/* * This file is part of the LinuxBIOS project. * * Copyright (C) 2005-2007 Advanced Micro Devices, Inc. * Copyright (C) 2008 Carl-Daniel Hailfinger * * 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 * the Free Software Foundation; version 2 of the License. * * 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 */ #define CacheSize DCACHE_RAM_SIZE #define CacheBase (0xd0000 - CacheSize) /* leave some space for global variable to pass to RAM stage */ #define GlobalVarSize DCACHE_RAM_GLOBAL_VAR_SIZE #if CAR_FAM10 == 1 #define CacheSizeAPStack 0x400 /* 1K */ #endif #include #include /* Save the BIST result */ movl %eax, %ebp /*for normal part %ebx already contain cpu_init_detected from fallback call */ cache_as_ram_setup: movb $0xA0, %al outb %al, $0x80 /* hope we can skip the double set for normal part */ #if ((HAVE_FAILOVER_BOOT == 1) && (USE_FAILOVER_IMAGE == 1)) || ((HAVE_FAILOVER_BOOT == 0) && (USE_FALLBACK_IMAGE == 1)) /* check if cpu_init_detected */ movl $MTRRdefType_MSR, %ecx rdmsr andl $(1 << 11), %eax movl %eax, %ebx /* We store the status */ #if CAR_FAM10 == 1 /* for GH, CAR need to set DRAM Base/Limit Registers to direct that to node0 */ /* Only BSP needed, for other nodes set during HT/memory init. */ /* So we need to check if it is BSP */ movl $0x1b, %ecx rdmsr bt $8, %eax /*BSC */ jnc CAR_FAM10_out /* Enable RT tables on BSP */ movl $0x8000c06c, %eax movw $0xcf8, %dx outl %eax, %dx addw $4, %dx inl %dx, %eax btr $0, %eax outl %eax, %dx /* Setup temporary DRAM map: [0,16M) bit 0-23 */ movl $0x8000c144, %eax movw $0xcf8, %dx outl %eax, %dx addw $4, %dx movl $0, %eax outl %eax, %dx movl $0x8000c140, %eax movw $0xcf8, %dx outl %eax, %dx addw $4, %dx movl $3, %eax outl %eax, %dx CAR_FAM10_out: #endif #if CAR_FAM10 == 1 /* Errata 193: Disable clean copybacks to L3 cache to allow cached ROM. Re-enable it in after RAM is initialized and before CAR is disabled */ movl $0xc001102a, %ecx rdmsr bts $15, %eax wrmsr #endif /* Set MtrrFixDramModEn for clear fixed mtrr */ enable_fixed_mtrr_dram_modify: movl $SYSCFG_MSR, %ecx rdmsr andl $(~(SYSCFG_MSR_MtrrFixDramEn | SYSCFG_MSR_MtrrVarDramEn)), %eax orl $SYSCFG_MSR_MtrrFixDramModEn, %eax wrmsr /* Clear all MTRRs */ xorl %edx, %edx movl $fixed_mtrr_msr, %esi clear_fixed_var_mtrr: lodsl (%esi), %eax testl %eax, %eax jz clear_fixed_var_mtrr_out movl %eax, %ecx xorl %eax, %eax wrmsr jmp clear_fixed_var_mtrr clear_fixed_var_mtrr_out: /* 0x06 is the WB IO type for a given 4k segment. * 0x1e is the MEM IO type for a given 4k segment (K10 and above). * segs is the number of 4k segments in the area of the particular * register we want to use for CAR. * reg is the register where the IO type should be stored. */ .macro extractmask segs, reg .if \segs <= 0 /* The xorl here is superfluous because at the point of first execution * of this macro, %eax and %edx are cleared. Later invocations of this * macro will have a monotonically increasing segs parameter. */ xorl \reg, \reg #if CAR_FAM10 == 1 .elseif \segs == 1 movl $0x1e000000, \reg /* WB MEM type */ .elseif \segs == 2 movl $0x1e1e0000, \reg /* WB MEM type */ .elseif \segs == 3 movl $0x1e1e1e00, \reg /* WB MEM type */ .elseif \segs >= 4 movl $0x1e1e1e1e, \reg /* WB MEM type */ #else .elseif \segs == 1 movl $0x06000000, \reg /* WB IO type */ .elseif \segs == 2 movl $0x06060000, \reg /* WB IO type */ .elseif \segs == 3 movl $0x06060600, \reg /* WB IO type */ .elseif \segs >= 4 movl $0x06060606, \reg /* WB IO type */ #endif .endif .endm /* size is the cache size in bytes we want to use for CAR. * windowoffset is the 32k-aligned window into CAR size */ .macro simplemask carsize, windowoffset .set gas_bug_workaround,(((\carsize - \windowoffset) / 0x1000) - 4) extractmask gas_bug_workaround, %eax .set gas_bug_workaround,(((\carsize - \windowoffset) / 0x1000)) extractmask gas_bug_workaround, %edx /* Without the gas bug workaround, the entire macro would consist only of the * two lines below. extractmask (((\carsize - \windowoffset) / 0x1000) - 4), %eax extractmask (((\carsize - \windowoffset) / 0x1000)), %edx */ .endm #if CacheSize > 0x10000 #error Invalid CAR size, must be at most 64k. #endif #if CacheSize < 0x1000 #error Invalid CAR size, must be at least 4k. This is a processor limitation. #endif #if (CacheSize & (0x1000 - 1)) #error Invalid CAR size, is not a multiple of 4k. This is a processor limitation. #endif #if CacheSize > 0x8000 /* enable caching for 32K-64K using fixed mtrr */ movl $0x268, %ecx /* fix4k_c0000*/ simplemask CacheSize, 0x8000 wrmsr #endif /* enable caching for 0-32K using fixed mtrr */ movl $0x269, %ecx /* fix4k_c8000*/ simplemask CacheSize, 0 wrmsr /* enable memory access for first MBs using top_mem */ movl $TOP_MEM, %ecx xorl %edx, %edx movl $(((CONFIG_LB_MEM_TOPK << 10) + TOP_MEM_MASK) & ~TOP_MEM_MASK) , %eax wrmsr #endif /* USE_FAILOVER_IMAGE == 1*/ #if ((HAVE_FAILOVER_BOOT == 1) && (USE_FAILOVER_IMAGE == 0)) || ((HAVE_FAILOVER_BOOT == 0) && (USE_FALLBACK_IMAGE == 0)) /* disable cache */ movl %cr0, %eax orl $(1 << 30),%eax movl %eax, %cr0 #endif #if defined(XIP_ROM_SIZE) && defined(XIP_ROM_BASE) /* enable write base caching so we can do execute in place * on the flash rom. */ movl $0x202, %ecx xorl %edx, %edx movl $(XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax wrmsr movl $0x203, %ecx movl $((1 << (CPU_ADDR_BITS - 32)) - 1), %edx /* AMD 40 bit for K8, 48 bit for GH */ movl $(~(XIP_ROM_SIZE - 1) | 0x800), %eax wrmsr #endif /* XIP_ROM_SIZE && XIP_ROM_BASE */ #if ((HAVE_FAILOVER_BOOT == 1) && (USE_FAILOVER_IMAGE == 1)) || ((HAVE_FAILOVER_BOOT == 0) && (USE_FALLBACK_IMAGE == 1)) /* Set the default memory type and enable fixed and variable MTRRs */ movl $MTRRdefType_MSR, %ecx xorl %edx, %edx /* Enable Variable and Fixed MTRRs */ movl $0x00000c00, %eax wrmsr /* Enable the MTRRs and IORRs in SYSCFG */ movl $SYSCFG_MSR, %ecx rdmsr orl $(SYSCFG_MSR_MtrrVarDramEn | SYSCFG_MSR_MtrrFixDramEn), %eax wrmsr #endif movb $0xA1, %al outb %al, $0x80 /* enable cache */ movl %cr0, %eax andl $0x9fffffff, %eax movl %eax, %cr0 #if CAR_FAM10 == 1 /* So we need to check if it is BSP */ movl $0x1b, %ecx rdmsr bt $8, %eax /*BSC */ jnc CAR_FAM10_ap #endif movb $0xA2, %al outb %al, $0x80 #if ((HAVE_FAILOVER_BOOT == 1) && (USE_FAILOVER_IMAGE == 1)) || ((HAVE_FAILOVER_BOOT == 0) && (USE_FALLBACK_IMAGE == 1)) /* Read the range with lodsl*/ cld movl $CacheBase, %esi movl $(CacheSize >> 2), %ecx rep lodsl /* Clear the range */ movl $CacheBase, %edi movl $(CacheSize >> 2), %ecx xorl %eax, %eax rep stosl #endif /*USE_FAILOVER_IMAGE == 1*/ /* set up the stack pointer */ movl $(CacheBase + CacheSize - GlobalVarSize), %eax movl %eax, %esp movb $0xA3, %al outb %al, $0x80 #if CAR_FAM10 == 1 jmp CAR_FAM10_ap_out CAR_FAM10_ap: /* need to set stack pointer for AP */ /* it will be from CacheBase + (CacheSize - GlobalVarSize)/2 - (NodeID<