time at CAS Latnecy (CLX - 0.5) */ 26, /* *Cycle time at CAS Latnecy (CLX - 1.0) */ 27, /* *tRP Row precharge time */ 28, /* *Minimum Row Active to Row Active Delay (tRRD) */ 29, /* *tRCD RAS to CAS */ 30, /* *tRAS Activate to Precharge */ 41, /* *Minimum Active to Active/Auto Refresh Time(Trc) */ 42, /* *Minimum Auto Refresh Command Time(Trfc) */ }; nbcap = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP); if (!(nbcap & NBCAP_128Bit)) { return; } for(i = 0; (i < 4) && (ctrl->channel0[i]); i++) { unsigned device0, device1; int value0, value1; int j; device0 = ctrl->channel0[i]; device1 = ctrl->channel1[i]; if (!device1) return; for(j = 0; j < sizeof(addresses)/sizeof(addresses[0]); j++) { unsigned addr; addr = addresses[j]; value0 = spd_read_byte(device0, addr); if (value0 < 0) { break; } value1 = spd_read_byte(device1, addr); if (value1 < 0) { return; } if (value0 != value1) { return; } } } print_debug("Enabling dual channel memory\r\n"); uint32_t dcl; dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); dcl &= ~DCL_32ByteEn; dcl |= DCL_128BitEn; pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl); }
struct mem_param { uint8_t cycle_time; uint8_t divisor; /* In 1/2 ns increments */ uint8_t tRC; uint8_t tRFC; uint32_t dch_memclk; uint16_t dch_tref4k, dch_tref8k; uint8_t dtl_twr; char name[9]; };
static const struct mem_param *get_mem_param(unsigned min_cycle_time) { static const struct mem_param speed[] = { { .name = "100Mhz\r\n", .cycle_time = 0xa0, .divisor = (10 <<1), .tRC = 0x46, .tRFC = 0x50, .dch_memclk = DCH_MEMCLK_100MHZ << DCH_MEMCLK_SHIFT, .dch_tref4k = DTH_TREF_100MHZ_4K, .dch_tref8k = DTH_TREF_100MHZ_8K, .dtl_twr = 2, }, { .name = "133Mhz\r\n", .cycle_time = 0x75, .divisor = (7<<1)+1, .tRC = 0x41, .tRFC = 0x4B, .dch_memclk = DCH_MEMCLK_133MHZ << DCH_MEMCLK_SHIFT, .dch_tref4k = DTH_TREF_133MHZ_4K, .dch_tref8k = DTH_TREF_133MHZ_8K, .dtl_twr = 2, }, { .name = "166Mhz\r\n", .cycle_time = 0x60, .divisor = (6<<1), .tRC = 0x3C, .tRFC = 0x48, .dch_memclk = DCH_MEMCLK_166MHZ << DCH_MEMCLK_SHIFT, .dch_tref4k = DTH_TREF_166MHZ_4K, .dch_tref8k = DTH_TREF_166MHZ_8K, .dtl_twr = 3, }, { .name = "200Mhz\r\n", .cycle_time = 0x50, .divisor = (5<<1), .tRC = 0x37, .tRFC = 0x46, .dch_memclk = DCH_MEMCLK_200MHZ << DCH_MEMCLK_SHIFT, .dch_tref4k = DTH_TREF_200MHZ_4K, .dch_tref8k = DTH_TREF_200MHZ_8K, .dtl_twr = 3, }, { .cycle_time = 0x00, }, }; const struct mem_param *param; for(param = &speed[0]; param->cycle_time ; param++) { if (min_cycle_time > (param+1)->cycle_time) { break; } } if (!param->cycle_time) { die("min_cycle_time to low"); } #if 1 print_debug(param->name); #endif return param; }
static const struct mem_param *spd_set_memclk(const struct mem_controller *ctrl) { /* Compute the minimum cycle time for these dimms */ const struct mem_param *param; unsigned min_cycle_time, min_latency; int i; uint32_t value;
static const int latency_indicies[] = { 26, 23, 9 }; static const unsigned char min_cycle_times[] = { [NBCAP_MEMCLK_200MHZ] = 0x50, /* 5ns */ [NBCAP_MEMCLK_166MHZ] = 0x60, /* 6ns */ [NBCAP_MEMCLK_133MHZ] = 0x75, /* 7.5ns */ [NBCAP_MEMCLK_100MHZ] = 0xa0, /* 10ns */ };
value = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP); min_cycle_time = min_cycle_times[(value >> NBCAP_MEMCLK_SHIFT) & NBCAP_MEMCLK_MASK]; min_latency = 2;
#if 0 print_debug("min_cycle_time: "); print_debug_hex8(min_cycle_time); print_debug(" min_latency: "); print_debug_hex8(min_latency); print_debug("\r\n"); #endif
/* Compute the least latency with the fastest clock supported * by both the memory controller and the dimms. */ for(i = 0; (i < 4) && (ctrl->channel0[i]); i++) { int new_cycle_time, new_latency; int index; int latencies; int latency;
/* First find the supported CAS latencies * Byte 18 for DDR SDRAM is interpreted: * bit 0 == CAS Latency = 1.0 * bit 1 == CAS Latency = 1.5 * bit 2 == CAS Latency = 2.0 * bit 3 == CAS Latency = 2.5 * bit 4 == CAS Latency = 3.0 * bit 5 == CAS Latency = 3.5 * bit 6 == TBD * bit 7 == TBD */ new_cycle_time = 0xa0; new_latency = 5;
latencies = spd_read_byte(ctrl->channel0[i], 18); if (latencies <= 0) continue;
/* Compute the lowest cas latency supported */ latency = log2(latencies) -2;
/* Loop through and find a fast clock with a low latency */ for(index = 0; index < 3; index++, latency++) { int value; if ((latency < 2) || (latency > 4) || (!(latencies & (1 << latency)))) { continue; } value = spd_read_byte(ctrl->channel0[i], latency_indicies[index]); if (value < 0) { continue; }
/* Only increase the latency if we decreas the clock */ if ((value >= min_cycle_time) && (value < new_cycle_time)) { new_cycle_time = value; new_latency = latency; } } if (new_latency > 4){ continue; } /* Does min_latency need to be increased? */ if (new_cycle_time > min_cycle_time) { min_cycle_time = new_cycle_time; } /* Does min_cycle_time need to be increased? */ if (new_latency > min_latency) { min_latency = new_latency; } #if 0 print_debug("i: "); print_debug_hex8(i); print_debug(" min_cycle_time: "); print_debug_hex8(min_cycle_time); print_debug(" min_latency: "); print_debug_hex8(min_latency); print_debug("\r\n"); #endif } /* Make a second pass through the dimms and disable * any that cannot support the selected memclk and cas latency. */ for(i = 0; (i < 4) && (ctrl->channel0[i]); i++) { int latencies; int latency; int index; int value; int dimm; latencies = spd_read_byte(ctrl->channel0[i], 18); if (latencies <= 0) { goto dimm_err; }
/* Compute the lowest cas latency supported */ latency = log2(latencies) -2;
/* Walk through searching for the selected latency */ for(index = 0; index < 3; index++, latency++) { if (!(latencies & (1 << latency))) { continue; } if (latency == min_latency) break; } /* If I can't find the latency or my index is bad error */ if ((latency != min_latency) || (index >= 3)) { goto dimm_err; } /* Read the min_cycle_time for this latency */ value = spd_read_byte(ctrl->channel0[i], latency_indicies[index]); /* All is good if the selected clock speed * is what I need or slower. */ if (value <= min_cycle_time) { continue; } /* Otherwise I have an error, disable the dimm */ dimm_err: disable_dimm(ctrl, i); } #if 0 print_debug("min_cycle_time: "); print_debug_hex8(min_cycle_time); print_debug(" min_latency: "); print_debug_hex8(min_latency); print_debug("\r\n"); #endif /* Now that I know the minimum cycle time lookup the memory parameters */ param = get_mem_param(min_cycle_time);
/* Update DRAM Config High with our selected memory speed */ value = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH); value &= ~(DCH_MEMCLK_MASK << DCH_MEMCLK_SHIFT); value |= param->dch_memclk; pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, value);
static const unsigned latencies[] = { DTL_CL_2, DTL_CL_2_5, DTL_CL_3 }; /* Update DRAM Timing Low with our selected cas latency */ value = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); value &= ~(DTL_TCL_MASK << DTL_TCL_SHIFT); value |= latencies[min_latency - 2] << DTL_TCL_SHIFT; pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, value); return param; }
static int update_dimm_Trc(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 41); if (value < 0) return -1; if ((value == 0) || (value == 0xff)) { value = param->tRC; } clocks = ((value << 1) + param->divisor - 1)/param->divisor; if (clocks < DTL_TRC_MIN) { clocks = DTL_TRC_MIN; } if (clocks > DTL_TRC_MAX) { return -1; }
dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRC_SHIFT) & DTL_TRC_MASK) + DTL_TRC_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRC_MASK << DTL_TRC_SHIFT); dtl |= ((clocks - DTL_TRC_BASE) << DTL_TRC_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static int update_dimm_Trfc(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 42); if (value < 0) return -1; if ((value == 0) || (value == 0xff)) { value = param->tRFC; } clocks = ((value << 1) + param->divisor - 1)/param->divisor; if (clocks < DTL_TRFC_MIN) { clocks = DTL_TRFC_MIN; } if (clocks > DTL_TRFC_MAX) { return -1; } dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRFC_SHIFT) & DTL_TRFC_MASK) + DTL_TRFC_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRFC_MASK << DTL_TRFC_SHIFT); dtl |= ((clocks - DTL_TRFC_BASE) << DTL_TRFC_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static int update_dimm_Trcd(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 29); if (value < 0) return -1; #if 0 clocks = (value + (param->divisor << 1) -1)/(param->divisor << 1); #else clocks = (value + ((param->divisor & 0xff) << 1) -1)/((param->divisor & 0xff) << 1); #endif if (clocks < DTL_TRCD_MIN) { clocks = DTL_TRCD_MIN; } if (clocks > DTL_TRCD_MAX) { return -1; } dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRCD_SHIFT) & DTL_TRCD_MASK) + DTL_TRCD_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRCD_MASK << DTL_TRCD_SHIFT); dtl |= ((clocks - DTL_TRCD_BASE) << DTL_TRCD_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static int update_dimm_Trrd(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 28); if (value < 0) return -1; clocks = (value + ((param->divisor & 0xff) << 1) -1)/((param->divisor & 0xff) << 1); if (clocks < DTL_TRRD_MIN) { clocks = DTL_TRRD_MIN; } if (clocks > DTL_TRRD_MAX) { return -1; } dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRRD_SHIFT) & DTL_TRRD_MASK) + DTL_TRRD_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRRD_MASK << DTL_TRRD_SHIFT); dtl |= ((clocks - DTL_TRRD_BASE) << DTL_TRRD_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static int update_dimm_Tras(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 30); if (value < 0) return -1; clocks = ((value << 1) + param->divisor - 1)/param->divisor; if (clocks < DTL_TRAS_MIN) { clocks = DTL_TRAS_MIN; } if (clocks > DTL_TRAS_MAX) { return -1; } dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRAS_SHIFT) & DTL_TRAS_MASK) + DTL_TRAS_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRAS_MASK << DTL_TRAS_SHIFT); dtl |= ((clocks - DTL_TRAS_BASE) << DTL_TRAS_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static int update_dimm_Trp(const struct mem_controller *ctrl, const struct mem_param *param, int i) { unsigned clocks, old_clocks; uint32_t dtl; int value; value = spd_read_byte(ctrl->channel0[i], 27); if (value < 0) return -1; #if 0 clocks = (value + (param->divisor << 1) - 1)/(param->divisor << 1); #else clocks = (value + ((param->divisor & 0xff) << 1) - 1)/((param->divisor & 0xff) << 1); #endif #if 0 print_debug("Trp: "); print_debug_hex8(clocks); print_debug(" spd value: "); print_debug_hex8(value); print_debug(" divisor: "); print_debug_hex8(param->divisor); print_debug("\r\n"); #endif if (clocks < DTL_TRP_MIN) { clocks = DTL_TRP_MIN; } if (clocks > DTL_TRP_MAX) { return -1; } dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); old_clocks = ((dtl >> DTL_TRP_SHIFT) & DTL_TRP_MASK) + DTL_TRP_BASE; if (old_clocks > clocks) { clocks = old_clocks; } dtl &= ~(DTL_TRP_MASK << DTL_TRP_SHIFT); dtl |= ((clocks - DTL_TRP_BASE) << DTL_TRP_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); return 0; }
static void set_Twr(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dtl; dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); dtl &= ~(DTL_TWR_MASK << DTL_TWR_SHIFT); dtl |= (param->dtl_twr - DTL_TWR_BASE) << DTL_TWR_SHIFT; pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl); }
static void init_Tref(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dth; dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH); dth &= ~(DTH_TREF_MASK << DTH_TREF_SHIFT); dth |= (param->dch_tref4k << DTH_TREF_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth); }
static int update_dimm_Tref(const struct mem_controller *ctrl, const struct mem_param *param, int i) { uint32_t dth; int value; unsigned tref, old_tref; value = spd_read_byte(ctrl->channel0[i], 3); if (value < 0) return -1; value &= 0xf;
tref = param->dch_tref8k; if (value == 12) { tref = param->dch_tref4k; }
dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH); old_tref = (dth >> DTH_TREF_SHIFT) & DTH_TREF_MASK; if ((value == 12) && (old_tref == param->dch_tref4k)) { tref = param->dch_tref4k; } else { tref = param->dch_tref8k; } dth &= ~(DTH_TREF_MASK << DTH_TREF_SHIFT); dth |= (tref << DTH_TREF_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth); return 0; }
static int update_dimm_x4(const struct mem_controller *ctrl, const struct mem_param *param, int i) { uint32_t dcl; int value; int dimm; value = spd_read_byte(ctrl->channel0[i], 13); if (value < 0) { return -1; } dimm = i; dimm += DCL_x4DIMM_SHIFT; dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); dcl &= ~(1 << dimm); if (value == 4) { dcl |= (1 << dimm); } pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl); return 0; }
static int update_dimm_ecc(const struct mem_controller *ctrl, const struct mem_param *param, int i) { uint32_t dcl; int value; value = spd_read_byte(ctrl->channel0[i], 11); if (value < 0) { return -1; } if (value != 2) { dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW); dcl &= ~DCL_DimmEccEn; pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl); } return 0; }
static int count_dimms(const struct mem_controller *ctrl) { int dimms; unsigned index; dimms = 0; for(index = 0; index < 8; index += 2) { uint32_t csbase; csbase = pci_read_config32(ctrl->f2, (DRAM_CSBASE + index << 2)); if (csbase & 1) { dimms += 1; } } return dimms; }
static void set_Twtr(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dth; unsigned clocks; clocks = 1; /* AMD says hard code this */ dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH); dth &= ~(DTH_TWTR_MASK << DTH_TWTR_SHIFT); dth |= ((clocks - DTH_TWTR_BASE) << DTH_TWTR_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth); }
static void set_Trwt(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dth, dtl; unsigned divisor; unsigned latency; unsigned clocks;
clocks = 0; dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); latency = (dtl >> DTL_TCL_SHIFT) & DTL_TCL_MASK; divisor = param->divisor;
if (is_opteron(ctrl)) { if (latency == DTL_CL_2) { if (divisor == ((6 << 0) + 0)) { /* 166Mhz */ clocks = 3; } else if (divisor > ((6 << 0)+0)) { /* 100Mhz && 133Mhz */ clocks = 2; } } else if (latency == DTL_CL_2_5) { clocks = 3; } else if (latency == DTL_CL_3) { if (divisor == ((6 << 0)+0)) { /* 166Mhz */ clocks = 4; } else if (divisor > ((6 << 0)+0)) { /* 100Mhz && 133Mhz */ clocks = 3; } } } else /* Athlon64 */ { if (is_registered(ctrl)) { if (latency == DTL_CL_2) { clocks = 2; } else if (latency == DTL_CL_2_5) { clocks = 3; } else if (latency == DTL_CL_3) { clocks = 3; } } else /* Unbuffered */{ if (latency == DTL_CL_2) { clocks = 3; } else if (latency == DTL_CL_2_5) { clocks = 4; } else if (latency == DTL_CL_3) { clocks = 4; } } } if ((clocks < DTH_TRWT_MIN) || (clocks > DTH_TRWT_MAX)) { die("Unknown Trwt"); } dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH); dth &= ~(DTH_TRWT_MASK << DTH_TRWT_SHIFT); dth |= ((clocks - DTH_TRWT_BASE) << DTH_TRWT_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth); return; }
static void set_Twcl(const struct mem_controller *ctrl, const struct mem_param *param) { /* Memory Clocks after CAS# */ uint32_t dth; unsigned clocks; if (is_registered(ctrl)) { clocks = 2; } else { clocks = 1; } dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH); dth &= ~(DTH_TWCL_MASK << DTH_TWCL_SHIFT); dth |= ((clocks - DTH_TWCL_BASE) << DTH_TWCL_SHIFT); pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth); }
static void set_read_preamble(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dch; unsigned divisor; unsigned rdpreamble; divisor = param->divisor; dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH); dch &= ~(DCH_RDPREAMBLE_MASK << DCH_RDPREAMBLE_SHIFT); rdpreamble = 0; if (is_registered(ctrl)) { if (divisor == ((10 << 1)+0)) { /* 100Mhz, 9ns */ rdpreamble = ((9 << 1)+ 0); } else if (divisor == ((7 << 1)+1)) { /* 133Mhz, 8ns */ rdpreamble = ((8 << 1)+0); } else if (divisor == ((6 << 1)+0)) { /* 166Mhz, 7.5ns */ rdpreamble = ((7 << 1)+1); } } else { int slots; int i; slots = 0; for(i = 0; i < 4; i++) { if (ctrl->channel0[i]) { slots += 1; } } if (divisor == ((10 << 1)+0)) { /* 100Mhz */ if (slots <= 2) { /* 9ns */ rdpreamble = ((9 << 1)+0); } else { /* 14ns */ rdpreamble = ((14 << 1)+0); } } else if (divisor == ((7 << 1)+1)) { /* 133Mhz */ if (slots <= 2) { /* 7ns */ rdpreamble = ((7 << 1)+0); } else { /* 11 ns */ rdpreamble = ((11 << 1)+0); } } else if (divisor == ((6 << 1)+0)) { /* 166Mhz */ if (slots <= 2) { /* 6ns */ rdpreamble = ((7 << 1)+0); } else { /* 9ns */ rdpreamble = ((9 << 1)+0); } } else if (divisor == ((5 << 1)+0)) { /* 200Mhz */ if (slots <= 2) { /* 5ns */ rdpreamble = ((5 << 1)+0); } else { /* 7ns */ rdpreamble = ((7 << 1)+0); } } } if ((rdpreamble < DCH_RDPREAMBLE_MIN) || (rdpreamble > DCH_RDPREAMBLE_MAX)) { die("Unknown rdpreamble"); } dch |= (rdpreamble - DCH_RDPREAMBLE_BASE) << DCH_RDPREAMBLE_SHIFT; pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch); }
static void set_max_async_latency(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dch; int i; unsigned async_lat; int dimms;
dimms = count_dimms(ctrl);
dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH); dch &= ~(DCH_ASYNC_LAT_MASK << DCH_ASYNC_LAT_SHIFT); async_lat = 0; if (is_registered(ctrl)) { if (dimms == 4) { /* 9ns */ async_lat = 9; } else { /* 8ns */ async_lat = 8; } } else { if (dimms > 3) { die("Too many unbuffered dimms"); } else if (dimms == 3) { /* 7ns */ async_lat = 7; } else { /* 6ns */ async_lat = 6; } } dch |= ((async_lat - DCH_ASYNC_LAT_BASE) << DCH_ASYNC_LAT_SHIFT); pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch); }
static void set_idle_cycle_limit(const struct mem_controller *ctrl, const struct mem_param *param) { uint32_t dch; /* AMD says to Hardcode this */ dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH); dch &= ~(DCH_IDLE_LIMIT_MASK << DCH_IDLE_LIMIT_SHIFT); dch |= DCH_IDLE_LIMIT_16 << DCH_IDLE_LIMIT_SHIFT; dch |= DCH_DYN_IDLE_CTR_EN; pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch); }
static void spd_set_dram_timing(const struct mem_controller *ctrl, const struct mem_param *param) { int dimms; int i; init_Tref(ctrl, param); for(i = 0; (i < 4) && ctrl->channel0[i]; i++) { int rc; /* DRAM Timing Low Register */ if (update_dimm_Trc (ctrl, param, i) < 0) goto dimm_err; if (update_dimm_Trfc(ctrl, param, i) < 0) goto dimm_err; if (update_dimm_Trcd(ctrl, param, i) < 0) goto dimm_err; if (update_dimm_Trrd(ctrl, param, i) < 0) goto dimm_err; if (update_dimm_Tras(ctrl, param, i) < 0) goto dimm_err; if (update_dimm_Trp (ctrl, param, i) < 0) goto dimm_err;
/* DRAM Timing High Register */ if (update_dimm_Tref(ctrl, param, i) < 0) goto dimm_err;
/* DRAM Config Low */ if (update_dimm_x4 (ctrl, param, i) < 0) goto dimm_err; if (update_dimm_ecc(ctrl, param, i) < 0) goto dimm_err; continue; dimm_err: disable_dimm(ctrl, i); } /* DRAM Timing Low Register */ set_Twr(ctrl, param);
/* DRAM Timing High Register */ set_Twtr(ctrl, param); set_Trwt(ctrl, param); set_Twcl(ctrl, param);
/* DRAM Config High */ set_read_preamble(ctrl, param); set_max_async_latency(ctrl, param); set_idle_cycle_limit(ctrl, param); }
static void sdram_set_spd_registers(const struct mem_controller *ctrl) { const struct mem_param *param; spd_enable_2channels(ctrl); spd_set_ram_size(ctrl); spd_handle_unbuffered_dimms(ctrl); param = spd_set_memclk(ctrl); spd_set_dram_timing(ctrl, param); order_dimms(ctrl); }
#define TIMEOUT_LOOPS 300000 static void sdram_enable(int controllers, const struct mem_controller *ctrl) { int i;
/* Before enabling memory start the memory clocks */ for(i = 0; i < controllers; i++) { uint32_t dch; dch = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_HIGH); dch |= DCH_MEMCLK_VALID; pci_write_config32(ctrl[i].f2, DRAM_CONFIG_HIGH, dch); }
/* And if necessary toggle the the reset on the dimms by hand */ memreset(controllers, ctrl);
for(i = 0; i < controllers; i++) { uint32_t dcl; /* Toggle DisDqsHys to get it working */ dcl = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_LOW); #if 0 print_debug("dcl: "); print_debug_hex32(dcl); print_debug("\r\n"); #endif if (dcl & DCL_DimmEccEn) { uint32_t mnc; print_debug("ECC enabled\r\n"); mnc = pci_read_config32(ctrl[i].f3, MCA_NB_CONFIG); mnc |= MNC_ECC_EN; if (dcl & DCL_128BitEn) { mnc |= MNC_CHIPKILL_EN; } pci_write_config32(ctrl[i].f3, MCA_NB_CONFIG, mnc); } dcl |= DCL_DisDqsHys; pci_write_config32(ctrl[i].f2, DRAM_CONFIG_LOW, dcl); dcl &= ~DCL_DisDqsHys; dcl &= ~DCL_DLL_Disable; dcl &= ~DCL_D_DRV; dcl &= ~DCL_QFC_EN; dcl |= DCL_DramInit; pci_write_config32(ctrl[i].f2, DRAM_CONFIG_LOW, dcl);
} for(i = 0; i < controllers; i++) { uint32_t dcl; print_debug("Initializing memory: "); int loops = 0; do { dcl = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_LOW); loops += 1; if ((loops & 1023) == 0) { print_debug("."); } } while(((dcl & DCL_DramInit) != 0) && (loops < TIMEOUT_LOOPS)); if (loops >= TIMEOUT_LOOPS) { print_debug(" failed\r\n"); } else { print_debug(" done\r\n"); } if (dcl & DCL_DimmEccEn) { print_debug("Clearing memory: "); if (is_cpu_pre_c0()) { /* Kick the memory scrubber into high gear and scrub everything */ uint32_t base, last_scrub_k, scrub_k; /* First make certain the scrubber is disabled */ pci_write_config32(ctrl[i].f3, SCRUB_CONTROL, (SCRUB_NONE << 16) | (SCRUB_NONE << 8) | (SCRUB_NONE << 0)); /* Set the scrub base address */ base = pci_read_config32(ctrl[i].f1, 0x40 + (ctrl[i].node_id << 3)); base &= 0xffff0000; pci_write_config32(ctrl[i].f3, SCRUB_ADDR_LOW, base << 8); pci_write_config32(ctrl[i].f3, SCRUB_ADDR_HIGH, base >> 24); /* Enable DRAM scrubbing at full speed */ pci_write_config32(ctrl[i].f3, SCRUB_CONTROL, (SCRUB_84ms << 16) | (SCRUB_84ms << 8) | (SCRUB_40ns << 0)); scrub_k = 0; /* Wait until the DRAM Scrubber gets past 0k */ while(scrub_k == 0) { scrub_k = pci_read_config32(ctrl[i].f3, SCRUB_ADDR_LOW) >> 10; scrub_k |= pci_read_config32(ctrl[i].f3, SCRUB_ADDR_HIGH) << 22; } /* Wait until the DRAM Scrubber loops */ do { last_scrub_k = scrub_k; scrub_k = pci_read_config32(ctrl[i].f3, SCRUB_ADDR_LOW) >> 10; scrub_k |= pci_read_config32(ctrl[i].f3, SCRUB_ADDR_HIGH) << 22; } while(last_scrub_k <= scrub_k); /* Now stop the scrubber */ pci_write_config32(ctrl[i].f3, SCRUB_CONTROL, (SCRUB_NONE << 16) | (SCRUB_NONE << 8) | (SCRUB_NONE << 0)); } else { /* Wait until the automatic ram scrubber is finished */ dcl &= ~DCL_MemClrStatus; pci_write_config32(ctrl[i].f2, DRAM_CONFIG_LOW, dcl); do { dcl = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_LOW); } while((dcl & DCL_MemClrStatus) == 0); } print_debug("done\r\n"); uint32_t base; /* Disable scrubbing so it is safe to set the scrub address */ pci_write_config32(ctrl[i].f3, SCRUB_CONTROL, (SCRUB_NONE << 16) | (SCRUB_NONE << 8) | (SCRUB_NONE << 0));
/* Find the Srub base address for this cpu */ base = pci_read_config32(ctrl[i].f1, 0x40 + (ctrl[i].node_id << 3)); base &= 0xffff0000;
/* Set the scrub base address registers */ pci_write_config32(ctrl[i].f3, SCRUB_ADDR_LOW, base << 8); pci_write_config32(ctrl[i].f3, SCRUB_ADDR_HIGH, base >> 24);
/* Enable scrubbing at the lowest possible rate */ pci_write_config32(ctrl[i].f3, SCRUB_CONTROL, (SCRUB_84ms << 16) | (SCRUB_84ms << 8) | (SCRUB_84ms << 0)); } } }
* Eric W. Biederman ebiederman@lnxi.com [030801 05:43]:
Here is my most recent snapshot, which is slightly newer than what I have in the public CVS tree.
I think I need to scrub all of memory on the B3 stepping before I start using it. I have not tested anything that is C0 specific yet.
Even with this one I still dont get the kernel up on hdama
I get lots of these:
80065d08:ffffffff 80065d0c:ffffffff 80065d10:ffffffff 80065d14:ffffffff 80065d18:ffffffff 80065d1c:ffffffff
My machine has 2*256MB on each CPU.
driving only the first controller works fine.
(both with old config method.)
Stefan
Stefan Reinauer stepan@suse.de writes:
- Eric W. Biederman ebiederman@lnxi.com [030801 05:43]:
Here is my most recent snapshot, which is slightly newer than what I have in the public CVS tree.
I think I need to scrub all of memory on the B3 stepping before I start using it. I have not tested anything that is C0 specific yet.
Even with this one I still dont get the kernel up on hdama
I get lots of these:
80065d08:ffffffff
80065d0c:ffffffff
80065d10:ffffffff
80065d14:ffffffff
80065d18:ffffffff
80065d1c:ffffffff
My machine has 2*256MB on each CPU.
This is a relic of my debugging code in auto.c Move the test down to 512MB instead of 2GB and you should be fine. I have 2GB in my first cpu...
driving only the first controller works fine.
(both with old config method.)
Stefan
-
ebiederman＠lnxi.com -
Stefan Reinauer -
YhLu