diff options
Diffstat (limited to 'resources/libreboot/patch/coreboot/33fb4cf0ffb01be8bcb6b488872c87eb50e7d77f/grub/kgpe-d16/0027-src-console-Add-x86-romstage-spinlock-option-and-pri.patch')
| -rw-r--r-- | resources/libreboot/patch/coreboot/33fb4cf0ffb01be8bcb6b488872c87eb50e7d77f/grub/kgpe-d16/0027-src-console-Add-x86-romstage-spinlock-option-and-pri.patch | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/resources/libreboot/patch/coreboot/33fb4cf0ffb01be8bcb6b488872c87eb50e7d77f/grub/kgpe-d16/0027-src-console-Add-x86-romstage-spinlock-option-and-pri.patch b/resources/libreboot/patch/coreboot/33fb4cf0ffb01be8bcb6b488872c87eb50e7d77f/grub/kgpe-d16/0027-src-console-Add-x86-romstage-spinlock-option-and-pri.patch new file mode 100644 index 0000000..a2aa438 --- /dev/null +++ b/resources/libreboot/patch/coreboot/33fb4cf0ffb01be8bcb6b488872c87eb50e7d77f/grub/kgpe-d16/0027-src-console-Add-x86-romstage-spinlock-option-and-pri.patch @@ -0,0 +1,193 @@ +From 27f6bb783ba638e6aa2539a6c51ec96386dbf28f Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <tpearson@raptorengineeringinc.com> +Date: Mon, 18 May 2015 16:04:10 -0500 +Subject: [PATCH 027/143] src/console: Add x86 romstage spinlock option and + prink spinlock support + +Change-Id: Ice42a0d3177736bf6e1bc601092e413601866f20 +Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com> +--- + src/Kconfig | 4 ++++ + src/arch/x86/include/arch/smp/spinlock.h | 11 ++++++++++- + src/console/printk.c | 19 +++++++++++++++++++ + src/cpu/amd/car/disable_cache_as_ram.c | 10 ++++++++++ + src/cpu/amd/car/post_cache_as_ram.c | 20 ++++++++++++++------ + 5 files changed, 57 insertions(+), 7 deletions(-) + +diff --git a/src/Kconfig b/src/Kconfig +index 368384d..5aa33d00 100644 +--- a/src/Kconfig ++++ b/src/Kconfig +@@ -446,6 +446,10 @@ config HAVE_HARD_RESET + This variable specifies whether a given board has a hard_reset + function, no matter if it's provided by board code or chipset code. + ++config HAVE_ROMSTAGE_CONSOLE_SPINLOCK ++ bool ++ default n ++ + config HAVE_MONOTONIC_TIMER + def_bool n + help +diff --git a/src/arch/x86/include/arch/smp/spinlock.h b/src/arch/x86/include/arch/smp/spinlock.h +index 32be2f2..3283540 100644 +--- a/src/arch/x86/include/arch/smp/spinlock.h ++++ b/src/arch/x86/include/arch/smp/spinlock.h +@@ -1,7 +1,7 @@ + #ifndef ARCH_SMP_SPINLOCK_H + #define ARCH_SMP_SPINLOCK_H + +-#ifndef __PRE_RAM__ ++#if !defined(__PRE_RAM__) || defined(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) + + /* + * Your basic SMP spinlocks, allowing only a single CPU anywhere +@@ -11,9 +11,18 @@ typedef struct { + volatile unsigned int lock; + } spinlock_t; + ++#ifdef __PRE_RAM__ ++spinlock_t *romstage_console_lock(void); ++void initialize_romstage_console_lock(void); ++#endif + + #define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 } ++ ++#ifndef __PRE_RAM__ + #define DECLARE_SPIN_LOCK(x) static spinlock_t x = SPIN_LOCK_UNLOCKED; ++#else ++#define DECLARE_SPIN_LOCK(x) ++#endif + + /* + * Simple spin lock operations. There are two variants, one clears IRQ's +diff --git a/src/console/printk.c b/src/console/printk.c +index aab7ff5..5a23db0 100644 +--- a/src/console/printk.c ++++ b/src/console/printk.c +@@ -2,6 +2,7 @@ + * blatantly copied from linux/kernel/printk.c + * + * Copyright (C) 1991, 1992 Linus Torvalds ++ * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering + * + */ + +@@ -13,7 +14,13 @@ + #include <stddef.h> + #include <trace.h> + ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) ++#ifndef __PRE_RAM__ + DECLARE_SPIN_LOCK(console_lock) ++#endif ++#else ++DECLARE_SPIN_LOCK(console_lock) ++#endif + + void do_putchar(unsigned char byte) + { +@@ -39,7 +46,13 @@ int do_printk(int msg_level, const char *fmt, ...) + #endif + + DISABLE_TRACE; ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) ++ spin_lock(romstage_console_lock()); ++#endif ++#else + spin_lock(&console_lock); ++#endif + + va_start(args, fmt); + i = vtxprintf(wrap_putchar, fmt, args, NULL); +@@ -47,7 +60,13 @@ int do_printk(int msg_level, const char *fmt, ...) + + console_tx_flush(); + ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) ++ spin_unlock(romstage_console_lock()); ++#endif ++#else + spin_unlock(&console_lock); ++#endif + ENABLE_TRACE; + + return i; +diff --git a/src/cpu/amd/car/disable_cache_as_ram.c b/src/cpu/amd/car/disable_cache_as_ram.c +index 3b464b8..5eccf79 100644 +--- a/src/cpu/amd/car/disable_cache_as_ram.c ++++ b/src/cpu/amd/car/disable_cache_as_ram.c +@@ -24,6 +24,16 @@ + + #include <cpu/x86/cache.h> + ++static inline __attribute__((always_inline)) uint32_t amd_fam1x_cpu_family(void) ++{ ++ uint32_t family; ++ ++ family = cpuid_eax(0x80000001); ++ family = ((family & 0xf00000) >> 16) | ((family & 0xf00) >> 8); ++ ++ return family; ++} ++ + static inline __attribute__((always_inline)) void disable_cache_as_ram(void) + { + msr_t msr; +diff --git a/src/cpu/amd/car/post_cache_as_ram.c b/src/cpu/amd/car/post_cache_as_ram.c +index e265de1..257b41a 100644 +--- a/src/cpu/amd/car/post_cache_as_ram.c ++++ b/src/cpu/amd/car/post_cache_as_ram.c +@@ -84,6 +84,10 @@ static void prepare_ramstage_region(void *resume_backup_memory) + memset_((void*)0, 0, CONFIG_RAMTOP - backup_top); + } + ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) ++ initialize_romstage_console_lock(); ++#endif ++ + print_car_debug("Done\n"); + } + +@@ -92,18 +96,19 @@ static void prepare_ramstage_region(void *resume_backup_memory) + static void vErrata343(void) + { + #ifdef BU_CFG2_MSR +- msr_t msr; +- unsigned int uiMask = 0xFFFFFFF7; ++ msr_t msr; ++ unsigned int uiMask = 0xFFFFFFF7; + +- msr = rdmsr(BU_CFG2_MSR); +- msr.hi &= uiMask; // set bit 35 to 0 +- wrmsr(BU_CFG2_MSR, msr); ++ msr = rdmsr(BU_CFG2_MSR); ++ msr.hi &= uiMask; // IcDisSpecTlbWr (bit 35) = 0 ++ wrmsr(BU_CFG2_MSR, msr); + #endif + } + + void post_cache_as_ram(void) + { + void *resume_backup_memory = NULL; ++ uint32_t family = amd_fam1x_cpu_family(); + + struct romstage_handoff *handoff; + handoff = romstage_handoff_find_or_add(); +@@ -120,7 +125,10 @@ void post_cache_as_ram(void) + prepare_romstage_ramstack(resume_backup_memory); + + /* from here don't store more data in CAR */ +- vErrata343(); ++ if (family < 0x6f) { ++ /* Family 10h or earlier */ ++ vErrata343(); ++ } + + size_t car_size = car_data_size(); + void *migrated_car = (void *)(CONFIG_RAMTOP - car_size); +-- +1.7.9.5 + |