Vladimir Serbinenko (phcoder@gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10355
-gerrit
commit 77717d0c57e5158f747a79c763ebff012cac9573 Author: Vladimir Serbinenko phcoder@gmail.com Date: Thu May 28 21:09:31 2015 +0200
smm: Merge configs SMM_MODULES and SMM_TSEG
SMM_TSEG now implies SMM_MODULES and SMM_MODULES can't be used without SMM_TSEG
Remove some newly dead code while on it.
Change-Id: I2e1818245170b1e0abbd853bedf856cec83b92f2 Signed-off-by: Vladimir Serbinenko phcoder@gmail.com --- src/cpu/intel/fsp_model_206ax/Kconfig | 1 - src/cpu/intel/haswell/Kconfig | 1 - src/cpu/intel/model_2065x/Kconfig | 1 - src/cpu/intel/model_206ax/Kconfig | 1 - src/cpu/x86/Kconfig | 11 +- src/cpu/x86/smm/Makefile.inc | 14 +- src/cpu/x86/smm/smihandler.c | 11 -- src/cpu/x86/smm/smmhandler_tseg.S | 318 ---------------------------------- src/include/cpu/x86/smm.h | 13 +- src/soc/intel/baytrail/Kconfig | 1 - src/soc/intel/braswell/Kconfig | 1 - src/soc/intel/broadwell/Kconfig | 1 - src/soc/intel/fsp_baytrail/Kconfig | 1 - 13 files changed, 9 insertions(+), 366 deletions(-)
diff --git a/src/cpu/intel/fsp_model_206ax/Kconfig b/src/cpu/intel/fsp_model_206ax/Kconfig index b1a5e09..3280f77 100644 --- a/src/cpu/intel/fsp_model_206ax/Kconfig +++ b/src/cpu/intel/fsp_model_206ax/Kconfig @@ -37,7 +37,6 @@ config CPU_SPECIFIC_OPTIONS select SSE2 select UDELAY_LAPIC select SMM_TSEG - select SMM_MODULES select SUPPORT_CPU_UCODE_IN_CBFS if HAVE_FSP_BIN select PARALLEL_CPU_INIT select TSC_SYNC_MFENCE diff --git a/src/cpu/intel/haswell/Kconfig b/src/cpu/intel/haswell/Kconfig index f284807..779f1d6 100644 --- a/src/cpu/intel/haswell/Kconfig +++ b/src/cpu/intel/haswell/Kconfig @@ -19,7 +19,6 @@ config CPU_SPECIFIC_OPTIONS select UDELAY_TSC select TSC_CONSTANT_RATE select SMM_TSEG - select SMM_MODULES select RELOCATABLE_MODULES select RELOCATABLE_RAMSTAGE select SUPPORT_CPU_UCODE_IN_CBFS diff --git a/src/cpu/intel/model_2065x/Kconfig b/src/cpu/intel/model_2065x/Kconfig index 946825b..4a85f09 100644 --- a/src/cpu/intel/model_2065x/Kconfig +++ b/src/cpu/intel/model_2065x/Kconfig @@ -15,7 +15,6 @@ config CPU_SPECIFIC_OPTIONS select UDELAY_TSC select TSC_CONSTANT_RATE select SMM_TSEG - select SMM_MODULES select SUPPORT_CPU_UCODE_IN_CBFS select PARALLEL_CPU_INIT #select AP_IN_SIPI_WAIT diff --git a/src/cpu/intel/model_206ax/Kconfig b/src/cpu/intel/model_206ax/Kconfig index 1ecc911..490849b 100644 --- a/src/cpu/intel/model_206ax/Kconfig +++ b/src/cpu/intel/model_206ax/Kconfig @@ -16,7 +16,6 @@ config CPU_SPECIFIC_OPTIONS select SSE2 select UDELAY_LAPIC select SMM_TSEG - select SMM_MODULES select SUPPORT_CPU_UCODE_IN_CBFS select PARALLEL_CPU_INIT #select AP_IN_SIPI_WAIT diff --git a/src/cpu/x86/Kconfig b/src/cpu/x86/Kconfig index 21a0fac..9e5f615 100644 --- a/src/cpu/x86/Kconfig +++ b/src/cpu/x86/Kconfig @@ -79,21 +79,12 @@ config LOGICAL_CPUS config SMM_TSEG bool default n - -config SMM_MODULES - bool - default n - depends on HAVE_SMI_HANDLER select RELOCATABLE_MODULES - help - If SMM_MODULES is selected then SMM handlers are built as modules. - A SMM stub along with a SMM loader/relocator. All the handlers are - written in C with stub being the only assembly.
config SMM_MODULE_HEAP_SIZE hex default 0x4000 - depends on SMM_MODULES + depends on SMM_TSEG help This option determines the size of the heap within the SMM handler modules. diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc index 9f8f1d2..60b0388 100644 --- a/src/cpu/x86/smm/Makefile.inc +++ b/src/cpu/x86/smm/Makefile.inc @@ -34,7 +34,7 @@ smm-c-deps:=$$(OPTION_TABLE_H) $(obj)/cpu/x86/smm/smm.o: $$(smm-objs) $(COMPILER_RT_smm) $(LD_smm) -nostdlib -r -o $@ $(COMPILER_RT_FLAGS_smm) --whole-archive --start-group $(smm-objs) --no-whole-archive $(COMPILER_RT_smm) --end-group
-ifeq ($(CONFIG_SMM_MODULES),y) +ifeq ($(CONFIG_SMM_TSEG),y)
smmstub-y += smm_stub.S
@@ -79,7 +79,7 @@ else cd $(dir $@); $(OBJCOPY_smm) -I binary $(notdir $<) -O elf64-x86_64 -B x86_64 $(notdir $@) endif
-else # CONFIG_SMM_MODULES +else # CONFIG_SMM_TSEG
$(obj)/cpu/x86/smm/smm_wrap: $(obj)/cpu/x86/smm/smm.o $(src)/cpu/x86/smm/$(SMM_LDSCRIPT) $(LD_smm) $(SMM_LDFLAGS) -nostdlib -nostartfiles --gc-sections -static -o $(obj)/cpu/x86/smm/smm.elf -T $(src)/cpu/x86/smm/$(SMM_LDSCRIPT) $(obj)/cpu/x86/smm/smm.o @@ -101,19 +101,11 @@ ifeq ($(CONFIG_HAVE_SMI_HANDLER),y) ramstage-srcs += $(obj)/cpu/x86/smm/smm_wrap.manual endif
-# Use TSEG specific entry point and linker script -ifeq ($(CONFIG_SMM_TSEG),y) -smm-y += smmhandler_tseg.S -smm-c-ccopts += -fpic -SMM_LDFLAGS := -pie -SMM_LDSCRIPT := smm_tseg.ld -else smm-y += smmhandler.S SMM_LDFLAGS := SMM_LDSCRIPT := smm.ld -endif
smm-y += smihandler.c
-endif # CONFIG_SMM_MODULES +endif # CONFIG_SMM_TSEG diff --git a/src/cpu/x86/smm/smihandler.c b/src/cpu/x86/smm/smihandler.c index 2387f6e..9c282c3 100644 --- a/src/cpu/x86/smm/smihandler.c +++ b/src/cpu/x86/smm/smihandler.c @@ -29,7 +29,6 @@
static int do_driver_init = 1;
-#if !CONFIG_SMM_TSEG /* TSEG handler locks in assembly */ typedef enum { SMI_LOCKED, SMI_UNLOCKED } smi_semaphore;
/* SMI multiprocessing semaphore */ @@ -61,7 +60,6 @@ void smi_release_lock(void) : "eax" ); } -#endif
#define LAPIC_ID 0xfee00020 static inline __attribute__((always_inline)) unsigned long nodeid(void) @@ -129,12 +127,6 @@ void smi_handler(u32 smm_revision) smm_state_save_area_t state_save; u32 smm_base = 0xa0000; /* ASEG */
-#if CONFIG_SMM_TSEG - /* Update global variable TSEG base */ - if (!smi_get_tseg_base()) - return; - smm_base = smi_get_tseg_base(); -#else /* Are we ok to execute the handler? */ if (!smi_obtain_lock()) { /* For security reasons we don't release the other CPUs @@ -147,7 +139,6 @@ void smi_handler(u32 smm_revision) } return; } -#endif
smi_backup_pci_address();
@@ -204,9 +195,7 @@ void smi_handler(u32 smm_revision)
smi_restore_pci_address();
-#if !CONFIG_SMM_TSEG smi_release_lock(); -#endif
/* De-assert SMI# signal to allow another SMI */ smi_set_eos(); diff --git a/src/cpu/x86/smm/smmhandler_tseg.S b/src/cpu/x86/smm/smmhandler_tseg.S deleted file mode 100644 index 90dd932..0000000 --- a/src/cpu/x86/smm/smmhandler_tseg.S +++ /dev/null @@ -1,318 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2008 coresystems GmbH - * - * 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. - */ - -/* - * +--------------------------------+ - * | SMM Handler C Code | - * +--------------------------------+ 0x14000 - * | SMM Handler Heap | - * +--------------------------------+ 0x10000 - * | Save State Map Node 0 | - * | Save State Map Node 1 | - * | Save State Map Node 2 | - * | Save State Map Node 3 | - * | ... | - * +--------------------------------+ 0xf000 - * | | - * | | - * | EARLY DATA (lock, vectors) | - * +--------------------------------+ 0x8400 - * | SMM Entry Node 0 (+ stack) | - * +--------------------------------+ 0x8000 - * | SMM Entry Node 1 (+ stack) | - * | SMM Entry Node 2 (+ stack) | - * | SMM Entry Node 3 (+ stack) | - * | ... | - * +--------------------------------+ 0x7400 - * | | - * | SMM Handler Assembly Stub | - * | | - * +--------------------------------+ TSEG - * - */ - -#define LAPIC_ID 0xfee00020 -#define SMM_STACK_SIZE (0x400 - 0x10) - -/* Values for the xchg lock */ -#define SMI_LOCKED 0 -#define SMI_UNLOCKED 1 - -#define __PRE_RAM__ -#if CONFIG_NORTHBRIDGE_INTEL_SANDYBRIDGE || CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE || CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE_NATIVE || CONFIG_NORTHBRIDGE_INTEL_SANDYBRIDGE_NATIVE -#include <northbridge/intel/sandybridge/sandybridge.h> -#define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) -#elif CONFIG_NORTHBRIDGE_INTEL_NEHALEM -#include <northbridge/intel/nehalem/nehalem.h> -#define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) -#elif CONFIG_NORTHBRIDGE_INTEL_HASWELL -#include <northbridge/intel/haswell/haswell.h> -#define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) -#else -#if CONFIG_NORTHBRIDGE_INTEL_FSP_SANDYBRIDGE || CONFIG_NORTHBRIDGE_INTEL_FSP_IVYBRIDGE -#include <northbridge/intel/fsp_sandybridge/northbridge.h> -#define TSEG_BAR (DEFAULT_PCIEXBAR | TSEG) -#else -#error "Northbridge must define TSEG_BAR." -#endif -#endif - - - -/* initially SMM is some sort of real mode. Let gcc know - * how to treat the SMM handler stub - */ - -.section ".handler", "a", @progbits - -.code16 - -/** - * SMM code to enable protected mode and jump to the - * C-written function void smi_handler(u32 smm_revision) - * - * All the bad magic is not all that bad after all. - */ -.global smm_handler_start -smm_handler_start: - movl $(TSEG_BAR), %eax /* Get TSEG base from PCIE */ - addr32 movl (%eax), %edx /* Save TSEG_BAR in %edx */ - andl $~1, %edx /* Remove lock bit */ - - /* Obtain lock */ - movl %edx, %ebx - addl $(smm_lock), %ebx - movw $SMI_LOCKED, %ax - addr32 xchg %ax, (%ebx) - cmpw $SMI_UNLOCKED, %ax - - /* Proceed if we got the lock */ - je smm_check_prot_vector - - /* If we did not get the lock, wait for release */ -wait_for_unlock: - pause - addr32 movw (%ebx), %ax - cmpw $SMI_LOCKED, %ax - je wait_for_unlock - rsm - -smm_check_prot_vector: - /* See if we need to adjust protected vector */ - movl %edx, %eax - addl $(smm_prot_vector), %eax - addr32 movl (%eax), %ebx - cmpl $(smm_prot_start), %ebx - jne smm_check_gdt_vector - - /* Adjust vector with TSEG offset */ - addl %edx, %ebx - addr32 movl %ebx, (%eax) - -smm_check_gdt_vector: - /* See if we need to adjust GDT vector */ - movl %edx, %eax - addl $(smm_gdt_vector + 2), %eax - addr32 movl (%eax), %ebx - cmpl $(smm_gdt - smm_handler_start), %ebx - jne smm_load_gdt - - /* Adjust vector with TSEG offset */ - addl %edx, %ebx - addr32 movl %ebx, (%eax) - -smm_load_gdt: - movl $(smm_gdt_vector), %ebx - addl %edx, %ebx /* TSEG base in %edx */ - data32 lgdt (%ebx) - - movl %cr0, %eax - andl $0x1FFAFFD1, %eax /* CD,NW,PG,AM,WP,NE,TS,EM,MP = 0 */ - orl $0x1, %eax /* PE = 1 */ - movl %eax, %cr0 - - /* Enable protected mode */ - movl $(smm_prot_vector), %eax - addl %edx, %eax - data32 ljmp *(%eax) - -.code32 -smm_prot_start: - /* Use flat data segment */ - movw $0x10, %ax - movw %ax, %ds - movw %ax, %es - movw %ax, %ss - movw %ax, %fs - movw %ax, %gs - - /* Get this CPU's LAPIC ID */ - movl $LAPIC_ID, %esi - movl (%esi), %ecx - shr $24, %ecx - - /* calculate stack offset by multiplying the APIC ID - * by 1024 (0x400), and save that offset in ebp. - */ - shl $10, %ecx - movl %ecx, %ebp - - /* We put the stack for each core right above - * its SMM entry point. Core 0 starts at SMM_BASE + 0x8000, - * we spare 0x10 bytes for the jump to be sure. - */ - movl $0x8010, %eax /* core 0 address */ - addl %edx, %eax /* addjust for TSEG */ - subl %ecx, %eax /* subtract offset, see above */ - movl %eax, %ebx /* Save bottom of stack in ebx */ - - /* clear stack */ - cld - movl %eax, %edi - movl $(SMM_STACK_SIZE >> 2), %ecx - xorl %eax, %eax - rep stosl - - /* set new stack */ - addl $SMM_STACK_SIZE, %ebx - movl %ebx, %esp - - /* Get SMM revision */ - movl $0xfefc, %ebx /* core 0 address */ - addl %edx, %ebx /* addjust for TSEG */ - subl %ebp, %ebx /* subtract core X offset */ - movl (%ebx), %eax - pushl %eax - - /* Call 32bit C handler */ - call smi_handler - - /* Release lock */ - movl $(TSEG_BAR), %eax /* Get TSEG base from PCIE */ - movl (%eax), %ebx /* Save TSEG_BAR in %ebx */ - andl $~1, %ebx /* Remove lock bit */ - addl $(smm_lock), %ebx - movw $SMI_UNLOCKED, %ax - xchg %ax, (%ebx) - - /* To return, just do rsm. It will "clean up" protected mode */ - rsm - -smm_gdt: - /* The first GDT entry can not be used. Keep it zero */ - .long 0x00000000, 0x00000000 - - /* gdt selector 0x08, flat code segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x9b, 0xcf, 0x00 /* G=1 and 0x0f, 4GB limit */ - - /* gdt selector 0x10, flat data segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x93, 0xcf, 0x00 - -smm_gdt_end: - -.section ".earlydata", "a", @progbits - -.code16 - -.align 4, 0xff - -smm_lock: - .word SMI_UNLOCKED - -.align 4, 0xff - -smm_prot_vector: - .long smm_prot_start - .short 8 - -.align 4, 0xff - -smm_gdt_vector: - .word smm_gdt_end - smm_gdt - 1 - .long smm_gdt - smm_handler_start - -.section ".jumptable", "a", @progbits - -/* This is the SMM jump table. All cores use the same SMM handler - * for simplicity. But SMM Entry needs to be different due to the - * save state area. The jump table makes sure all CPUs jump into the - * real handler on SMM entry. - */ - -/* This code currently supports up to 16 CPU cores. If more than 16 CPU cores - * shall be used, below table has to be updated, as well as smm_tseg.ld - */ - -/* When using TSEG do a relative jump and fix up the CS later since we - * do not know what our TSEG base is yet. - */ - -.code16 -jumptable: - /* core 15 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 14 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 13 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 12 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 11 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 10 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 9 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 8 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 7 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 6 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 5 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 4 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 3 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 2 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 1 */ - jmp smm_handler_start -.align 1024, 0x00 - /* core 0 */ - jmp smm_handler_start -.align 1024, 0x00 diff --git a/src/include/cpu/x86/smm.h b/src/include/cpu/x86/smm.h index 56e9a65..b717811 100644 --- a/src/include/cpu/x86/smm.h +++ b/src/include/cpu/x86/smm.h @@ -472,7 +472,7 @@ int mainboard_io_trap_handler(int smif);
void southbridge_smi_set_eos(void);
-#if CONFIG_SMM_MODULES +#if CONFIG_SMM_TSEG void cpu_smi_handler(void); void northbridge_smi_handler(void); void southbridge_smi_handler(void); @@ -480,24 +480,21 @@ void southbridge_smi_handler(void); void cpu_smi_handler(unsigned int node, smm_state_save_area_t *state_save); void northbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save); void southbridge_smi_handler(unsigned int node, smm_state_save_area_t *state_save); -#endif /* CONFIG_SMM_MODULES */ +#endif /* CONFIG_SMM_TSEG */ void mainboard_smi_gpi(u32 gpi_sts); int mainboard_smi_apmc(u8 data); void mainboard_smi_sleep(u8 slp_typ);
#if !CONFIG_SMM_TSEG void smi_release_lock(void); -#elif CONFIG_SMM_MODULES -#define smi_get_tseg_base() 0 #else -/* Return address of TSEG base */ -u32 smi_get_tseg_base(void); +#define smi_get_tseg_base() 0 #endif
/* Get PMBASE address */ u16 smm_get_pmbase(void);
-#if CONFIG_SMM_MODULES +#if CONFIG_SMM_TSEG
struct smm_runtime { u32 smbase; @@ -569,7 +566,7 @@ struct smm_loader_params { int smm_setup_relocation_handler(struct smm_loader_params *params); int smm_load_module(void *smram, int size, struct smm_loader_params *params); #endif /* __SMM__ */ -#endif /* CONFIG_SMM_MODULES */ +#endif /* CONFIG_SMM_TSEG */
/* Backup and restore default SMM region. */ void *backup_default_smm_area(void); diff --git a/src/soc/intel/baytrail/Kconfig b/src/soc/intel/baytrail/Kconfig index 85631fc..0290632 100644 --- a/src/soc/intel/baytrail/Kconfig +++ b/src/soc/intel/baytrail/Kconfig @@ -27,7 +27,6 @@ config CPU_SPECIFIC_OPTIONS select PCIEXP_ASPM select PCIEXP_COMMON_CLOCK select REG_SCRIPT - select SMM_MODULES select SMM_TSEG select SMP select SPI_FLASH diff --git a/src/soc/intel/braswell/Kconfig b/src/soc/intel/braswell/Kconfig index 3f938c3..aa191b3 100644 --- a/src/soc/intel/braswell/Kconfig +++ b/src/soc/intel/braswell/Kconfig @@ -27,7 +27,6 @@ config CPU_SPECIFIC_OPTIONS select PCIEXP_ASPM select PCIEXP_COMMON_CLOCK select REG_SCRIPT - select SMM_MODULES select SMM_TSEG select SMP select SPI_FLASH diff --git a/src/soc/intel/broadwell/Kconfig b/src/soc/intel/broadwell/Kconfig index 6c54a55..33fa4de 100644 --- a/src/soc/intel/broadwell/Kconfig +++ b/src/soc/intel/broadwell/Kconfig @@ -38,7 +38,6 @@ config CPU_SPECIFIC_OPTIONS select PCIEXP_COMMON_CLOCK select PCIEXP_CLK_PM select PCIEXP_L1_SUB_STATE - select SMM_MODULES select SMM_TSEG select SMP select SPI_FLASH diff --git a/src/soc/intel/fsp_baytrail/Kconfig b/src/soc/intel/fsp_baytrail/Kconfig index 1cdbddc..371ad52 100644 --- a/src/soc/intel/fsp_baytrail/Kconfig +++ b/src/soc/intel/fsp_baytrail/Kconfig @@ -38,7 +38,6 @@ config CPU_SPECIFIC_OPTIONS select RELOCATABLE_MODULES select PARALLEL_MP select REG_SCRIPT - select SMM_MODULES select SMM_TSEG select BAYTRAIL_SMM select SMP