Florian Zumbiehl just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/378
-gerrit
commit 28be6c68a96a99a6e85cc3fc878a2ce748ea7637 Author: Florian Zumbiehl florz@florz.de Date: Tue Nov 1 20:18:30 2011 +0100
factor out common config for k8x8xx's dram_enable() and vt8237r_cfg()
Instead of writing to config registers in k8x8xx's dram_enable() and reading those back in vt8237r_cfg(), factor out generation of the values and reuse that in both places.
Change-Id: I87a37398efe84b33e6678df74cd40b5abfe4f879 Signed-off-by: Florian Zumbiehl florz@florz.de --- src/southbridge/via/k8t890/ctrl.c | 49 ++++++---------------------------- src/southbridge/via/k8t890/dram.c | 18 ++++++------ src/southbridge/via/k8t890/k8x8xx.h | 25 ++++++++++++++++++ 3 files changed, 43 insertions(+), 49 deletions(-)
diff --git a/src/southbridge/via/k8t890/ctrl.c b/src/southbridge/via/k8t890/ctrl.c index 42676b1..7363510 100644 --- a/src/southbridge/via/k8t890/ctrl.c +++ b/src/southbridge/via/k8t890/ctrl.c @@ -31,31 +31,8 @@
static void vt8237r_cfg(struct device *dev, struct device *devsb) { - u8 regm, regm3; - - device_t devfun3; - - devfun3 = dev_find_device(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_K8T800_DRAM, 0); - - if (!devfun3) - devfun3 = dev_find_device(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_K8M800_DRAM, 0); - - if (!devfun3) - devfun3 = dev_find_device(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_K8T890CE_3, 0); - - if (!devfun3) - devfun3 = dev_find_device(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_K8T890CF_3, 0); - - if (!devfun3) - devfun3 = dev_find_device(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_K8M890CE_3, 0); - - if(!devfun3) - die("\n vt8237r_cfg: Unable to find K8x8xx bridge via PCI scan. Stopping.\n"); + u8 regm3; + struct k8x8xx_vt8237_mirrored_regs mregs;
pci_write_config8(dev, 0x70, 0xc2);
@@ -71,21 +48,14 @@ static void vt8237r_cfg(struct device *dev, struct device *devsb) pci_write_config8(dev, 0x7c, 0x7f); pci_write_config8(dev, 0x7f, 0x02);
- /* WARNING: Need to copy some registers from NB (D0F3) to SB (D0F7). */ - - regm = pci_read_config8(devfun3, 0x88); /* Shadow mem CTRL */ - pci_write_config8(dev, 0x57, regm); - - regm = pci_read_config8(devfun3, 0x80); /* Shadow page C */ - pci_write_config8(dev, 0x61, regm); - - regm = pci_read_config8(devfun3, 0x81); /* Shadow page D */ - pci_write_config8(dev, 0x62, regm); + k8x8xx_vt8237_mirrored_regs_fill(&mregs);
- regm = pci_read_config8(devfun3, 0x86); /* SMM and APIC decoding */ - pci_write_config8(dev, 0xe6, regm); + pci_write_config8(dev, 0x57, mregs.shadow_mem_ctrl); /* Shadow mem CTRL */ + pci_write_config8(dev, 0x61, mregs.rom_shadow_ctrl_pg_c); /* Shadow page C */ + pci_write_config8(dev, 0x62, mregs.rom_shadow_ctrl_pg_d); /* Shadow page D */ + pci_write_config8(dev, 0xe6, mregs.smm_apic_decoding); /* SMM and APIC decoding */
- regm3 = pci_read_config8(devfun3, 0x82);/* Shadow page E */ + regm3 = mregs.rom_shadow_ctrl_pg_e_memhole_smi_decoding; /* Shadow page E */
/* * All access bits for 0xE0000-0xEFFFF encode as just 2 bits! @@ -98,8 +68,7 @@ static void vt8237r_cfg(struct device *dev, struct device *devsb) regm3 = 0x0;
/* Shadow page F + memhole copy */ - regm = pci_read_config8(devfun3, 0x83); - pci_write_config8(dev, 0x63, regm3 | (regm & 0x3F)); + pci_write_config8(dev, 0x63, regm3 | (mregs.rom_shadow_ctrl_pg_f_memhole & 0x3F));
}
diff --git a/src/southbridge/via/k8t890/dram.c b/src/southbridge/via/k8t890/dram.c index 9b43a5e..294e387 100644 --- a/src/southbridge/via/k8t890/dram.c +++ b/src/southbridge/via/k8t890/dram.c @@ -30,14 +30,15 @@
static void dram_enable(struct device *dev) { - msr_t msr; u16 reg; + struct k8x8xx_vt8237_mirrored_regs mregs;
+ k8x8xx_vt8237_mirrored_regs_fill(&mregs); /* * Enable Lowest Interrupt arbitration for APIC, enable NB APIC * decoding, MSI support, no SMRAM, compatible SMM. */ - pci_write_config8(dev, 0x86, 0x19); + pci_write_config8(dev, 0x86, mregs.smm_apic_decoding);
/* * We want to use the 0xC0000-0xEFFFF as RAM mark area as RW, even if @@ -48,23 +49,22 @@ static void dram_enable(struct device *dev) /* For CC000-CFFFF, bits 7:6 (10 = REn, 01 = WEn) bits 1:0 for * C0000-C3FFF etc. */ - pci_write_config8(dev, 0x80, 0xff); + pci_write_config8(dev, 0x80, mregs.rom_shadow_ctrl_pg_c); /* For page D0000-DFFFF */ - pci_write_config8(dev, 0x81, 0xff); + pci_write_config8(dev, 0x81, mregs.rom_shadow_ctrl_pg_d); /* For page E0000-EFFFF */ - pci_write_config8(dev, 0x82, 0xff); - pci_write_config8(dev, 0x83, 0x30); + pci_write_config8(dev, 0x82, mregs.rom_shadow_ctrl_pg_e_memhole_smi_decoding); + pci_write_config8(dev, 0x83, mregs.rom_shadow_ctrl_pg_f_memhole);
- msr = rdmsr(TOP_MEM); reg = pci_read_config16(dev, 0x84); reg &= 0xf; - pci_write_config16(dev, 0x84, (msr.lo >> 16) | reg); + pci_write_config16(dev, 0x84, mregs.low_top_address | reg);
reg = pci_read_config16(dev, 0x88); reg &= 0xf800;
/* The Address Next to the Last Valid DRAM Address */ - pci_write_config16(dev, 0x88, (msr.lo >> 24) | reg); + pci_write_config16(dev, 0x88, reg | mregs.shadow_mem_ctrl);
print_debug(" VIA_X_3 device dump:\n"); dump_south(dev); diff --git a/src/southbridge/via/k8t890/k8x8xx.h b/src/southbridge/via/k8t890/k8x8xx.h index a0fb57a..425aaeb 100644 --- a/src/southbridge/via/k8t890/k8x8xx.h +++ b/src/southbridge/via/k8t890/k8x8xx.h @@ -21,6 +21,31 @@ #ifndef SOUTHBRIDGE_VIA_K8T890_K8X8XX_H #define SOUTHBRIDGE_VIA_K8T890_K8X8XX_H
+#include <cpu/x86/msr.h> +#include <cpu/amd/mtrr.h> #include "k8t890.h"
+struct k8x8xx_vt8237_mirrored_regs { + u16 low_top_address; + u8 rom_shadow_ctrl_pg_c, + rom_shadow_ctrl_pg_d, + rom_shadow_ctrl_pg_e_memhole_smi_decoding, + rom_shadow_ctrl_pg_f_memhole, + smm_apic_decoding, + shadow_mem_ctrl; +}; + +static inline void k8x8xx_vt8237_mirrored_regs_fill(struct k8x8xx_vt8237_mirrored_regs *regs){ + msr_t msr; + + regs->rom_shadow_ctrl_pg_c = 0xff; + regs->rom_shadow_ctrl_pg_d = 0xff; + regs->rom_shadow_ctrl_pg_e_memhole_smi_decoding = 0xff; + regs->rom_shadow_ctrl_pg_f_memhole = 0x30; + regs->smm_apic_decoding = 0x19; + msr = rdmsr(TOP_MEM); + regs->shadow_mem_ctrl = msr.lo >> 24; + regs->low_top_address = msr.lo >> 16; +} + #endif /* SOUTHBRIDGE_VIA_K8T890_K8X8XX_H */