[coreboot] [commit] r5073 - in trunk/src: mainboard/rca/rm4100 mainboard/thomson/ip1000 northbridge/intel/i82830
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svn at coreboot.org
Mon Feb 1 23:51:18 CET 2010
Author: linux_junkie
Date: Mon Feb 1 23:51:18 2010
New Revision: 5073
URL: http://tracker.coreboot.org/trac/coreboot/changeset/5073
Log:
Alot of it is trivial clean ups and 830 is now able to initialize one row/side of memory at a time.
Signed-off-by: Joseph Smith <joe at settoplinux.org>
Acked-by: Stefan Reinauer <stepan at coresystems.de>
Modified:
trunk/src/mainboard/rca/rm4100/auto.c
trunk/src/mainboard/thomson/ip1000/auto.c
trunk/src/northbridge/intel/i82830/raminit.c
trunk/src/northbridge/intel/i82830/raminit.h
Modified: trunk/src/mainboard/rca/rm4100/auto.c
==============================================================================
--- trunk/src/mainboard/rca/rm4100/auto.c Sun Jan 31 22:46:12 2010 (r5072)
+++ trunk/src/mainboard/rca/rm4100/auto.c Mon Feb 1 23:51:18 2010 (r5073)
@@ -69,7 +69,6 @@
}
#include "northbridge/intel/i82830/raminit.c"
-#include "lib/generic_sdram.c"
/**
* Setup mainboard specific registers pre raminit.
@@ -103,13 +102,6 @@
static void main(unsigned long bist)
{
- static const struct mem_controller memctrl[] = {
- {
- .d0 = PCI_DEV(0, 0, 0),
- .channel0 = {0x50, 0x51},
- }
- };
-
if (bist == 0)
early_mtrr_init();
if (memory_initialized()) {
@@ -129,10 +121,8 @@
/* Setup mainboard specific registers */
mb_early_setup();
- /* SDRAM init */
- sdram_set_registers(memctrl);
- sdram_set_spd_registers(memctrl);
- sdram_enable(0, memctrl);
+ /* Initialize memory */
+ sdram_initialize();
/* Check RAM. */
/* ram_check(0, 640 * 1024); */
Modified: trunk/src/mainboard/thomson/ip1000/auto.c
==============================================================================
--- trunk/src/mainboard/thomson/ip1000/auto.c Sun Jan 31 22:46:12 2010 (r5072)
+++ trunk/src/mainboard/thomson/ip1000/auto.c Mon Feb 1 23:51:18 2010 (r5073)
@@ -69,7 +69,6 @@
}
#include "northbridge/intel/i82830/raminit.c"
-#include "lib/generic_sdram.c"
/**
* Setup mainboard specific registers pre raminit.
@@ -103,13 +102,6 @@
static void main(unsigned long bist)
{
- static const struct mem_controller memctrl[] = {
- {
- .d0 = PCI_DEV(0, 0, 0),
- .channel0 = {0x50, 0x51},
- }
- };
-
if (bist == 0)
early_mtrr_init();
if (memory_initialized()) {
@@ -129,10 +121,8 @@
/* Setup mainboard specific registers */
mb_early_setup();
- /* SDRAM init */
- sdram_set_registers(memctrl);
- sdram_set_spd_registers(memctrl);
- sdram_enable(0, memctrl);
+ /* Initialize memory */
+ sdram_initialize();
/* Check RAM. */
/* ram_check(0, 640 * 1024); */
Modified: trunk/src/northbridge/intel/i82830/raminit.c
==============================================================================
--- trunk/src/northbridge/intel/i82830/raminit.c Sun Jan 31 22:46:12 2010 (r5072)
+++ trunk/src/northbridge/intel/i82830/raminit.c Mon Feb 1 23:51:18 2010 (r5073)
@@ -1,7 +1,7 @@
/*
* This file is part of the coreboot project.
*
- * Copyright (C) 2008 Joseph Smith <joe at smittys.pointclark.net>
+ * Copyright (C) 2008-2010 Joseph Smith <joe at settoplinux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -67,41 +67,122 @@
#define RAM_COMMAND_IC 0x1
/*-----------------------------------------------------------------------------
-SDRAM configuration functions.
+DIMM-initialization functions.
-----------------------------------------------------------------------------*/
-/* Send the specified RAM command to all DIMMs. */
-
-static void do_ram_command(const struct mem_controller *ctrl, uint32_t command,
- uint32_t addr_offset)
+static void do_ram_command(uint32_t command)
{
- int i;
- uint8_t dimm_start, dimm_end;
uint32_t reg32;
/* Configure the RAM command. */
- reg32 = pci_read_config32(ctrl->d0, DRC);
+ reg32 = pci_read_config32(NORTHBRIDGE, DRC);
/* Clear bits 29, 10-8, 6-4. */
reg32 &= 0xdffff88f;
reg32 |= command << 4;
- pci_write_config32(ctrl->d0, DRC, reg32);
+ pci_write_config32(NORTHBRIDGE, DRC, reg32);
+ PRINT_DEBUG("RAM command 0x");
+ PRINT_DEBUG_HEX32(reg32);
+ PRINT_DEBUG("\r\n");
+}
+
+static void ram_read32(uint8_t dimm_start, uint32_t offset)
+{
+ if (offset == 0x55aa55aa) {
+ PRINT_DEBUG(" Reading RAM at 0x");
+ PRINT_DEBUG_HEX32(dimm_start * 32 * 1024 * 1024);
+ PRINT_DEBUG(" => 0x");
+ PRINT_DEBUG_HEX32(read32(dimm_start * 32 * 1024 * 1024));
+ PRINT_DEBUG("\r\n");
+
+ PRINT_DEBUG(" Writing RAM at 0x");
+ PRINT_DEBUG_HEX32(dimm_start * 32 * 1024 * 1024);
+ PRINT_DEBUG(" <= 0x");
+ PRINT_DEBUG_HEX32(offset);
+ PRINT_DEBUG("\r\n");
+ write32(dimm_start * 32 * 1024 * 1024, offset);
+
+ PRINT_DEBUG(" Reading RAM at 0x");
+ PRINT_DEBUG_HEX32(dimm_start * 32 * 1024 * 1024);
+ PRINT_DEBUG(" => 0x");
+ PRINT_DEBUG_HEX32(read32(dimm_start * 32 * 1024 * 1024));
+ PRINT_DEBUG("\r\n");
+ } else {
+ PRINT_DEBUG(" Sending RAM command to 0x");
+ PRINT_DEBUG_HEX32((dimm_start * 32 * 1024 * 1024) + offset);
+ PRINT_DEBUG("\r\n");
+ read32((dimm_start * 32 * 1024 * 1024) + offset);
+ }
+}
+
+static void initialize_dimm_rows(void)
+{
+ int i, row;
+ uint8_t dimm_start, dimm_end;
+ unsigned device;
- /* Send the ram command to each row of memory.
- * (DIMM_SOCKETS * 2) is the maximum number of rows possible.
- * Note: Each DRB defines the upper boundary address of
- * each SDRAM row in 32-MB granularity.
- */
dimm_start = 0;
- for (i = 0; i < (DIMM_SOCKETS * 2); i++) {
- dimm_end = pci_read_config8(ctrl->d0, DRB + i);
+ for (row = 0; row < (DIMM_SOCKETS * 2); row++) {
+
+ switch (row) {
+ case 0:
+ device = DIMM_SPD_BASE;
+ break;
+ case 1:
+ device = DIMM_SPD_BASE;
+ break;
+ case 2:
+ device = DIMM_SPD_BASE + 1;
+ break;
+ case 3:
+ device = DIMM_SPD_BASE + 1;
+ break;
+ }
+
+ dimm_end = pci_read_config8(NORTHBRIDGE, DRB + row);
+
if (dimm_end > dimm_start) {
- PRINT_DEBUG(" Sending RAM command 0x");
- PRINT_DEBUG_HEX32(reg32);
- PRINT_DEBUG(" to 0x");
- PRINT_DEBUG_HEX32((dimm_start * 32 * 1024 * 1024) + addr_offset);
- PRINT_DEBUG("\r\n");
- read32((dimm_start * 32 * 1024 * 1024) + addr_offset);
+ print_debug("Initializing SDRAM Row ");
+ print_debug_hex8(row);
+ print_debug("\r\n");
+
+ /* NOP command */
+ PRINT_DEBUG(" NOP ");
+ do_ram_command(RAM_COMMAND_NOP);
+ ram_read32(dimm_start, 0);
+ udelay(200);
+
+ /* Pre-charge all banks (at least 200 us after NOP) */
+ PRINT_DEBUG(" Pre-charging all banks ");
+ do_ram_command(RAM_COMMAND_PRECHARGE);
+ ram_read32(dimm_start, 0);
+ udelay(1);
+
+ /* 8 CBR refreshes (Auto Refresh) */
+ PRINT_DEBUG(" 8 CBR refreshes ");
+ for (i = 0; i < 8; i++) {
+ do_ram_command(RAM_COMMAND_CBR);
+ ram_read32(dimm_start, 0);
+ udelay(1);
+ }
+
+ /* MRS command */
+ /* TODO: Set offset 0x1d0 according to DRT values */
+ PRINT_DEBUG(" MRS ");
+ do_ram_command(RAM_COMMAND_MRS);
+ ram_read32(dimm_start, 0x1d0);
+ udelay(2);
+
+ /* Set GMCH-M Mode Select bits back to NORMAL operation mode */
+ PRINT_DEBUG(" Normal operation mode ");
+ do_ram_command(RAM_COMMAND_NORMAL);
+ ram_read32(dimm_start, 0);
+ udelay(1);
+
+ /* Perform a dummy memory read/write cycle */
+ PRINT_DEBUG(" Performing dummy read/write\r\n");
+ ram_read32(dimm_start, 0x55aa55aa);
+ udelay(1);
}
/* Set the start of the next DIMM. */
dimm_start = dimm_end;
@@ -122,8 +203,8 @@
struct dimm_size sz;
int i, module_density, dimm_banks;
sz.side1 = 0;
- module_density = spd_read_byte(device, 31);
- dimm_banks = spd_read_byte(device, 5);
+ module_density = spd_read_byte(device, SPD_DENSITY_OF_EACH_ROW_ON_MODULE);
+ dimm_banks = spd_read_byte(device, SPD_NUM_DIMM_BANKS);
/* Find the size of side1. */
/* Find the larger value. The larger value is always side1. */
@@ -163,19 +244,19 @@
return sz;
}
-static void spd_set_dram_size(const struct mem_controller *ctrl)
+static void set_dram_row_boundaries(void)
{
int i, value, drb1, drb2;
for (i = 0; i < DIMM_SOCKETS; i++) {
struct dimm_size sz;
unsigned device;
- device = ctrl->channel0[i];
+ device = DIMM_SPD_BASE + i;
drb1 = 0;
drb2 = 0;
/* First check if a DIMM is actually present. */
- if (spd_read_byte(device, 2) == 0x4) {
+ if (spd_read_byte(device, SPD_MEMORY_TYPE) == 0x4) {
print_debug("Found DIMM in slot ");
print_debug_hex8(i);
print_debug("\r\n");
@@ -190,14 +271,15 @@
print_debug_hex16(sz.side2);
print_debug(" on side 2\r\n");
+ /* - Memory compatibility checks - */
/* Test for PC133 (i82830 only supports PC133) */
/* PC133 SPD9 - cycle time is always 75 */
- if (spd_read_byte(device, 9) != 0x75) {
+ if (spd_read_byte(device, SPD_MIN_CYCLE_TIME_AT_CAS_MAX) != 0x75) {
print_err("SPD9 DIMM Is Not PC133 Compatable\r\n");
die("HALT\r\n");
}
/* PC133 SPD10 - access time is always 54 */
- if (spd_read_byte(device, 10) != 0x54) {
+ if (spd_read_byte(device, SPD_ACCESS_TIME_FROM_CLOCK) != 0x54) {
print_err("SPD10 DIMM Is Not PC133 Compatable\r\n");
die("HALT\r\n");
}
@@ -225,6 +307,7 @@
("are not supported on this northbridge\r\n");
die("HALT\r\n");
}
+ /* - End Memory compatibility checks - */
/* We need to divide size by 32 to set up the
* DRB registers.
@@ -244,8 +327,8 @@
}
/* Set the value for DRAM Row Boundary Registers */
if (i == 0) {
- pci_write_config8(ctrl->d0, DRB, drb1);
- pci_write_config8(ctrl->d0, DRB + 1, drb1 + drb2);
+ pci_write_config8(NORTHBRIDGE, DRB, drb1);
+ pci_write_config8(NORTHBRIDGE, DRB + 1, drb1 + drb2);
PRINT_DEBUG("DRB 0x");
PRINT_DEBUG_HEX8(DRB);
PRINT_DEBUG(" has been set to 0x");
@@ -257,10 +340,9 @@
PRINT_DEBUG_HEX8(drb1 + drb2);
PRINT_DEBUG("\r\n");
} else if (i == 1) {
- value = pci_read_config8(ctrl->d0, DRB + 1);
- pci_write_config8(ctrl->d0, DRB + 2, value + drb1);
- pci_write_config8(ctrl->d0, DRB + 3,
- value + drb1 + drb2);
+ value = pci_read_config8(NORTHBRIDGE, DRB + 1);
+ pci_write_config8(NORTHBRIDGE, DRB + 2, value + drb1);
+ pci_write_config8(NORTHBRIDGE, DRB + 3, value + drb1 + drb2);
PRINT_DEBUG("DRB2 0x");
PRINT_DEBUG_HEX8(DRB + 2);
PRINT_DEBUG(" has been set to 0x");
@@ -276,23 +358,23 @@
* These are supposed to be "Reserved" but memory will
* not initialize properly if we don't.
*/
- value = pci_read_config8(ctrl->d0, DRB + 3);
- pci_write_config8(ctrl->d0, DRB + 4, value);
- pci_write_config8(ctrl->d0, DRB + 5, value);
+ value = pci_read_config8(NORTHBRIDGE, DRB + 3);
+ pci_write_config8(NORTHBRIDGE, DRB + 4, value);
+ pci_write_config8(NORTHBRIDGE, DRB + 5, value);
}
}
}
-static void set_dram_row_attributes(const struct mem_controller *ctrl)
+static void set_dram_row_attributes(void)
{
int i, dra, col, width, value;
for (i = 0; i < DIMM_SOCKETS; i++) {
unsigned device;
- device = ctrl->channel0[i];
+ device = DIMM_SPD_BASE + i;
/* First check if a DIMM is actually present. */
- if (spd_read_byte(device, 2) == 0x4) {
+ if (spd_read_byte(device, SPD_MEMORY_TYPE) == 0x4) {
print_debug("Found DIMM in slot ");
print_debug_hex8(i);
print_debug(", setting DRA...\r\n");
@@ -300,10 +382,10 @@
dra = 0x00;
/* columns */
- col = spd_read_byte(device, 4);
+ col = spd_read_byte(device, SPD_NUM_COLUMNS);
/* data width */
- width = spd_read_byte(device, 6);
+ width = spd_read_byte(device, SPD_MODULE_DATA_WIDTH_LSB);
/* calculate page size in bits */
value = ((1 << col) * width);
@@ -312,7 +394,7 @@
dra = ((value / 8) >> 10);
/* # of banks of DIMM (single or double sided) */
- value = spd_read_byte(device, 5);
+ value = spd_read_byte(device, SPD_NUM_DIMM_BANKS);
if (value == 1) {
if (dra == 2) {
@@ -355,7 +437,7 @@
}
/* Set the value for DRAM Row Attribute Registers */
- pci_write_config8(ctrl->d0, DRA + i, dra);
+ pci_write_config8(NORTHBRIDGE, DRA + i, dra);
PRINT_DEBUG("DRA 0x");
PRINT_DEBUG_HEX8(DRA + i);
PRINT_DEBUG(" has been set to 0x");
@@ -364,14 +446,14 @@
}
}
-static void set_dram_timing(const struct mem_controller *ctrl)
+static void set_dram_timing(void)
{
/* Set the value for DRAM Timing Register */
/* TODO: Configure the value according to SPD values. */
- pci_write_config32(ctrl->d0, DRT, 0x00000010);
+ pci_write_config32(NORTHBRIDGE, DRT, 0x00000010);
}
-static void set_dram_buffer_strength(const struct mem_controller *ctrl)
+static void set_dram_buffer_strength(void)
{
/* TODO: This needs to be set according to the DRAM tech
* (x8, x16, or x32). Argh, Intel provides no docs on this!
@@ -380,22 +462,61 @@
*/
/* Set the value for System Memory Buffer Strength Control Registers */
- pci_write_config32(ctrl->d0, BUFF_SC, 0xFC9B491B);
+ pci_write_config32(NORTHBRIDGE, BUFF_SC, 0xFC9B491B);
}
/*-----------------------------------------------------------------------------
Public interface.
-----------------------------------------------------------------------------*/
-static void sdram_set_registers(const struct mem_controller *ctrl)
+static void sdram_set_registers(void)
+{
+ PRINT_DEBUG("Setting initial sdram registers....\r\n");
+
+ /* Calculate the value for DRT DRAM Timing Register */
+ set_dram_timing();
+
+ /* Setup System Memory Buffer Strength Control Registers */
+ set_dram_buffer_strength();
+
+ /* Setup DRAM Row Boundary Registers */
+ set_dram_row_boundaries();
+
+ /* Setup DRAM Row Attribute Registers */
+ set_dram_row_attributes();
+
+ PRINT_DEBUG("Initial sdram registers have been set.\r\n");
+}
+
+static void northbridge_set_registers(void)
{
uint16_t value;
int igd_memory = 0;
- PRINT_DEBUG("Setting initial registers....\r\n");
+ PRINT_DEBUG("Setting initial nothbridge registers....\r\n");
+
+ /* Set the value for Fixed DRAM Hole Control Register */
+ pci_write_config8(NORTHBRIDGE, FDHC, 0x00);
+
+ /* Set the value for Programable Attribute Map Registers
+ * Ideally, this should be R/W for as many ranges as possible.
+ */
+ pci_write_config8(NORTHBRIDGE, PAM0, 0x30);
+ pci_write_config8(NORTHBRIDGE, PAM1, 0x33);
+ pci_write_config8(NORTHBRIDGE, PAM2, 0x33);
+ pci_write_config8(NORTHBRIDGE, PAM3, 0x33);
+ pci_write_config8(NORTHBRIDGE, PAM4, 0x33);
+ pci_write_config8(NORTHBRIDGE, PAM5, 0x33);
+ pci_write_config8(NORTHBRIDGE, PAM6, 0x33);
+
+ /* Set the value for System Management RAM Control Register */
+ pci_write_config8(NORTHBRIDGE, SMRAM, 0x02);
/* Set the value for GMCH Control Register #0 */
- pci_write_config16(ctrl->d0, GCC0, 0xA072);
+ pci_write_config16(NORTHBRIDGE, GCC0, 0xA072);
+
+ /* Set the value for Aperture Base Configuration Register */
+ pci_write_config32(NORTHBRIDGE, APBASE, 0x00000008);
/* Set the value for GMCH Control Register #1 */
switch (CONFIG_VIDEO_MB) {
@@ -409,95 +530,45 @@
igd_memory = 0x4;
break;
default: /* No memory */
- pci_write_config16(ctrl->d0, GCC1, 0x0002);
+ pci_write_config16(NORTHBRIDGE, GCC1, 0x0002);
igd_memory = 0x0;
}
- value = pci_read_config16(ctrl->d0, GCC1);
+ value = pci_read_config16(NORTHBRIDGE, GCC1);
value |= igd_memory << 4;
- pci_write_config16(ctrl->d0, GCC1, value);
-
- /* Set the value for Aperture Base Configuration Register */
- pci_write_config32(ctrl->d0, APBASE, 0x00000008);
-
- /* Set the value for Register Range Base Address Register */
- pci_write_config32(ctrl->d0, RRBAR, 0x00000000);
+ pci_write_config16(NORTHBRIDGE, GCC1, value);
- /* Set the value for Fixed DRAM Hole Control Register */
- pci_write_config8(ctrl->d0, FDHC, 0x00);
-
- /* Set the value for Programable Attribute Map Registers
- * Ideally, this should be R/W for as many ranges as possible.
- */
- pci_write_config8(ctrl->d0, PAM0, 0x30);
- pci_write_config8(ctrl->d0, PAM1, 0x33);
- pci_write_config8(ctrl->d0, PAM2, 0x33);
- pci_write_config8(ctrl->d0, PAM3, 0x33);
- pci_write_config8(ctrl->d0, PAM4, 0x33);
- pci_write_config8(ctrl->d0, PAM5, 0x33);
- pci_write_config8(ctrl->d0, PAM6, 0x33);
-
- /* Set the value for DRAM Throttling Control Register */
- pci_write_config32(ctrl->d0, DTC, 0x00000000);
-
- /* Set the value for System Management RAM Control Register */
- pci_write_config8(ctrl->d0, SMRAM, 0x02);
-
- /* Set the value for Extended System Management RAM Control Register */
- pci_write_config8(ctrl->d0, ESMRAMC, 0x38);
-
- PRINT_DEBUG("Initial registers have been set.\r\n");
-}
-
-static void sdram_set_spd_registers(const struct mem_controller *ctrl)
-{
- spd_set_dram_size(ctrl);
- set_dram_row_attributes(ctrl);
- set_dram_timing(ctrl);
- set_dram_buffer_strength(ctrl);
+ PRINT_DEBUG("Initial northbridge registers have been set.\r\n");
}
-static void sdram_enable(int controllers, const struct mem_controller *ctrl)
+static void sdram_initialize(void)
{
int i;
uint32_t reg32;
+ /* Setup Initial SDRAM Registers */
+ sdram_set_registers();
+
/* 0. Wait until power/voltages and clocks are stable (200us). */
udelay(200);
- /* 1. Apply NOP. */
- PRINT_DEBUG("RAM Enable 1: Apply NOP\r\n");
- do_ram_command(ctrl, RAM_COMMAND_NOP, 0);
- udelay(200);
+ /* Initialize each row of memory one at a time */
+ initialize_dimm_rows();
- /* 2. Precharge all. Wait tRP. */
- PRINT_DEBUG("RAM Enable 2: Precharge all\r\n");
- do_ram_command(ctrl, RAM_COMMAND_PRECHARGE, 0);
- udelay(1);
-
- /* 3. Perform 8 refresh cycles. Wait tRC each time. */
- PRINT_DEBUG("RAM Enable 3: CBR\r\n");
- for (i = 0; i < 8; i++) {
- do_ram_command(ctrl, RAM_COMMAND_CBR, 0);
- udelay(1);
- }
+ /* Enable Refresh */
+ PRINT_DEBUG("Enabling Refresh\r\n");
+ reg32 = pci_read_config32(NORTHBRIDGE, DRC);
+ reg32 |= (RAM_COMMAND_REFRESH << 8);
+ pci_write_config32(NORTHBRIDGE, DRC, reg32);
+
+ /* Set initialization complete */
+ PRINT_DEBUG("Setting initialization complete\r\n");
+ reg32 = pci_read_config32(NORTHBRIDGE, DRC);
+ reg32 |= (RAM_COMMAND_IC << 29);
+ pci_write_config32(NORTHBRIDGE, DRC, reg32);
- /* 4. Mode register set. Wait two memory cycles. */
- /* TODO: Set offset according to DRT values */
- PRINT_DEBUG("RAM Enable 4: Mode register set\r\n");
- do_ram_command(ctrl, RAM_COMMAND_MRS, 0x1d0);
- udelay(2);
-
- /* 5. Normal operation (enables refresh) */
- PRINT_DEBUG("RAM Enable 5: Normal operation\r\n");
- do_ram_command(ctrl, RAM_COMMAND_NORMAL, 0);
- udelay(1);
-
- /* 6. Enable refresh and Set initialization complete. */
- PRINT_DEBUG("RAM Enable 6: Enable Refresh and IC\r\n");
- reg32 = pci_read_config32(ctrl->d0, DRC);
- reg32 |= ((RAM_COMMAND_REFRESH << 8) | (RAM_COMMAND_IC << 29));
- pci_write_config32(ctrl->d0, DRC, reg32);
+ /* Setup Initial Northbridge Registers */
+ northbridge_set_registers();
PRINT_DEBUG("Northbridge following SDRAM init:\r\n");
DUMPNORTH();
Modified: trunk/src/northbridge/intel/i82830/raminit.h
==============================================================================
--- trunk/src/northbridge/intel/i82830/raminit.h Sun Jan 31 22:46:12 2010 (r5072)
+++ trunk/src/northbridge/intel/i82830/raminit.h Mon Feb 1 23:51:18 2010 (r5073)
@@ -1,7 +1,7 @@
/*
* This file is part of the coreboot project.
*
- * Copyright (C) 2008 Joseph Smith <joe at smittys.pointclark.net>
+ * Copyright (C) 2008-2010 Joseph Smith <joe at settoplinux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -21,12 +21,13 @@
#ifndef NORTHBRIDGE_INTEL_I82830_RAMINIT_H
#define NORTHBRIDGE_INTEL_I82830_RAMINIT_H
+/* 82830 Northbridge PCI device */
+#define NORTHBRIDGE PCI_DEV(0, 0, 0)
+
/* The 82830 supports max. 2 dual-sided SO-DIMMs. */
#define DIMM_SOCKETS 2
-struct mem_controller {
- device_t d0;
- uint16_t channel0[DIMM_SOCKETS];
-};
+/* DIMM0 is at 0x50, DIMM1 is at 0x51. */
+#define DIMM_SPD_BASE 0x50
#endif /* NORTHBRIDGE_INTEL_I82830_RAMINIT_H */
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