Rajeshwari Shinde | 643be9c | 2013-07-04 12:29:17 +0530 | [diff] [blame] | 1 | /* |
| 2 | * Common APIs for EXYNOS based board |
| 3 | * |
| 4 | * Copyright (C) 2013 Samsung Electronics |
| 5 | * Rajeshwari Shinde <rajeshwari.s@samsung.com> |
| 6 | * |
| 7 | * See file CREDITS for list of people who contributed to this |
| 8 | * project. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or |
| 11 | * modify it under the terms of the GNU General Public License as |
| 12 | * published by the Free Software Foundation; either version 2 of |
| 13 | * the License, or (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 23 | * MA 02111-1307 USA |
| 24 | */ |
| 25 | |
Doug Anderson | 306f527 | 2015-02-20 13:27:20 +0530 | [diff] [blame] | 26 | #include <asm/arch/system.h> |
| 27 | |
Rajeshwari Shinde | 643be9c | 2013-07-04 12:29:17 +0530 | [diff] [blame] | 28 | #define DMC_OFFSET 0x10000 |
| 29 | |
| 30 | /* |
| 31 | * Memory initialization |
| 32 | * |
| 33 | * @param reset Reset PHY during initialization. |
| 34 | */ |
| 35 | void mem_ctrl_init(int reset); |
| 36 | |
| 37 | /* System Clock initialization */ |
| 38 | void system_clock_init(void); |
| 39 | |
| 40 | /* |
| 41 | * Init subsystems according to the reset status |
| 42 | * |
Heinrich Schuchardt | 185f812 | 2022-01-19 18:05:50 +0100 | [diff] [blame] | 43 | * Return: 0 for a normal boot, non-zero for a resume |
Rajeshwari Shinde | 643be9c | 2013-07-04 12:29:17 +0530 | [diff] [blame] | 44 | */ |
| 45 | int do_lowlevel_init(void); |
| 46 | |
| 47 | void sdelay(unsigned long); |
Doug Anderson | 306f527 | 2015-02-20 13:27:20 +0530 | [diff] [blame] | 48 | |
| 49 | enum l2_cache_params { |
| 50 | CACHE_DATA_RAM_LATENCY_2_CYCLES = (2 << 0), |
| 51 | CACHE_DATA_RAM_LATENCY_3_CYCLES = (3 << 0), |
| 52 | CACHE_DISABLE_CLEAN_EVICT = (1 << 3), |
| 53 | CACHE_DATA_RAM_SETUP = (1 << 5), |
| 54 | CACHE_TAG_RAM_LATENCY_2_CYCLES = (2 << 6), |
| 55 | CACHE_TAG_RAM_LATENCY_3_CYCLES = (3 << 6), |
| 56 | CACHE_ENABLE_HAZARD_DETECT = (1 << 7), |
| 57 | CACHE_TAG_RAM_SETUP = (1 << 9), |
| 58 | CACHE_ECC_AND_PARITY = (1 << 21), |
| 59 | CACHE_ENABLE_FORCE_L2_LOGIC = (1 << 27) |
| 60 | }; |
| 61 | |
| 62 | |
Thomas Abraham | 14a66af | 2015-08-03 17:58:01 +0530 | [diff] [blame] | 63 | #if !defined(CONFIG_SYS_L2CACHE_OFF) && defined(CONFIG_EXYNOS5420) |
Doug Anderson | 306f527 | 2015-02-20 13:27:20 +0530 | [diff] [blame] | 64 | /* |
| 65 | * Configure L2CTLR to get timings that keep us from hanging/crashing. |
| 66 | * |
| 67 | * Must be inline here since low_power_start() is called without a |
| 68 | * stack (!). |
| 69 | */ |
| 70 | static inline void configure_l2_ctlr(void) |
| 71 | { |
| 72 | uint32_t val; |
| 73 | |
| 74 | mrc_l2_ctlr(val); |
| 75 | |
| 76 | val |= CACHE_TAG_RAM_SETUP | |
| 77 | CACHE_DATA_RAM_SETUP | |
| 78 | CACHE_TAG_RAM_LATENCY_2_CYCLES | |
| 79 | CACHE_DATA_RAM_LATENCY_2_CYCLES; |
| 80 | |
Simon Glass | cf9007c | 2018-12-10 10:37:40 -0700 | [diff] [blame] | 81 | if (proid_is_exynos542x()) { |
Doug Anderson | 306f527 | 2015-02-20 13:27:20 +0530 | [diff] [blame] | 82 | val |= CACHE_ECC_AND_PARITY | |
| 83 | CACHE_TAG_RAM_LATENCY_3_CYCLES | |
| 84 | CACHE_DATA_RAM_LATENCY_3_CYCLES; |
| 85 | } |
| 86 | |
| 87 | mcr_l2_ctlr(val); |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | * Configure L2ACTLR. |
| 92 | * |
| 93 | * Must be inline here since low_power_start() is called without a |
| 94 | * stack (!). |
| 95 | */ |
| 96 | static inline void configure_l2_actlr(void) |
| 97 | { |
| 98 | uint32_t val; |
| 99 | |
Simon Glass | cf9007c | 2018-12-10 10:37:40 -0700 | [diff] [blame] | 100 | if (proid_is_exynos542x()) { |
Doug Anderson | 306f527 | 2015-02-20 13:27:20 +0530 | [diff] [blame] | 101 | mrc_l2_aux_ctlr(val); |
| 102 | val |= CACHE_ENABLE_FORCE_L2_LOGIC | |
| 103 | CACHE_DISABLE_CLEAN_EVICT; |
| 104 | mcr_l2_aux_ctlr(val); |
| 105 | } |
| 106 | } |
| 107 | #endif |