From de01136484c58d13457ccf1e42fdb2310f3cbe65 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Thu, 17 Nov 2016 22:39:29 +0200 Subject: [PATCH] intel post-car: Increase stacktop alignment MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Align top of stack to 8 bytes, value documented as FSP1.1 requirement. Also fix some cases of uintptr_t casted to unsigned long. Change-Id: I5bbd100eeb673417da205a2c2c3410fef1af61f0 Signed-off-by: Kyösti Mälkki Reviewed-on: https://review.coreboot.org/17461 Reviewed-by: Aaron Durbin Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel --- src/cpu/intel/haswell/romstage.c | 4 +--- src/drivers/intel/fsp1_1/stack.c | 4 +--- src/lib/romstage_stack.c | 3 +++ src/soc/intel/baytrail/romstage/romstage.c | 4 +--- src/soc/intel/broadwell/romstage/stack.c | 4 +--- 5 files changed, 7 insertions(+), 12 deletions(-) diff --git a/src/cpu/intel/haswell/romstage.c b/src/cpu/intel/haswell/romstage.c index f823c55b0c..48920b3968 100644 --- a/src/cpu/intel/haswell/romstage.c +++ b/src/cpu/intel/haswell/romstage.c @@ -69,15 +69,13 @@ static inline u32 *stack_push(u32 *stack, u32 value) * cache-as-ram is torn down as well as the MTRR settings to use. */ static void *setup_romstage_stack_after_car(void) { - uintptr_t top_of_stack; int num_mtrrs; u32 *slot; u32 mtrr_mask_upper; u32 top_of_ram; /* Top of stack needs to be aligned to a 4-byte boundary. */ - top_of_stack = romstage_ram_stack_top() & ~3; - slot = (void *)top_of_stack; + slot = (void *)romstage_ram_stack_top(); num_mtrrs = 0; /* The upper bits of the MTRR mask need to set according to the number diff --git a/src/drivers/intel/fsp1_1/stack.c b/src/drivers/intel/fsp1_1/stack.c index 6a64921a1a..059f8ba4f1 100644 --- a/src/drivers/intel/fsp1_1/stack.c +++ b/src/drivers/intel/fsp1_1/stack.c @@ -35,14 +35,12 @@ void *setup_stack_and_mtrrs(void) uint32_t max_mtrrs; uint32_t num_mtrrs; uint32_t *slot; - unsigned long top_of_stack; /* Display the MTTRs */ soc_display_mtrrs(); /* Top of stack needs to be aligned to a 8-byte boundary. */ - top_of_stack = romstage_ram_stack_top(); - slot = (void *)top_of_stack; + slot = (void *)romstage_ram_stack_top(); num_mtrrs = 0; max_mtrrs = soc_get_variable_mtrr_count(NULL); diff --git a/src/lib/romstage_stack.c b/src/lib/romstage_stack.c index fde9d1b9b2..ed6f09b4cb 100644 --- a/src/lib/romstage_stack.c +++ b/src/lib/romstage_stack.c @@ -44,5 +44,8 @@ uintptr_t romstage_ram_stack_top(void) uintptr_t stack_top = romstage_ram_stack_base(ROMSTAGE_RAM_STACK_SIZE, ROMSTAGE_STACK_CBMEM); stack_top += ROMSTAGE_RAM_STACK_SIZE; + + /* Make it aligned to a 8-byte boundary. */ + stack_top = ALIGN_DOWN(stack_top, 8); return stack_top; } diff --git a/src/soc/intel/baytrail/romstage/romstage.c b/src/soc/intel/baytrail/romstage/romstage.c index 9cf110e336..a61b571ecc 100644 --- a/src/soc/intel/baytrail/romstage/romstage.c +++ b/src/soc/intel/baytrail/romstage/romstage.c @@ -261,15 +261,13 @@ static inline uint32_t *stack_push(u32 *stack, u32 value) * cache-as-ram is torn down as well as the MTRR settings to use. */ static void *setup_stack_and_mttrs(void) { - unsigned long top_of_stack; int num_mtrrs; uint32_t *slot; uint32_t mtrr_mask_upper; uint32_t top_of_ram; /* Top of stack needs to be aligned to a 4-byte boundary. */ - top_of_stack = romstage_ram_stack_top() & ~3; - slot = (void *)top_of_stack; + slot = (void *)romstage_ram_stack_top(); num_mtrrs = 0; /* The upper bits of the MTRR mask need to set according to the number diff --git a/src/soc/intel/broadwell/romstage/stack.c b/src/soc/intel/broadwell/romstage/stack.c index 86a1c02b15..f17cd82d05 100644 --- a/src/soc/intel/broadwell/romstage/stack.c +++ b/src/soc/intel/broadwell/romstage/stack.c @@ -34,15 +34,13 @@ static inline uint32_t *stack_push(u32 *stack, u32 value) * cache-as-ram is torn down as well as the MTRR settings to use. */ void *setup_stack_and_mttrs(void) { - unsigned long top_of_stack; int num_mtrrs; uint32_t *slot; uint32_t mtrr_mask_upper; uint32_t top_of_ram; /* Top of stack needs to be aligned to a 4-byte boundary. */ - top_of_stack = romstage_ram_stack_top() & ~3; - slot = (void *)top_of_stack; + slot = (void *)romstage_ram_stack_top(); num_mtrrs = 0; /* The upper bits of the MTRR mask need to set according to the number