diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2020-09-24 18:57:43 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-11-02 06:26:43 +0000 |
| commit | 49da0cfe4681f883d7be9ee68c7d4de1108eb0cc (patch) | |
| tree | 3fa155279d56ac5e709c768eb787cc4e7a1703fa /src/cpu/intel/car | |
| parent | f9bc5baee5296d8cf36053a1df6d24c16f7e2bd3 (diff) | |
cpu/intel/car/non-evict/cache_as_ram.S: Add support for longmode
* Use heap for linker script calculated constant to fix relocation
symbols in mixed assembly code.
Tested on HPZ220:
* Still boots in x86_32.
Tested on Lenovo T410:
* Doesn't need the MMX register fix in long mode.
Change-Id: I3e72a0bebf728fb678308006ea3a3aeb92910a84
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44673
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/cpu/intel/car')
| -rw-r--r-- | src/cpu/intel/car/cache_as_ram_symbols.inc | 20 | ||||
| -rw-r--r-- | src/cpu/intel/car/non-evict/cache_as_ram.S | 25 |
2 files changed, 39 insertions, 6 deletions
diff --git a/src/cpu/intel/car/cache_as_ram_symbols.inc b/src/cpu/intel/car/cache_as_ram_symbols.inc new file mode 100644 index 0000000000..857e039952 --- /dev/null +++ b/src/cpu/intel/car/cache_as_ram_symbols.inc @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* Trick the linker into supporting x86_64 relocations in 32bit code */ +#if ENV_X86_64 +#define uintptr_t quad +#else +#define uintptr_t long +#endif + +rom_mtrr_mask: +.uintptr_t _rom_mtrr_mask + +rom_mtrr_base: +.uintptr_t _rom_mtrr_base + +car_mtrr_mask: +.uintptr_t _car_mtrr_mask + +car_mtrr_start: +.uintptr_t _car_mtrr_start diff --git a/src/cpu/intel/car/non-evict/cache_as_ram.S b/src/cpu/intel/car/non-evict/cache_as_ram.S index d08736585d..cde1ca3d15 100644 --- a/src/cpu/intel/car/non-evict/cache_as_ram.S +++ b/src/cpu/intel/car/non-evict/cache_as_ram.S @@ -9,6 +9,8 @@ .global bootblock_pre_c_entry +#include <cpu/intel/car/cache_as_ram_symbols.inc> + .code32 _cache_as_ram_setup: @@ -83,11 +85,10 @@ addrsize_set_high: movl $MTRR_PHYS_MASK(1), %ecx wrmsr - post_code(0x23) /* Set Cache-as-RAM base address. */ movl $(MTRR_PHYS_BASE(0)), %ecx - movl $_car_mtrr_start, %eax + movl car_mtrr_start, %eax orl $MTRR_TYPE_WRBACK, %eax xorl %edx, %edx wrmsr @@ -96,20 +97,20 @@ addrsize_set_high: /* Set Cache-as-RAM mask. */ movl $(MTRR_PHYS_MASK(0)), %ecx rdmsr - movl $_car_mtrr_mask, %eax + mov car_mtrr_mask, %eax orl $MTRR_PHYS_MASK_VALID, %eax wrmsr /* Enable cache for our code in Flash because we do XIP here */ movl $MTRR_PHYS_BASE(1), %ecx xorl %edx, %edx - movl $_rom_mtrr_base, %eax + mov rom_mtrr_base, %eax orl $MTRR_TYPE_WRPROT, %eax wrmsr movl $MTRR_PHYS_MASK(1), %ecx rdmsr - movl $_rom_mtrr_mask, %eax + mov rom_mtrr_mask, %eax orl $MTRR_PHYS_MASK_VALID, %eax wrmsr @@ -207,8 +208,19 @@ end_microcode_update: /* Need to align stack to 16 bytes at call instruction. Account for the pushes below. */ andl $0xfffffff0, %esp - subl $4, %esp +#if ENV_X86_64 + + #include <cpu/x86/64bit/entry64.inc> + + movd %mm2, %rdi + shlq $32, %rdi + movd %mm1, %rsi + or %rsi, %rdi + movd %mm0, %rsi + +#else + subl $4, %esp /* push TSC and BIST to stack */ movd %mm0, %eax pushl %eax /* BIST */ @@ -216,6 +228,7 @@ end_microcode_update: pushl %eax /* tsc[63:32] */ movd %mm1, %eax pushl %eax /* tsc[31:0] */ +#endif before_c_entry: post_code(0x29) |