projects / thirdparty / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 83d290c5 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 5c952cf0 WD |
2 | /* |
| 3 | * (C) Copyright 2003, Psyent Corporation <www.psyent.com> | |
| 4 | * Scott McNutt <smcnutt@psyent.com> | |
| 5c952cf0 WD |
5 | */ |
| 6 | ||
| d678a59d | 7 | #include <common.h> |
| a48336e5 | 8 | #include <bootm.h> |
| 1eb69ae4 | 9 | #include <cpu_func.h> |
| 09140113 | 10 | #include <env.h> |
| 4d72caa5 | 11 | #include <image.h> |
| 36bf446b | 12 | #include <irq_func.h> |
| f7ae49fc | 13 | #include <log.h> |
| a02c18f3 MV |
14 | #include <asm/global_data.h> |
| 15 | ||
| 16 | DECLARE_GLOBAL_DATA_PTR; | |
| 0c1c117c | 17 | |
| ed294157 TC |
18 | #define NIOS_MAGIC 0x534f494e /* enable command line and initrd passing */ |
| 19 | ||
| a48336e5 | 20 | int do_bootm_linux(int flag, struct bootm_info *bmi) |
| 5c952cf0 | 21 | { |
| a48336e5 | 22 | struct bootm_headers *images = bmi->images; |
| ed294157 | 23 | void (*kernel)(int, int, int, char *) = (void *)images->ep; |
| 00caae6d | 24 | char *commandline = env_get("bootargs"); |
| ed294157 TC |
25 | ulong initrd_start = images->rd_start; |
| 26 | ulong initrd_end = images->rd_end; | |
| 06c5d30d TC |
27 | char *of_flat_tree = NULL; |
| 28 | #if defined(CONFIG_OF_LIBFDT) | |
| 5a75e121 JR |
29 | /* did generic code already find a device tree? */ |
| 30 | if (images->ft_len) | |
| 31 | of_flat_tree = images->ft_addr; | |
| 06c5d30d | 32 | #endif |
| a48336e5 SG |
33 | /* TODO: Clean this up - the DT should already be set up */ |
| 34 | if (!of_flat_tree && bmi->argc > 1) | |
| 35 | of_flat_tree = (char *)hextoul(bmi->argv[1], NULL); | |
| 06c5d30d TC |
36 | if (of_flat_tree) |
| 37 | initrd_end = (ulong)of_flat_tree; | |
| 0c1c117c | 38 | |
| 2cb0e55a AB |
39 | /* |
| 40 | * allow the PREP bootm subcommand, it is required for bootm to work | |
| 41 | */ | |
| 42 | if (flag & BOOTM_STATE_OS_PREP) | |
| 43 | return 0; | |
| 44 | ||
| 49c3a861 KG |
45 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
| 46 | return 1; | |
| 47 | ||
| 0a7691e8 | 48 | /* flushes data and instruction caches before calling the kernel */ |
| ed294157 | 49 | disable_interrupts(); |
| 21ff7344 | 50 | flush_dcache_all(); |
| 0a7691e8 | 51 | |
| ed294157 TC |
52 | debug("bootargs=%s @ 0x%lx\n", commandline, (ulong)&commandline); |
| 53 | debug("initrd=0x%lx-0x%lx\n", (ulong)initrd_start, (ulong)initrd_end); | |
| 06c5d30d TC |
54 | /* kernel parameters passing |
| 55 | * r4 : NIOS magic | |
| 56 | * r5 : initrd start | |
| 57 | * r6 : initrd end or fdt | |
| 58 | * r7 : kernel command line | |
| 59 | * fdt is passed to kernel via r6, the same as initrd_end. fdt will be | |
| 60 | * verified with fdt magic. when both initrd and fdt are used at the | |
| 61 | * same time, fdt must follow immediately after initrd. | |
| 62 | */ | |
| ed294157 | 63 | kernel(NIOS_MAGIC, initrd_start, initrd_end, commandline); |
| cd7c596e | 64 | /* does not return */ |
| cd7c596e | 65 | |
| 40d7e99d | 66 | return 1; |
| 5c952cf0 | 67 | } |
| a02c18f3 MV |
68 | |
| 69 | static ulong get_sp(void) | |
| 70 | { | |
| 71 | ulong ret; | |
| 72 | ||
| 73 | asm("mov %0, sp" : "=r"(ret) : ); | |
| 74 | return ret; | |
| 75 | } | |
| 76 | ||
| 77 | void arch_lmb_reserve(struct lmb *lmb) | |
| 78 | { | |
| 79 | arch_lmb_reserve_generic(lmb, get_sp(), gd->ram_top, 4096); | |
| 80 | } |