diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2018-12-28 16:54:54 +0200 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-01-08 15:33:47 +0000 |
| commit | c641f7ed9f9083f73ddb69676a74d7e205351baa (patch) | |
| tree | 7a81b9621e6c667b0c0a5de268cb7ce08e6c972d /src/cpu/intel/car/p3 | |
| parent | ee2e936f4059d8aad4161d44915a05271df1aaae (diff) | |
cpu/intel/car: Prepare for C_ENVIRONMENT_BOOTBLOCK
Pass timestamps and BIST to romstage using the same signature
as C_ENVIRONMENT_BOOTBLOCK will.
Change-Id: Ic90da6b1b5ac3b56c69b593ba447ed8e05c8a4e2
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30492
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/cpu/intel/car/p3')
| -rw-r--r-- | src/cpu/intel/car/p3/cache_as_ram.S | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/src/cpu/intel/car/p3/cache_as_ram.S b/src/cpu/intel/car/p3/cache_as_ram.S index 121d169daf..280913163a 100644 --- a/src/cpu/intel/car/p3/cache_as_ram.S +++ b/src/cpu/intel/car/p3/cache_as_ram.S @@ -23,11 +23,12 @@ #define CACHE_AS_RAM_SIZE CONFIG_DCACHE_RAM_SIZE #define CACHE_AS_RAM_BASE CONFIG_DCACHE_RAM_BASE +.global bootblock_pre_c_entry + .code32 _cache_as_ram_setup: - /* Save the BIST result. */ - movl %eax, %ebp +bootblock_pre_c_entry: cache_as_ram: post_code(0x20) @@ -156,18 +157,24 @@ addrsize_set_high: movl %eax, %cr0 /* Setup the stack. */ - movl $(CONFIG_DCACHE_RAM_BASE + CONFIG_DCACHE_RAM_SIZE), %eax - movl %eax, %esp - - /* Restore the BIST result. */ - movl %ebp, %eax - movl %esp, %ebp - pushl %eax - -before_romstage: - post_code(0x2f) - /* Call romstage.c main function. */ - call romstage_main + mov $_car_stack_end, %esp + + /* Need to align stack to 16 bytes at call instruction. Account for + the pushes below. */ + andl $0xfffffff0, %esp + subl $4, %esp + + /* push TSC and BIST to stack */ + movd %mm0, %eax + pushl %eax /* BIST */ + movd %mm2, %eax + pushl %eax /* tsc[63:32] */ + movd %mm1, %eax + pushl %eax /* tsc[31:0] */ + +before_c_entry: + post_code(0x29) + call bootblock_c_entry_bist /* Should never see this postcode */ post_code(POST_DEAD_CODE) |