Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2013 Google Inc. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 14 | */ |
| 15 | |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 16 | #include <string.h> |
| 17 | #include <arch/acpi.h> |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 18 | #include <cbmem.h> |
| 19 | #include <console/console.h> |
Aaron Durbin | 43b7db7 | 2015-03-27 20:53:30 -0500 | [diff] [blame] | 20 | #include <console/streams.h> |
Aaron Durbin | 8fa6283 | 2013-10-28 09:54:22 -0500 | [diff] [blame] | 21 | #include <cpu/x86/tsc.h> |
Aaron Durbin | 460703b | 2015-03-27 21:17:22 -0500 | [diff] [blame] | 22 | #include <program_loading.h> |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 23 | #include <rmodule.h> |
Aaron Durbin | bd74a4b | 2015-03-06 23:17:33 -0600 | [diff] [blame] | 24 | #include <stage_cache.h> |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 25 | |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 26 | #include <soc/ramstage.h> |
| 27 | #include <soc/efi_wrapper.h> |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 28 | |
| 29 | static void ABI_X86 send_to_console(unsigned char b) |
| 30 | { |
| 31 | console_tx_byte(b); |
| 32 | } |
| 33 | |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 34 | static efi_wrapper_entry_t load_refcode_from_cache(void) |
| 35 | { |
Aaron Durbin | bd74a4b | 2015-03-06 23:17:33 -0600 | [diff] [blame] | 36 | struct prog refcode; |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 37 | |
| 38 | printk(BIOS_DEBUG, "refcode loading from cache.\n"); |
| 39 | |
Aaron Durbin | bd74a4b | 2015-03-06 23:17:33 -0600 | [diff] [blame] | 40 | stage_cache_load_stage(STAGE_REFCODE, &refcode); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 41 | |
Aaron Durbin | bd74a4b | 2015-03-06 23:17:33 -0600 | [diff] [blame] | 42 | return (efi_wrapper_entry_t)prog_entry(&refcode); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 43 | } |
| 44 | |
Aaron Durbin | 7f17759 | 2013-12-13 13:05:24 -0800 | [diff] [blame] | 45 | static efi_wrapper_entry_t load_reference_code(void) |
| 46 | { |
Aaron Durbin | ac12c66c | 2015-05-20 12:08:55 -0500 | [diff] [blame] | 47 | struct prog prog = |
Aaron Durbin | 7e7a4df | 2015-12-08 14:34:35 -0600 | [diff] [blame^] | 48 | PROG_INIT(PROG_REFCODE, CONFIG_CBFS_PREFIX "/refcode"); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 49 | struct rmod_stage_load refcode = { |
| 50 | .cbmem_id = CBMEM_ID_REFCODE, |
Aaron Durbin | 460703b | 2015-03-27 21:17:22 -0500 | [diff] [blame] | 51 | .prog = &prog, |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 52 | }; |
| 53 | |
Kyösti Mälkki | c3ed886 | 2014-06-19 19:50:51 +0300 | [diff] [blame] | 54 | if (acpi_is_wakeup_s3()) { |
Aaron Durbin | 7f17759 | 2013-12-13 13:05:24 -0800 | [diff] [blame] | 55 | return load_refcode_from_cache(); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 56 | } |
| 57 | |
Aaron Durbin | 899d13d | 2015-05-15 23:39:23 -0500 | [diff] [blame] | 58 | if (prog_locate(&prog)) { |
| 59 | printk(BIOS_DEBUG, "Couldn't locate reference code.\n"); |
| 60 | return NULL; |
| 61 | } |
| 62 | |
| 63 | if (rmodule_stage_load(&refcode)) { |
| 64 | printk(BIOS_DEBUG, "Error loading reference code.\n"); |
| 65 | return NULL; |
| 66 | } |
Aaron Durbin | 7f17759 | 2013-12-13 13:05:24 -0800 | [diff] [blame] | 67 | |
| 68 | /* Cache loaded reference code. */ |
Aaron Durbin | 899d13d | 2015-05-15 23:39:23 -0500 | [diff] [blame] | 69 | stage_cache_add(STAGE_REFCODE, &prog); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 70 | |
Aaron Durbin | 460703b | 2015-03-27 21:17:22 -0500 | [diff] [blame] | 71 | return prog_entry(&prog); |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 72 | } |
| 73 | |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 74 | void baytrail_run_reference_code(void) |
| 75 | { |
| 76 | int ret; |
| 77 | efi_wrapper_entry_t entry; |
| 78 | struct efi_wrapper_params wrp = { |
| 79 | .version = EFI_WRAPPER_VER, |
| 80 | .console_out = send_to_console, |
| 81 | }; |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 82 | |
Aaron Durbin | 7f17759 | 2013-12-13 13:05:24 -0800 | [diff] [blame] | 83 | entry = load_reference_code(); |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 84 | |
Aaron Durbin | 63fcb4a | 2013-12-12 10:29:48 -0800 | [diff] [blame] | 85 | if (entry == NULL) |
| 86 | return; |
| 87 | |
Aaron Durbin | 8fa6283 | 2013-10-28 09:54:22 -0500 | [diff] [blame] | 88 | wrp.tsc_ticks_per_microsecond = tsc_freq_mhz(); |
Aaron Durbin | ae5d83e | 2013-10-24 10:21:43 -0500 | [diff] [blame] | 89 | |
| 90 | /* Call into reference code. */ |
| 91 | ret = entry(&wrp); |
| 92 | |
| 93 | if (ret != 0) { |
| 94 | printk(BIOS_DEBUG, "Reference code returned %d\n", ret); |
| 95 | return; |
| 96 | } |
| 97 | } |