| Paul Kocialkowski | c1a3e7e | 2015-07-15 16:02:25 +0200 | [diff] [blame] | 1 | /* |
| 2 | * OMAP4 boot |
| 3 | * |
| 4 | * Copyright (C) 2015 Paul Kocialkowski <contact@paulk.fr> |
| 5 | * |
| 6 | * SPDX-License-Identifier: GPL-2.0+ |
| 7 | */ |
| 8 | |
| 9 | #include <common.h> |
| 10 | #include <asm/io.h> |
| 11 | #include <asm/omap_common.h> |
| Paul Kocialkowski | e1660a5 | 2016-02-27 19:19:08 +0100 | [diff] [blame] | 12 | #include <asm/arch/sys_proto.h> |
| Paul Kocialkowski | c1a3e7e | 2015-07-15 16:02:25 +0200 | [diff] [blame] | 13 | #include <spl.h> |
| 14 | |
| 15 | static u32 boot_devices[] = { |
| 16 | BOOT_DEVICE_MMC2, |
| 17 | BOOT_DEVICE_XIP, |
| 18 | BOOT_DEVICE_XIPWAIT, |
| 19 | BOOT_DEVICE_NAND, |
| 20 | BOOT_DEVICE_XIPWAIT, |
| 21 | BOOT_DEVICE_MMC1, |
| 22 | BOOT_DEVICE_ONENAND, |
| 23 | BOOT_DEVICE_ONENAND, |
| 24 | BOOT_DEVICE_MMC2, |
| 25 | BOOT_DEVICE_ONENAND, |
| 26 | BOOT_DEVICE_XIPWAIT, |
| 27 | BOOT_DEVICE_NAND, |
| 28 | BOOT_DEVICE_NAND, |
| 29 | BOOT_DEVICE_MMC1, |
| 30 | BOOT_DEVICE_ONENAND, |
| 31 | BOOT_DEVICE_MMC2, |
| 32 | BOOT_DEVICE_XIP, |
| 33 | BOOT_DEVICE_XIPWAIT, |
| 34 | BOOT_DEVICE_NAND, |
| 35 | BOOT_DEVICE_MMC1, |
| 36 | BOOT_DEVICE_MMC1, |
| 37 | BOOT_DEVICE_ONENAND, |
| 38 | BOOT_DEVICE_MMC2, |
| 39 | BOOT_DEVICE_XIP, |
| 40 | BOOT_DEVICE_MMC2_2, |
| 41 | BOOT_DEVICE_NAND, |
| 42 | BOOT_DEVICE_MMC2_2, |
| 43 | BOOT_DEVICE_MMC1, |
| 44 | BOOT_DEVICE_MMC2_2, |
| 45 | BOOT_DEVICE_MMC2_2, |
| 46 | BOOT_DEVICE_NONE, |
| 47 | BOOT_DEVICE_XIPWAIT, |
| 48 | }; |
| 49 | |
| 50 | u32 omap_sys_boot_device(void) |
| 51 | { |
| 52 | u32 sys_boot; |
| 53 | |
| 54 | /* Grab the first 5 bits of the status register for SYS_BOOT. */ |
| 55 | sys_boot = readl((u32 *) (*ctrl)->control_status) & ((1 << 5) - 1); |
| 56 | |
| 57 | if (sys_boot >= (sizeof(boot_devices) / sizeof(u32))) |
| 58 | return BOOT_DEVICE_NONE; |
| 59 | |
| 60 | return boot_devices[sys_boot]; |
| 61 | } |
| Paul Kocialkowski | 4fa7bb9 | 2016-02-27 19:19:07 +0100 | [diff] [blame] | 62 | |
| 63 | int omap_reboot_mode(char *mode, unsigned int length) |
| 64 | { |
| 65 | unsigned int limit; |
| 66 | unsigned int i; |
| 67 | |
| 68 | if (length < 2) |
| 69 | return -1; |
| 70 | |
| Paul Kocialkowski | e1660a5 | 2016-02-27 19:19:08 +0100 | [diff] [blame] | 71 | if (!warm_reset()) |
| 72 | return -1; |
| 73 | |
| Paul Kocialkowski | 4fa7bb9 | 2016-02-27 19:19:07 +0100 | [diff] [blame] | 74 | limit = (length < OMAP_REBOOT_REASON_SIZE) ? length : |
| 75 | OMAP_REBOOT_REASON_SIZE; |
| 76 | |
| 77 | for (i = 0; i < (limit - 1); i++) |
| 78 | mode[i] = readb((u8 *)(OMAP44XX_SAR_RAM_BASE + |
| 79 | OMAP_REBOOT_REASON_OFFSET + i)); |
| 80 | |
| 81 | mode[i] = '\0'; |
| 82 | |
| 83 | return 0; |
| 84 | } |
| 85 | |
| 86 | int omap_reboot_mode_clear(void) |
| 87 | { |
| 88 | writeb(0, (u8 *)(OMAP44XX_SAR_RAM_BASE + OMAP_REBOOT_REASON_OFFSET)); |
| 89 | |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | int omap_reboot_mode_store(char *mode) |
| 94 | { |
| 95 | unsigned int i; |
| 96 | |
| 97 | for (i = 0; i < (OMAP_REBOOT_REASON_SIZE - 1) && mode[i] != '\0'; i++) |
| 98 | writeb(mode[i], (u8 *)(OMAP44XX_SAR_RAM_BASE + |
| 99 | OMAP_REBOOT_REASON_OFFSET + i)); |
| 100 | |
| 101 | writeb('\0', (u8 *)(OMAP44XX_SAR_RAM_BASE + |
| 102 | OMAP_REBOOT_REASON_OFFSET + i)); |
| 103 | |
| 104 | return 0; |
| 105 | } |