-/* by yhlu 6.2005 */
-/* We will use 4K bytes only */
-#define CacheSize DCACHE_RAM_SIZE
+/*
+ * This file is part of the coreboot 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 CONFIG_DCACHE_RAM_SIZE
#define CacheBase (0xd0000 - CacheSize)
+/* leave some space for global variable to pass to RAM stage */
+#define GlobalVarSize CONFIG_DCACHE_RAM_GLOBAL_VAR_SIZE
+
+/* for CAR with FAM10 */
+#define CacheSizeAPStack 0x400 /* 1K */
+
+#define MSR_FAM10 0xC001102A
+
+#define jmp_if_k8(x) comisd %xmm2, %xmm1; jb x
+
+#define CPUID_MASK 0x0ff00f00
+#define CPUID_VAL_FAM10_ROTATED 0x0f000010
+
#include <cpu/x86/mtrr.h>
#include <cpu/amd/mtrr.h>
+/*
+ XMM map:
+ xmm1: cpu family
+ xmm2: fam10 comparison value
+ xmm3: backup ebx
+*/
/* Save the BIST result */
- movl %eax, %ebp
+ 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
+
+ /* enable SSE */
+ movl %cr4, %eax
+ orl $(3<<9), %eax
+ movl %eax, %cr4
+
+ /* figure out cpu family */
+ cvtsi2sd %ebx, %xmm3
+ movl $0x01, %eax
+ cpuid
+ /* base family is bits 8..11, extended family is bits 20..27 */
+ andl $CPUID_MASK, %eax
+ /* reorder bits for easier comparison by value */
+ roll $0x10, %eax
+ cvtsi2sd %eax, %xmm1
+ movl $CPUID_VAL_FAM10_ROTATED, %eax
+ cvtsi2sd %eax, %xmm2
+ cvtsd2si %xmm3, %ebx
-CacheAsRam:
/* hope we can skip the double set for normal part */
-#if USE_FALLBACK_IMAGE == 1
-
- /* Set MtrrFixDramModEn for clear fixed mtrr */
- xorl %eax, %eax # clear %eax and %edx
- xorl %edx, %edx
+#if ((CONFIG_HAVE_FAILOVER_BOOT == 1) && (CONFIG_USE_FAILOVER_IMAGE == 1)) || ((CONFIG_HAVE_FAILOVER_BOOT == 0) && (CONFIG_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 */
+
+ jmp_if_k8(CAR_FAM10_out_post_errata)
+
+ /* 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:
+
+ /* 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
+
+ /* Erratum 343, RevGuide for Fam10h, Pub#41322 Rev. 3.33 */
+
+ /* read-address has to be stored in the ecx register */
+ movl $MSR_FAM10, %ecx
+
+ /* execute special read command for msr-register. Result is then in the EDX:EAX-registers (MSBs in EDX) */
+ rdmsr
+
+ /* Set bit 35 to 1 in EAX */
+ bts $35, %eax
+
+ /* write back the modified register EDX:EAX to the MSR specified in ECX */
+ wrmsr
+
+ /* Erratum 343 end */
+
+CAR_FAM10_out_post_errata:
+
+ /* Set MtrrFixDramModEn for clear fixed mtrr */
enable_fixed_mtrr_dram_modify:
movl $SYSCFG_MSR, %ecx
rdmsr
- andl $(~(SYSCFG_MSR_MtrrFixDramEn|SYSCFG_MSR_MtrrVarDramEn)), %eax
+ andl $(~(SYSCFG_MSR_MtrrFixDramEn | SYSCFG_MSR_MtrrVarDramEn)), %eax
orl $SYSCFG_MSR_MtrrFixDramModEn, %eax
wrmsr
- /* 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
+ /* Clear all MTRRs */
+ xorl %edx, %edx
+ movl $fixed_mtrr_msr, %esi
- /*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
+ lodsl (%esi), %eax
+ testl %eax, %eax
+ jz clear_fixed_var_mtrr_out
- movl %eax, %ecx
- xorl %eax, %eax
- wrmsr
+ movl %eax, %ecx
+ xorl %eax, %eax
+ wrmsr
- jmp clear_fixed_var_mtrr
+ jmp clear_fixed_var_mtrr
clear_fixed_var_mtrr_out:
- /* Enable the MTRRs and IORRs in SYSCFG */
- movl $SYSCFG_MSR, %ecx
- rdmsr
- orl $(SYSCFG_MSR_MtrrVarDramEn | SYSCFG_MSR_MtrrFixDramEn), %eax
- wrmsr
-
-#if 1
-#if CacheSize == 0x10000
- /* enable caching for 64K using fixed mtrr */
- movl $0x268, %ecx /* fix4k_c0000*/
- movl $0x06060606, %eax /* WB IO type */
- movl %eax, %edx
- wrmsr
- movl $0x269, %ecx
- wrmsr
+/* 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
+.else
+ jmp_if_k8(1f)
+
+.if \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 */
+.endif
+ jmp 2f
+1:
+.if \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
+2:
+.endif /* if \segs <= 0 */
+.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 using fixed mtrr */
- movl $0x269, %ecx /* fix4k_c8000*/
- movl $0x06060606, %eax /* WB IO type */
- movl %eax, %edx
+#if CacheSize > 0x8000
+ /* enable caching for 32K-64K using fixed mtrr */
+ movl $0x268, %ecx /* fix4k_c0000*/
+ simplemask CacheSize, 0x8000
wrmsr
#endif
- /* enable caching for 16K/8K/4K using fixed mtrr */
- movl $0x269, %ecx /* fix4k_cc000*/
-#if CacheSize == 0x4000
- movl $0x06060606, %edx /* WB IO type */
-#endif
-#if CacheSize == 0x2000
- movl $0x06060000, %edx /* WB IO type */
-#endif
-#if CacheSize == 0x1000
- movl $0x06000000, %edx /* WB IO type */
-#endif
- xorl %eax, %eax
+ /* enable caching for 0-32K using fixed mtrr */
+ movl $0x269, %ecx /* fix4k_c8000*/
+ simplemask CacheSize, 0
wrmsr
-#else
- /* enable caching for 64K using variable mtrr */
- movl $0x200, %ecx
- xorl %edx, %edx
- movl $(CacheBase | MTRR_TYPE_WRBACK), %eax
- wrmsr
-
- movl $0x201, %ecx
- movl $0x0000000f, %edx /* AMD 40 bit 0xff*/
- movl $((~((CacheBase + CacheSize) - 1)) | 0x800), %eax
- wrmsr
-
- /* make it to be IO by clearing RD Dram and WR Dram */
- movl $IORR0_BASE, %ecx
- xorl %edx, %edx
- movl $CacheBase, %eax /* bit 3, and bit 4 = 0 mean clear RD ram and WR ram */
- wrmsr
-
- movl $IORR0_MASK, %ecx
- movl $0x000000ff, %edx
- movl $(~((CacheBase + CacheSize) - 1) | 0x800), %eax
- wrmsr
+ /* enable memory access for first MBs using top_mem */
+ movl $TOP_MEM, %ecx
+ xorl %edx, %edx
+ movl $(((CONFIG_RAMTOP) + TOP_MEM_MASK) & ~TOP_MEM_MASK) , %eax
+ wrmsr
+#endif /* CONFIG_USE_FAILOVER_IMAGE == 1*/
+
+#if ((CONFIG_HAVE_FAILOVER_BOOT == 1) && (CONFIG_USE_FAILOVER_IMAGE == 0)) || ((CONFIG_HAVE_FAILOVER_BOOT == 0) && (CONFIG_USE_FALLBACK_IMAGE == 0))
+ /* disable cache */
+ movl %cr0, %eax
+ orl $(0x1 << 30), %eax
+ movl %eax, %cr0
+
#endif
- /* enable memory access for 0 - 1MB using top_mem */
- movl $TOP_MEM, %ecx
- xorl %edx, %edx
- movl $(((CONFIG_LB_MEM_TOPK << 10) + TOP_MEM_MASK) & ~TOP_MEM_MASK) , %eax
- wrmsr
-#else
- /* disable cache */
- movl %cr0, %eax
- orl $(0x1<<30),%eax
- movl %eax, %cr0
-
-#endif /* USE_FALLBACK_IMAGE == 1*/
-
-#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 $0x0000000f, %edx
- movl $(~(XIP_ROM_SIZE - 1) | 0x800), %eax
- wrmsr
-#endif /* XIP_ROM_SIZE && XIP_ROM_BASE */
-
- /* enable cache */
- movl %cr0, %eax
- andl $0x9fffffff,%eax
- movl %eax, %cr0
-
-#if USE_FALLBACK_IMAGE == 1
-
-
- /* Read the range with lodsl*/
- movl $(CacheBase+CacheSize-4), %esi
- std
- movl $(CacheSize>>2), %ecx
- rep lodsl
- /* Clear the range */
- movl $(CacheBase+CacheSize-4), %edi
- movl $(CacheSize>>2), %ecx
- xorl %eax, %eax
- rep stosl
-
-#if 0
- /* check the cache as ram */
- movl $CacheBase, %esi
- movl $(CacheSize>>2), %ecx
-.xin1:
- movl %esi, %eax
- movl %eax, (%esi)
- movl $0x1000, %edx
- movb %ah, %al
-.testx1:
- outb %al, $0x80
- decl %edx
- jnz .testx1
-
- movl (%esi), %eax
- cmpb 0xff, %al
- je .xin2 /* dont show */
- movl $0x1000, %edx
-.testx2:
- outb %al, $0x80
- decl %edx
- jnz .testx2
-
-.xin2: decl %ecx
- je .xout1
- add $4, %esi
- jmp .xin1
-.xout1:
+#if defined(CONFIG_XIP_ROM_SIZE) && defined(CONFIG_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 $(CONFIG_XIP_ROM_BASE | MTRR_TYPE_WRBACK), %eax
+ wrmsr
+
+ movl $0x203, %ecx
+ movl $0xff, %edx /* (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1 for K8 (CONFIG_CPU_ADDR_BITS = 40) */
+ jmp_if_k8(wbcache_post_fam10_setup)
+ movl $0xffff, %edx /* (1 << (CONFIG_CPU_ADDR_BITS - 32)) - 1 for FAM10 (CONFIG_CPU_ADDR_BITS = 48) */
+wbcache_post_fam10_setup:
+ movl $(~(CONFIG_XIP_ROM_SIZE - 1) | 0x800), %eax
+ wrmsr
+#endif /* CONFIG_XIP_ROM_SIZE && CONFIG_XIP_ROM_BASE */
+
+#if ((CONFIG_HAVE_FAILOVER_BOOT == 1) && (CONFIG_USE_FAILOVER_IMAGE == 1)) || ((CONFIG_HAVE_FAILOVER_BOOT == 0) && (CONFIG_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
-#endif /*USE_FALLBACK_IMAGE == 1*/
+ movb $0xA1, %al
+ outb %al, $0x80
+
+ /* enable cache */
+ movl %cr0, %eax
+ andl $0x9fffffff, %eax
+ movl %eax, %cr0
+
+ jmp_if_k8(fam10_end_part1)
+
+ /* So we need to check if it is BSP */
+ movl $0x1b, %ecx
+ rdmsr
+ bt $8, %eax /*BSC */
+ jnc CAR_FAM10_ap
+fam10_end_part1:
+
+ movb $0xA2, %al
+ outb %al, $0x80
+
+#if ((CONFIG_HAVE_FAILOVER_BOOT == 1) && (CONFIG_USE_FAILOVER_IMAGE == 1)) || ((CONFIG_HAVE_FAILOVER_BOOT == 0) && (CONFIG_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 /*CONFIG_USE_FAILOVER_IMAGE == 1*/
+
+ /* set up the stack pointer */
+ movl $(CacheBase + CacheSize - GlobalVarSize), %eax
+ movl %eax, %esp
+
+ movb $0xA3, %al
+ outb %al, $0x80
+
+ jmp CAR_FAM10_ap_out
+CAR_FAM10_ap:
+ /* need to set stack pointer for AP */
+ /* it will be from CacheBase + (CacheSize - GlobalVarSize)/2 - (NodeID<<CoreIDbits + CoreID) * CacheSizeAPStack*/
+ /* So need to get the NodeID and CoreID at first */
+ /* If NB_CFG bit 54 is set just use initial apicid, otherwise need to reverse it */
+
+ /* store our init detected */
+ movl %ebx, %esi
+
+ /* get the coreid bits at first */
+ movl $0x80000008, %eax
+ cpuid
+ shrl $12, %ecx
+ andl $0x0f, %ecx
+ movl %ecx, %edi
+
+ /* get the initial apic id */
+ movl $1, %eax
+ cpuid
+ shrl $24, %ebx
+
+ /* get the nb cfg bit 54 */
+ movl $0xc001001f, %ecx /* NB_CFG_MSR */
+ rdmsr
+ movl %edi, %ecx /* CoreID bits */
+ bt $(54-32), %edx
+ jc roll_cfg
+ rolb %cl, %bl
+roll_cfg:
+
+ /* calculate stack pointer */
+ movl $CacheSizeAPStack, %eax
+ mull %ebx
+ movl $(CacheBase + (CacheSize - GlobalVarSize)/2), %esp
+ subl %eax, %esp
+
+ /* retrive init detected */
+ movl %esi, %ebx
+
+ movb $0xA4, %al
+ outb %al, $0x80
- movl $(CacheBase+CacheSize-4), %eax
- movl %eax, %esp
+CAR_FAM10_ap_out:
+ movb $0xA5, %al
+ outb %al, $0x80
+
+ /* disable SSE */
+ movl %cr4, %eax
+ andl $~(3<<9), %eax
+ movl %eax, %cr4
/* Restore the BIST result */
- movl %ebp, %eax
+ movl %ebp, %eax
+
/* We need to set ebp ? No need */
movl %esp, %ebp
- pushl %eax /* bist */
- call amd64_main
+ pushl %ebx /* init detected */
+ pushl %eax /* bist */
+ call cache_as_ram_main
/* We will not go back */
-fixed_mtrr_msr:
- .long 0x250, 0x258, 0x259
- .long 0x268, 0x269, 0x26A
- .long 0x26B, 0x26C, 0x26D
- .long 0x26E, 0x26F
-var_mtrr_msr:
- .long 0x200, 0x201, 0x202, 0x203
- .long 0x204, 0x205, 0x206, 0x207
- .long 0x208, 0x209, 0x20A, 0x20B
- .long 0x20C, 0x20D, 0x20E, 0x20F
-var_iorr_msr:
- .long 0xC0010016, 0xC0010017, 0xC0010018, 0xC0010019
+ movb $0xAF, %al /* Should never see this postcode */
+ outb %al, $0x80
+
+fixed_mtrr_msr:
+ .long 0x250, 0x258, 0x259
+ .long 0x268, 0x269, 0x26A
+ .long 0x26B, 0x26C, 0x26D
+ .long 0x26E, 0x26F
+var_mtrr_msr:
+ .long 0x200, 0x201, 0x202, 0x203
+ .long 0x204, 0x205, 0x206, 0x207
+ .long 0x208, 0x209, 0x20A, 0x20B
+ .long 0x20C, 0x20D, 0x20E, 0x20F
+var_iorr_msr:
+ .long 0xC0010016, 0xC0010017, 0xC0010018, 0xC0010019
mem_top:
- .long 0xC001001A, 0xC001001D
- .long 0x000 /* NULL, end of table */
-.CacheAsRam_out:
+ .long 0xC001001A, 0xC001001D
+ .long 0x000 /* NULL, end of table */
+
+cache_as_ram_setup_out:
projects / coreboot.git / blobdiff