diff options
| -rw-r--r-- | src/include/cpu/amd/gx2def.h | 181 | ||||
| -rw-r--r-- | src/northbridge/amd/gx2/pll_reset.c | 117 |
2 files changed, 147 insertions, 151 deletions
diff --git a/src/include/cpu/amd/gx2def.h b/src/include/cpu/amd/gx2def.h index b58569deb8..eaaeca4328 100644 --- a/src/include/cpu/amd/gx2def.h +++ b/src/include/cpu/amd/gx2def.h @@ -1,5 +1,6 @@ #ifndef CPU_AMD_GX2DEF_H #define CPU_AMD_GX2DEF_H + #define CPU_ID_1_X 0x540 /* Stepping ID 1.x*/ #define CPU_ID_2_0 0x551 /* Stepping ID 2.0*/ #define CPU_ID_2_1 0x552 /* Stepping ID 2.1*/ @@ -13,6 +14,7 @@ #define CPU_REV_2_1 0x021 #define CPU_REV_2_2 0x022 #define CPU_REV_3_0 0x030 + /* GeodeLink Control Processor Registers, GLIU1, Port 3 */ #define GLCP_CLK_DIS_DELAY 0x4c000008 #define GLCP_PMCLKDISABLE 0x4c000009 @@ -37,28 +39,27 @@ #define GLCP_SYS_RSTPLL_PCI_SEMI_SYNC_MODE 8 #define GLCP_SYS_RSTPLL_CHIP_RESET 0 -/* MSR routing as follows*/ -/* MSB = 1 means not for CPU*/ -/* next 3 bits 1st port*/ -/* next3 bits next port if through an GLIU*/ -/* etc...*/ +/* MSR routing as follows */ +/* MSB = 1 means not for CPU */ +/* next 3 bits 1st port */ +/* next3 bits next port if through an GLIU */ +/* etc... */ -/*Redcloud as follows.*/ +/* Redcloud as follows. */ /* GLIU0*/ -/* port0 - GLIU0*/ -/* port1 - MC*/ -/* port2 - GLIU1*/ -/* port3 - CPU*/ -/* port4 - VG*/ -/* port5 - GP*/ -/* port6 - DF*/ +/* port0 - GLIU0 */ +/* port1 - MC */ +/* port2 - GLIU1 */ +/* port3 - CPU */ +/* port4 - VG */ +/* port5 - GP */ +/* port6 - DF */ /* GLIU1*/ -/* port1 - GLIU0*/ -/* port3 - GLCP*/ -/* port4 - PCI*/ -/* port5 - FG*/ - +/* port1 - GLIU0 */ +/* port3 - GLCP */ +/* port4 - PCI */ +/* port5 - FG */ #define GL0_GLIU0 0 #define GL0_MC 1 @@ -78,7 +79,7 @@ #define MSR_GLIU0 (GL0_GLIU0 << 29) + (1 << 28) /* 1000xxxx - To get on GeodeLink one bit has to be set */ #define MSR_MC (GL0_MC << 29) /* 2000xxxx */ #define MSR_GLIU1 (GL0_GLIU1 << 29) /* 4000xxxx */ -#define MSR_CPU (GL0_CPU << 29) /* 6000xxxx - this is not used for BIOS since code executing on CPU doesn't need to be routed*/ +#define MSR_CPU (GL0_CPU << 29) /* 6000xxxx - this is not used for BIOS since code executing on CPU doesn't need to be routed */ #define MSR_VG (GL0_VG << 29) /* 8000xxxx */ #define MSR_GP (GL0_GP << 29) /* A000xxxx */ #define MSR_DF (GL0_DF << 29) /* C000xxxx */ @@ -88,14 +89,11 @@ #define MSR_FG (GL1_FG << 26) + MSR_GLIU1 /* 5400xxxx */ #define MSR_VIP ((GL1_VIP << 26) + MSR_GLIU1) /* 5400xxxx */ #define MSR_AES ((GL1_AES << 26) + MSR_GLIU1) /* 5800xxxx */ -/* South Bridge*/ -#define SB_PORT 2 /* port of the SouthBridge */ - -/**/ -/*GeodeLink Interface Unit 0 (GLIU0) port0*/ -/**/ +/* South Bridge */ +#define SB_PORT 2 /* port of the SouthBridge */ +/* GeodeLink Interface Unit 0 (GLIU0) port0 */ #define GLIU0_GLD_MSR_CAP (MSR_GLIU0 + 0x2000) #define GLIU0_GLD_MSR_PM (MSR_GLIU0 + 0x2004) @@ -103,10 +101,7 @@ #define GLIU0_CAP (MSR_GLIU0 + 0x86) #define GLIU0_GLD_MSR_COH (MSR_GLIU0 + 0x80) - -/**/ -/* Memory Controller GLIU0 port 1*/ -/**/ +/* Memory Controller GLIU0 port 1 */ #define MC_GLD_MSR_CAP (MSR_MC + 0x2000) #define MC_GLD_MSR_PM (MSR_MC + 0x2004) @@ -129,7 +124,6 @@ #define CF07_LOWER_REF_TEST_SET (1 << 3) #define CF07_LOWER_PROG_DRAM_SET (1 << 0) - #define MC_CF8F_DATA (MSR_MC + 0x19) #define CF8F_UPPER_XOR_BS_SHIFT 19 @@ -164,19 +158,13 @@ #define MC_CF_RDSYNC (MSR_MC + 0x1F) - -/**/ -/* GLIU1 GLIU0 port2*/ -/**/ +/* GLIU1 GLIU0 port2 */ #define GLIU1_GLD_MSR_CAP (MSR_GLIU1 + 0x2000) #define GLIU1_GLD_MSR_PM (MSR_GLIU1 + 0x2004) #define GLIU1_GLD_MSR_COH (MSR_GLIU1 + 0x80) - -/**/ -/* CPU ; does not need routing instructions since we are executing there.*/ -/**/ +/* CPU ; does not need routing instructions since we are executing there. */ #define CPU_GLD_MSR_CAP 0x2000 #define CPU_GLD_MSR_CONFIG 0x2001 #define CPU_GLD_MSR_PM 0x2004 @@ -200,7 +188,7 @@ #define CPU_AC_MSR 0x1301 #define CPU_EX_BIST 0x1428 -/*IM*/ +/* IM */ #define CPU_IM_CONFIG 0x1700 #define IM_CONFIG_LOWER_ICD_SET (1 << 8) #define IM_CONFIG_LOWER_QWT_SET (1 << 20) @@ -215,13 +203,13 @@ #define CPU_IM_BIST_TAG 0x1730 #define CPU_IM_BIST_DATA 0x1731 - /* various CPU MSRs */ #define CPU_DM_CONFIG0 0x1800 #define DM_CONFIG0_UPPER_WSREQ_SHIFT 12 #define DM_CONFIG0_LOWER_DCDIS_SET (1<<8) #define DM_CONFIG0_LOWER_WBINVD_SET (1<<5) #define DM_CONFIG0_LOWER_MISSER_SET (1<<1) + /* configuration MSRs */ #define CPU_RCONF_DEFAULT 0x1808 #define RCONF_DEFAULT_UPPER_ROMRC_SHIFT 24 @@ -276,7 +264,7 @@ #define CPU_L2TB_ENTRY 0x189E #define CPU_L2TB_ENTRY_I 0x189F #define CPU_DM_BIST 0x18C0 - /* SMM*/ + /* SMM */ #define CPU_AC_SMM_CTL 0x1301 #define SMM_NMI_EN_SET (1<<0) #define SMM_SUSP_EN_SET (1<<1) @@ -294,10 +282,7 @@ #define TSC_SUSP_SET (1<<5) #define SUSP_EN_SET (1<<12) - /**/ - /* VG GLIU0 port4*/ - /**/ - +/* VG GLIU0 port4 */ #define VG_GLD_MSR_CAP (MSR_VG + 0x2000) #define VG_GLD_MSR_CONFIG (MSR_VG + 0x2001) #define VG_GLD_MSR_PM (MSR_VG + 0x2004) @@ -306,29 +291,20 @@ #define GP_GLD_MSR_CONFIG (MSR_GP + 0x2001) #define GP_GLD_MSR_PM (MSR_GP + 0x2004) - - -/**/ -/* DF GLIU0 port6*/ -/**/ - +/* DF GLIU0 port6 */ #define DF_GLD_MSR_CAP (MSR_DF + 0x2000) #define DF_GLD_MSR_MASTER_CONF (MSR_DF + 0x2001) #define DF_LOWER_LCD_SHIFT 6 #define DF_GLD_MSR_PM (MSR_DF + 0x2004) - - -/**/ -/* GeodeLink Control Processor GLIU1 port3*/ -/**/ +/* GeodeLink Control Processor GLIU1 port3 */ #define GLCP_GLD_MSR_CAP (MSR_GLCP + 0x2000) #define GLCP_GLD_MSR_CONF (MSR_GLCP + 0x2001) #define GLCP_GLD_MSR_PM (MSR_GLCP + 0x2004) #define GLCP_DELAY_CONTROLS (MSR_GLCP + 0x0F) -#define GLCP_SYS_RSTPLL (MSR_GLCP +0x14 /* R/W*/) +#define GLCP_SYS_RSTPLL (MSR_GLCP +0x14 /* R/W */) #define RSTPLL_UPPER_MDIV_SHIFT 9 #define RSTPLL_UPPER_VDIV_SHIFT 6 #define RSTPLL_UPPER_FBDIV_SHIFT 0 @@ -352,13 +328,10 @@ #define RSTPPL_LOWER_PCI_SEMI_SYNC_SET (1<<8) #define RSTPPL_LOWER_CHIP_RESET_SET (1<<0) -#define GLCP_DOTPLL (MSR_GLCP + 0x15 /* R/W*/) +#define GLCP_DOTPLL (MSR_GLCP + 0x15 /* R/W */) #define DOTPPL_LOWER_PD_SET (1<<14) - -/**/ -/* GLIU1 port 4*/ -/**/ +/* GLIU1 port 4 */ #define GLPCI_GLD_MSR_CAP (MSR_PCI + 0x2000) #define GLPCI_GLD_MSR_CONFIG (MSR_PCI + 0x2001) #define GLPCI_GLD_MSR_PM (MSR_PCI + 0x2004) @@ -423,64 +396,60 @@ #define GLPCI_SPARE_LOWER_NSE_SET (1<<1) #define GLPCI_SPARE_LOWER_SUPO_SET (1<<0) - -/**/ -/* FooGlue GLIU1 port 5*/ -/**/ +/* FooGlue GLIU1 port 5 */ #define FG_GLD_MSR_CAP (MSR_FG + 0x2000) #define FG_GLD_MSR_PM (MSR_FG + 0x2004) -/* VIP GLIU1 port 5*/ -/* */ +/* VIP GLIU1 port 5 */ #define VIP_GLD_MSR_CAP (MSR_VIP + 0x2000) #define VIP_GLD_MSR_CONFIG (MSR_VIP + 0x2001) #define VIP_GLD_MSR_PM (MSR_VIP + 0x2004) #define VIP_BIST (MSR_VIP + 0x2005) #define VIP_GIO_MSR_SEL (MSR_VIP + 0x2010) -/* */ -/* AES GLIU1 port 6*/ -/* */ + +/* AES GLIU1 port 6 */ #define AES_GLD_MSR_CAP (MSR_AES + 0x2000) #define AES_GLD_MSR_CONFIG (MSR_AES + 0x2001) #define AES_GLD_MSR_PM (MSR_AES + 0x2004) #define AES_CONTROL (MSR_AES + 0x2006) + /* more fun stuff */ -#define BM 1 /* Base Mask - map power of 2 size aligned region*/ -#define BMO 2 /* BM with an offset*/ -#define R 3 /* Range - 4k range minimum*/ -#define RO 4 /* R with offset*/ -#define SC 5 /* Swiss 0xCeese - maps a 256K region in to 16K 0xcunks. Set W/R*/ -#define BMIO 6 /* Base Mask IO*/ -#define SCIO 7 /* Swiss 0xCeese IO*/ -#define SC_SHADOW 8 /* Special marker for Shadow SC descriptors so setShadow proc is independant of CPU*/ -#define R_SYSMEM 9 /* Special marker for SYSMEM R descriptors so GLIUInit proc is independant of CPU*/ -#define BMO_SMM 10 /* Specail marker for SMM*/ -#define BM_SMM 11 /* Specail marker for SMM*/ -#define BMO_DMM 12 /* Specail marker for DMM*/ -#define BM_DMM 13 /* Specail marker for DMM*/ -#define RO_FB 14 /* special for Frame buffer.*/ -#define R_FB 15 /* special for FB.*/ -#define OTHER 0x0FE /* Special marker for other*/ -#define GL_END 0x0FF /* end*/ +#define BM 1 /* Base Mask - map power of 2 size aligned region */ +#define BMO 2 /* BM with an offset */ +#define R 3 /* Range - 4k range minimum */ +#define RO 4 /* R with offset */ +#define SC 5 /* Swiss 0xCeese - maps a 256K region in to 16K 0xcunks. Set W/R */ +#define BMIO 6 /* Base Mask IO */ +#define SCIO 7 /* Swiss 0xCeese IO */ +#define SC_SHADOW 8 /* Special marker for Shadow SC descriptors so setShadow proc is independant of CPU */ +#define R_SYSMEM 9 /* Special marker for SYSMEM R descriptors so GLIUInit proc is independant of CPU */ +#define BMO_SMM 10 /* Specail marker for SMM */ +#define BM_SMM 11 /* Specail marker for SMM */ +#define BMO_DMM 12 /* Specail marker for DMM */ +#define BM_DMM 13 /* Specail marker for DMM */ +#define RO_FB 14 /* special for Frame buffer. */ +#define R_FB 15 /* special for FB. */ +#define OTHER 0x0FE /* Special marker for other */ +#define GL_END 0x0FF /* end */ #define MSR_GL0 (GL1_GLIU0 << 29) -/* Set up desc addresses from 20 - 3f*/ -/* This is chip specific!*/ -#define MSR_GLIU0_BASE1 (MSR_GLIU0 + 0x20) /* BM*/ -#define MSR_GLIU0_BASE2 (MSR_GLIU0 + 0x21) /* BM*/ -#define MSR_GLIU0_SHADOW (MSR_GLIU0 + 0x2C) /* SCO should only be SC*/ -#define MSR_GLIU0_SYSMEM (MSR_GLIU0 + 0x28) /* RO should only be R*/ -#define MSR_GLIU0_SMM (MSR_GLIU0 + 0x26) /* BMO*/ -#define MSR_GLIU0_DMM (MSR_GLIU0 + 0x27) /* BMO*/ - -#define MSR_GLIU1_BASE1 (MSR_GLIU1 + 0x20) /* BM*/ -#define MSR_GLIU1_BASE2 (MSR_GLIU1 + 0x21) /* BM*/ -#define MSR_GLIU1_SHADOW (MSR_GLIU1 + 0x2D) /* SCO should only be SC*/ -#define MSR_GLIU1_SYSMEM (MSR_GLIU1 + 0x29) /* RO should only be R*/ -#define MSR_GLIU1_SMM (MSR_GLIU1 + 0x23) /* BM*/ -#define MSR_GLIU1_DMM (MSR_GLIU1 + 0x24) /* BM*/ -#define MSR_GLIU1_FPU_TRAP (MSR_GLIU1 + 0x0E3) /* FooGlue F0 for FPU*/ +/* Set up desc addresses from 20 - 3f */ +/* This is chip specific! */ +#define MSR_GLIU0_BASE1 (MSR_GLIU0 + 0x20) /* BM */ +#define MSR_GLIU0_BASE2 (MSR_GLIU0 + 0x21) /* BM */ +#define MSR_GLIU0_SHADOW (MSR_GLIU0 + 0x2C) /* SCO should only be SC */ +#define MSR_GLIU0_SYSMEM (MSR_GLIU0 + 0x28) /* RO should only be R */ +#define MSR_GLIU0_SMM (MSR_GLIU0 + 0x26) /* BMO */ +#define MSR_GLIU0_DMM (MSR_GLIU0 + 0x27) /* BMO */ + +#define MSR_GLIU1_BASE1 (MSR_GLIU1 + 0x20) /* BM */ +#define MSR_GLIU1_BASE2 (MSR_GLIU1 + 0x21) /* BM */ +#define MSR_GLIU1_SHADOW (MSR_GLIU1 + 0x2D) /* SCO should only be SC */ +#define MSR_GLIU1_SYSMEM (MSR_GLIU1 + 0x29) /* RO should only be R */ +#define MSR_GLIU1_SMM (MSR_GLIU1 + 0x23) /* BM */ +#define MSR_GLIU1_DMM (MSR_GLIU1 + 0x24) /* BM */ +#define MSR_GLIU1_FPU_TRAP (MSR_GLIU1 + 0x0E3) /* FooGlue F0 for FPU */ /* definitions that are "once you are mostly up, start VSA" type things */ #define SMM_OFFSET 0x40400000 @@ -503,9 +472,7 @@ #define CHIPSET_DEV_NUM 15 #define IDSEL_BASE 11 // bit 11 = device 1 -/* */ -/* SB LBAR IO + MEMORY MAP*/ -/* */ +/* SB LBAR IO + MEMORY MAP */ #define SMBUS_BASE ( 0x6000) #define GPIO_BASE ( 0x6100) #define MFGPT_BASE ( 0x6200) diff --git a/src/northbridge/amd/gx2/pll_reset.c b/src/northbridge/amd/gx2/pll_reset.c index a434307035..19b0946346 100644 --- a/src/northbridge/amd/gx2/pll_reset.c +++ b/src/northbridge/amd/gx2/pll_reset.c @@ -1,3 +1,23 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2007 Advanced Micro Devices, Inc. + * Copyright (C) 2010 Nils Jacobs + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + #include <cpu/x86/tsc.h> #define CLOCK_TICK_RATE 1193180U /* Underlying HZ */ @@ -69,7 +89,7 @@ bad_ctc: /* spll_raw_clk = SYSREF * FbDIV, * GLIU Clock = spll_raw_clk / MDIV - * CPU Clock = sppl_raw_clk / VDIV + * CPU Clock = spll_raw_clk / VDIV */ /* table for Feedback divisor to FbDiv register value */ @@ -99,6 +119,15 @@ static const unsigned char pci33_ddr_crt [] = { 26, 2, 3 // 433/289 }; +/* FbDIV VDIV MDIV CPU/GeodeLink */ +/* 12 2 3 200/133 */ +/* 16 2 3 266/177 */ +/* 18 2 3 300/200 */ +/* 20 2 3 333/222 */ +/* 22 2 3 366/244 */ +/* 24 2 3 400/266 */ +/* 26 2 3 433/289 */ + #if 0 static unsigned int get_memory_speed(void) { @@ -118,12 +147,12 @@ static unsigned int get_memory_speed(void) /////////////////////////////////////////////////////////////////////////////// // Goodrich Version of pll_reset -// PLLCHECK_COMPLETED is the "we've already done this" flag +/* PLLCHECK_COMPLETED is the "we've already done this" flag */ #define PLLCHECK_COMPLETED (1 << RSTPLL_LOWER_SWFLAGS_SHIFT) #ifndef RSTPPL_LOWER_BYPASS_SET #define RSTPPL_LOWER_BYPASS_SET (1 << GLCP_SYS_RSTPLL_BYPASS) -#endif // RSTPPL_LOWER_BYPASS_SET +#endif /* RSTPPL_LOWER_BYPASS_SET */ #define DEFAULT_MDIV 3 #define DEFAULT_VDIV 2 @@ -133,84 +162,84 @@ static void pll_reset(void) { msr_t msrGlcpSysRstpll; unsigned MDIV_VDIV_FBDIV; - unsigned SyncBits; // store the sync bits in up ebx + unsigned SyncBits; /* store the sync bits in up ebx */ - // clear the Bypass bit + /* clear the Bypass bit */ - // If the straps say we are in bypass and the syspll is not AND there are no software - // bits set then FS2 or something set up the PLL and we should not change it. + /* If the straps say we are in bypass and the syspll is not AND there are no software */ + /* bits set then FS2 or something set up the PLL and we should not change it. */ msrGlcpSysRstpll = rdmsr(GLCP_SYS_RSTPLL); msrGlcpSysRstpll.lo &= ~RSTPPL_LOWER_BYPASS_SET; wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // If the "we've already been here" flag is set, don't reconfigure the pll + /* If the "we've already been here" flag is set, don't reconfigure the pll */ if ( !(msrGlcpSysRstpll.lo & PLLCHECK_COMPLETED ) ) - { // we haven't configured the PLL; do it now + { /* we haven't configured the PLL; do it now */ - // Store PCI33(0)/66(1), SDR(0)/DDR(1), and CRT(0)/TFT(1) in upper esi to get to the - // correct Strap Table. + /* Store PCI33(0)/66(1), SDR(0)/DDR(1), and CRT(0)/TFT(1) in upper esi to get to the */ + /* correct Strap Table. */ post_code(POST_PLL_INIT); - // configure for DDR + /* configure for DDR */ msrGlcpSysRstpll.lo &= ~(1 << RSTPPL_LOWER_SDRMODE_SHIFT); wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // Use Manual settings - // UseManual: + /* Use Manual settings */ + /* UseManual: */ post_code(POST_PLL_MANUAL); - // DIV settings manually entered. - // ax = VDIV, upper eax = MDIV, upper ecx = FbDIV - // use gs and fs since we don't need them. + /* DIV settings manually entered. */ + /* ax = VDIV, upper eax = MDIV, upper ecx = FbDIV */ + /* use gs and fs since we don't need them. */ - // ProgramClocks: - // ax = VDIV, upper eax = MDIV, upper ecx = FbDIV - // move everything into ebx - // VDIV + /* ProgramClocks: */ + /* ax = VDIV, upper eax = MDIV, upper ecx = FbDIV */ + /* move everything into ebx */ + /* VDIV */ MDIV_VDIV_FBDIV = ((DEFAULT_VDIV - 2) << RSTPLL_UPPER_VDIV_SHIFT); - // MDIV + /* MDIV */ MDIV_VDIV_FBDIV |= ((DEFAULT_MDIV - 2) << RSTPLL_UPPER_MDIV_SHIFT); - // FbDIV + /* FbDIV */ MDIV_VDIV_FBDIV |= (plldiv2fbdiv[DEFAULT_FBDIV] << RSTPLL_UPPER_FBDIV_SHIFT); - // write GLCP_SYS_RSTPPL (GLCP reg 0x14) with clock values + /* write GLCP_SYS_RSTPPL (GLCP reg 0x14) with clock values */ msrGlcpSysRstpll.lo &= ~(1 << RSTPPL_LOWER_SDRMODE_SHIFT); wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); msrGlcpSysRstpll.hi = MDIV_VDIV_FBDIV; wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // Set Reset, LockWait, and SW flag - // DoReset: + /* Set Reset, LockWait, and SW flag */ + /* DoReset: */ - // CheckSemiSync proc - // Check for Semi-Sync in GeodeLink and CPU. - // We need to do this here since the strap settings don't account for these bits. + /* CheckSemiSync proc */ + /* Check for Semi-Sync in GeodeLink and CPU. */ + /* We need to do this here since the strap settings don't account for these bits. */ SyncBits = 0; // store the sync bits in up ebx - // Check for Bypass mode. + /* Check for Bypass mode. */ if (msrGlcpSysRstpll.lo & RSTPPL_LOWER_BYPASS_SET) { - // If we are in BYPASS PCI may or may not be sync'd but CPU and GeodeLink will. + /* If we are in BYPASS PCI may or may not be sync'd but CPU and GeodeLink will. */ SyncBits |= RSTPPL_LOWER_CPU_SEMI_SYNC_SET; } else { - // CheckPCIsync: - // If FBdiv/Mdiv is evenly divisible then set the PCI semi-sync. FB is always greater - // look up the real divider... if we get a 0 we have serious problems + /* CheckPCIsync: */ + /* If FBdiv/Mdiv is evenly divisible then set the PCI semi-sync. FB is always greater */ + /* look up the real divider... if we get a 0 we have serious problems */ if ( !(fbdiv2plldiv[((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_FBDIV_SHIFT) & 0x3f)] % (((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_MDIV_SHIFT) & 0x0F) + 2)) ) { SyncBits |= RSTPPL_LOWER_PCI_SEMI_SYNC_SET; } - // CheckCPUSync: - // If Vdiv/Mdiv is evenly divisible then set the CPU semi-sync. - // CPU is always greater or equal. + /* CheckCPUSync: */ + /* If Vdiv/Mdiv is evenly divisible then set the CPU semi-sync. */ + /* CPU is always greater or equal. */ if (!((((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_MDIV_SHIFT) & 0x07) + 2) % (((msrGlcpSysRstpll.hi >> RSTPLL_UPPER_VDIV_SHIFT) & 0x0F) + 2))) { @@ -219,29 +248,29 @@ static void pll_reset(void) } - // SetSync: + /* SetSync: */ msrGlcpSysRstpll.lo &= ~(RSTPPL_LOWER_PCI_SEMI_SYNC_SET | RSTPPL_LOWER_CPU_SEMI_SYNC_SET); msrGlcpSysRstpll.lo |= SyncBits; wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // CheckSemiSync endp + /* CheckSemiSync endp */ - // now we do the reset - // Set hold count to 99 (063h) + /* now we do the reset */ + /* Set hold count to 99 (063h) */ msrGlcpSysRstpll.lo &= ~(0x0FF << RSTPPL_LOWER_HOLD_COUNT_SHIFT); msrGlcpSysRstpll.lo |= (0x0DE << RSTPPL_LOWER_HOLD_COUNT_SHIFT); msrGlcpSysRstpll.lo |= PLLCHECK_COMPLETED; // Say we are done wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // Don't want to use LOCKWAIT + /* Don't want to use LOCKWAIT */ msrGlcpSysRstpll.lo |= (RSTPPL_LOWER_PLL_RESET_SET + RSTPPL_LOWER_PD_SET); msrGlcpSysRstpll.lo |= RSTPPL_LOWER_CHIP_RESET_SET; wrmsr(GLCP_SYS_RSTPLL, msrGlcpSysRstpll); - // You should never get here..... The chip has reset. + /* You should never get here..... The chip has reset. */ post_code(POST_PLL_RESET_FAIL); while (1); - } // we haven't configured the PLL; do it now + } /* we haven't configured the PLL; do it now */ } // End of Goodrich version of pll_reset |