| Marshall Dawson | 9df969a | 2017-07-25 18:46:46 -0600 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| Marshall Dawson | 9df969a | 2017-07-25 18:46:46 -0600 | [diff] [blame] | 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; version 2 of the License. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | */ |
| 14 | |
| 15 | /****************************************************************************** |
| 16 | * $Workfile:: cache_as_ram.S |
| 17 | * |
| 18 | * Description: CAR setup called from bootblock_crt0.S. |
| 19 | * |
| 20 | ****************************************************************************** |
| 21 | */ |
| 22 | |
| 23 | #include "gcccar.inc" |
| Marshall Dawson | 9df969a | 2017-07-25 18:46:46 -0600 | [diff] [blame] | 24 | #include <cpu/x86/post_code.h> |
| 25 | |
| 26 | /* |
| 27 | * on entry: |
| 28 | * mm0: BIST (ignored) |
| 29 | * mm2_mm1: timestamp at bootblock_protected_mode_entry |
| 30 | */ |
| 31 | |
| 32 | .global bootblock_pre_c_entry |
| 33 | bootblock_pre_c_entry: |
| 34 | |
| 35 | post_code(0xa0) |
| 36 | |
| 37 | AMD_ENABLE_STACK |
| 38 | |
| 39 | /* Align the stack and keep aligned for call to bootblock_c_entry() */ |
| 40 | and $0xfffffff0, %esp |
| 41 | sub $8, %esp |
| 42 | |
| 43 | movd %mm2, %eax |
| 44 | pushl %eax /* tsc[63:32] */ |
| 45 | movd %mm1, %eax |
| 46 | pushl %eax /* tsc[31:0] */ |
| 47 | |
| 48 | before_carstage: |
| 49 | post_code(0xa2) |
| 50 | |
| 51 | call bootblock_c_entry |
| 52 | /* Never reached */ |
| 53 | |
| 54 | .halt_forever: |
| 55 | post_code(POST_DEAD_CODE) |
| 56 | hlt |
| 57 | jmp .halt_forever |