Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -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, |
Aaron Durbin | 2c4aab3 | 2015-03-06 23:26:06 -0600 | [diff] [blame] | 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 14 | */ |
| 15 | |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 16 | #include <cbmem.h> |
Kyösti Mälkki | 26a682c | 2019-08-02 06:13:22 +0300 | [diff] [blame] | 17 | #include <stage_cache.h> |
Julius Werner | 18ea2d3 | 2014-10-07 16:42:17 -0700 | [diff] [blame] | 18 | #include <soc/iosf.h> |
| 19 | #include <soc/smm.h> |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 20 | |
Kyösti Mälkki | f1e3c76 | 2014-12-22 12:28:07 +0200 | [diff] [blame] | 21 | uintptr_t smm_region_start(void) |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 22 | { |
Kyösti Mälkki | f1e3c76 | 2014-12-22 12:28:07 +0200 | [diff] [blame] | 23 | return (iosf_bunit_read(BUNIT_SMRRL) << 20); |
Aaron Durbin | 7837be6 | 2013-10-21 22:32:00 -0500 | [diff] [blame] | 24 | } |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 25 | |
Kyösti Mälkki | f1e3c76 | 2014-12-22 12:28:07 +0200 | [diff] [blame] | 26 | void *cbmem_top(void) |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 27 | { |
Kyösti Mälkki | f1e3c76 | 2014-12-22 12:28:07 +0200 | [diff] [blame] | 28 | return (void *) smm_region_start(); |
Aaron Durbin | 9a7d7bc | 2013-09-07 00:41:48 -0500 | [diff] [blame] | 29 | } |
Kyösti Mälkki | 26a682c | 2019-08-02 06:13:22 +0300 | [diff] [blame] | 30 | |
| 31 | void stage_cache_external_region(void **base, size_t *size) |
| 32 | { |
| 33 | char *smm_base; |
| 34 | /* 1MiB cache size */ |
| 35 | const long cache_size = CONFIG_SMM_RESERVED_SIZE; |
| 36 | |
| 37 | /* Ramstage cache lives in TSEG region which is the definition of |
| 38 | * cbmem_top(). */ |
| 39 | smm_base = cbmem_top(); |
| 40 | *size = cache_size; |
| 41 | *base = &smm_base[smm_region_size() - cache_size]; |
| 42 | } |