diff options
Diffstat (limited to 'resources/libreboot/patch/kgpe-d16/0132-cpu-amd-microcode-Introduce-CBFS-access-spinlock-to-.patch')
| -rw-r--r-- | resources/libreboot/patch/kgpe-d16/0132-cpu-amd-microcode-Introduce-CBFS-access-spinlock-to-.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/resources/libreboot/patch/kgpe-d16/0132-cpu-amd-microcode-Introduce-CBFS-access-spinlock-to-.patch b/resources/libreboot/patch/kgpe-d16/0132-cpu-amd-microcode-Introduce-CBFS-access-spinlock-to-.patch new file mode 100644 index 00000000..a8005e8a --- /dev/null +++ b/resources/libreboot/patch/kgpe-d16/0132-cpu-amd-microcode-Introduce-CBFS-access-spinlock-to-.patch @@ -0,0 +1,151 @@ +From 2b8c4a3914e4d0705f10f09ea570e6f8a9d7ef93 Mon Sep 17 00:00:00 2001 +From: Timothy Pearson <kb9vqf@pearsoncomputing.net> +Date: Fri, 28 Aug 2015 20:48:17 -0500 +Subject: [PATCH 132/146] cpu/amd/microcode: Introduce CBFS access spinlock to + avoid IOMMU failure + +--- + src/Kconfig | 4 ++++ + src/arch/x86/include/arch/smp/spinlock.h | 7 ++++++- + src/cpu/amd/microcode/microcode.c | 23 +++++++++++++++++++++++ + src/mainboard/asus/kgpe-d16/Kconfig | 1 + + src/mainboard/asus/kgpe-d16/romstage.c | 15 ++++++++++++++- + 5 files changed, 48 insertions(+), 2 deletions(-) + +diff --git a/src/Kconfig b/src/Kconfig +index f1b7ebe..6b0df6a 100644 +--- a/src/Kconfig ++++ b/src/Kconfig +@@ -455,6 +455,10 @@ config HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK + bool + default n + ++config HAVE_ROMSTAGE_MICROCODE_CBFS_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 cf142a9..291c943 100644 +--- a/src/arch/x86/include/arch/smp/spinlock.h ++++ b/src/arch/x86/include/arch/smp/spinlock.h +@@ -1,7 +1,10 @@ + #ifndef ARCH_SMP_SPINLOCK_H + #define ARCH_SMP_SPINLOCK_H + +-#if !defined(__PRE_RAM__) || defined(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) || defined(CONFIG_HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK) ++#if !defined(__PRE_RAM__) \ ++ || defined(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) \ ++ || defined(CONFIG_HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK) \ ++ || defined(CONFIG_HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK) + + /* + * Your basic SMP spinlocks, allowing only a single CPU anywhere +@@ -16,6 +19,8 @@ spinlock_t* romstage_console_lock(void); + void initialize_romstage_console_lock(void); + spinlock_t* romstage_nvram_cbfs_lock(void); + void initialize_romstage_nvram_cbfs_lock(void); ++spinlock_t* romstage_microcode_cbfs_lock(void); ++void initialize_romstage_microcode_cbfs_lock(void); + #endif + + #define SPIN_LOCK_UNLOCKED (spinlock_t) { 1 } +diff --git a/src/cpu/amd/microcode/microcode.c b/src/cpu/amd/microcode/microcode.c +index ce5b08f..fc6b0f2 100644 +--- a/src/cpu/amd/microcode/microcode.c ++++ b/src/cpu/amd/microcode/microcode.c +@@ -24,6 +24,12 @@ + #include <cpu/amd/microcode.h> + #include <cbfs.h> + ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK) ++#include <smp/spinlock.h> ++#endif ++#endif ++ + #define UCODE_DEBUG(fmt, args...) \ + do { printk(BIOS_DEBUG, "[microcode] "fmt, ##args); } while(0) + +@@ -106,12 +112,29 @@ void amd_update_microcode_from_cbfs(u32 equivalent_processor_rev_id) + return; + } + ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK) ++ spin_lock(romstage_microcode_cbfs_lock()); ++#endif ++#endif ++ + ucode = cbfs_boot_map_with_leak(MICROCODE_CBFS_FILE, + CBFS_TYPE_MICROCODE, &ucode_len); + if (!ucode) { + UCODE_DEBUG("microcode file not found. Skipping updates.\n"); ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK) ++ spin_unlock(romstage_microcode_cbfs_lock()); ++#endif ++#endif + return; + } + + amd_update_microcode(ucode, ucode_len, equivalent_processor_rev_id); ++ ++#ifdef __PRE_RAM__ ++#if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK) ++ spin_unlock(romstage_microcode_cbfs_lock()); ++#endif ++#endif + } +diff --git a/src/mainboard/asus/kgpe-d16/Kconfig b/src/mainboard/asus/kgpe-d16/Kconfig +index 06116a2..5f421db 100644 +--- a/src/mainboard/asus/kgpe-d16/Kconfig ++++ b/src/mainboard/asus/kgpe-d16/Kconfig +@@ -15,6 +15,7 @@ config BOARD_SPECIFIC_OPTIONS # dummy + select PARALLEL_CPU_INIT + select HAVE_ROMSTAGE_CONSOLE_SPINLOCK + select HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK ++ select HAVE_ROMSTAGE_MICROCODE_CBFS_SPINLOCK + select HAVE_HARD_RESET + select HAVE_OPTION_TABLE + select HAVE_CMOS_DEFAULT +diff --git a/src/mainboard/asus/kgpe-d16/romstage.c b/src/mainboard/asus/kgpe-d16/romstage.c +index 3740bb0..6b5d801 100644 +--- a/src/mainboard/asus/kgpe-d16/romstage.c ++++ b/src/mainboard/asus/kgpe-d16/romstage.c +@@ -327,6 +327,18 @@ void initialize_romstage_nvram_cbfs_lock(void) + car_get_var(nvram_cbfs_spinlock) = SPIN_LOCK_UNLOCKED; + } + ++static spinlock_t microcode_cbfs_spinlock CAR_GLOBAL; ++ ++spinlock_t* romstage_microcode_cbfs_lock(void) ++{ ++ return car_get_var_ptr(µcode_cbfs_spinlock); ++} ++ ++void initialize_romstage_microcode_cbfs_lock(void) ++{ ++ car_get_var(microcode_cbfs_spinlock) = SPIN_LOCK_UNLOCKED; ++} ++ + void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) + { + uint32_t esp; +@@ -348,9 +360,10 @@ void cache_as_ram_main(unsigned long bist, unsigned long cpu_init_detectedx) + timestamp_init(timestamp_get()); + timestamp_add_now(TS_START_ROMSTAGE); + +- /* Initialize the printk and nvram CBFS spinlocks */ ++ /* Initialize the printk, nvram CBFS, and microcode CBFS spinlocks */ + initialize_romstage_console_lock(); + initialize_romstage_nvram_cbfs_lock(); ++ initialize_romstage_microcode_cbfs_lock(); + + /* Nothing special needs to be done to find bus 0 */ + /* Allow the HT devices to be found */ +-- +1.7.9.5 + |