diff options
| author | Timothy Pearson <tpearson@raptorengineeringinc.com> | 2015-08-28 20:48:17 -0500 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2016-01-07 16:52:31 +0100 |
| commit | c764c7488b2cb536bc4e09e6a8a639beeabfddeb (patch) | |
| tree | 8f63f9a4386a83ac1f5269f005c1e4394a94c75a /src/arch/x86 | |
| parent | 046d2174207d79681fe98206ce92074ac610957e (diff) | |
cpu/amd/microcode: Introduce CBFS access spinlock to avoid IOMMU failure
When microcode updates are enabled, this fixes an issue identical
to that described in GIT hash 7b22d84d:
* drivers/pc80: Add optional spinlock for nvram CBFS access
Change-Id: Ib7e8cb171f44833167053ca98a85cca23021dfba
Signed-off-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Reviewed-on: https://review.coreboot.org/12063
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/include/arch/smp/spinlock.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/arch/x86/include/arch/smp/spinlock.h b/src/arch/x86/include/arch/smp/spinlock.h index 057d9e3f8f..39a81d289c 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__) || IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) || IS_ENABLED(CONFIG_HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK) +#if !defined(__PRE_RAM__) \ + || IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK) \ + || IS_ENABLED(CONFIG_HAVE_ROMSTAGE_NVRAM_CBFS_SPINLOCK) \ + || IS_ENABLED(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 } |