]>
Commit | Line | Data |
---|---|---|
6cb142fa | 1 | /* |
a187559e | 2 | * U-Boot - boot.c - misc boot helper functions |
6cb142fa | 3 | * |
9171fc81 | 4 | * Copyright (c) 2005-2008 Analog Devices Inc. |
6cb142fa WD |
5 | * |
6 | * (C) Copyright 2000-2004 | |
7 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
8 | * | |
9171fc81 | 9 | * Licensed under the GPL-2 or later. |
6cb142fa WD |
10 | */ |
11 | ||
6cb142fa WD |
12 | #include <common.h> |
13 | #include <command.h> | |
14 | #include <image.h> | |
9171fc81 | 15 | #include <asm/blackfin.h> |
6cb142fa | 16 | |
6cb142fa | 17 | #ifdef SHARED_RESOURCES |
3f0606ad | 18 | extern void swap_to(int device_id); |
6cb142fa WD |
19 | #endif |
20 | ||
5fc564ed MH |
21 | #ifdef CONFIG_VIDEO |
22 | extern void video_stop(void); | |
23 | #endif | |
24 | ||
9171fc81 MF |
25 | static char *make_command_line(void) |
26 | { | |
36cd52a0 | 27 | char *dest = (char *)CONFIG_LINUX_CMDLINE_ADDR; |
9171fc81 MF |
28 | char *bootargs = getenv("bootargs"); |
29 | ||
30 | if (bootargs == NULL) | |
31 | return NULL; | |
32 | ||
36cd52a0 MF |
33 | strncpy(dest, bootargs, CONFIG_LINUX_CMDLINE_SIZE); |
34 | dest[CONFIG_LINUX_CMDLINE_SIZE - 1] = 0; | |
9171fc81 MF |
35 | return dest; |
36 | } | |
6cb142fa | 37 | |
b1e9435b MF |
38 | extern ulong bfin_poweron_retx; |
39 | ||
54841ab5 | 40 | int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images) |
6cb142fa | 41 | { |
d5934ad7 MB |
42 | int (*appl) (char *cmdline); |
43 | char *cmdline; | |
6cb142fa | 44 | |
7af26b16 SG |
45 | if (flag & BOOTM_STATE_OS_PREP) |
46 | return 0; | |
49c3a861 KG |
47 | if ((flag != 0) && (flag != BOOTM_STATE_OS_GO)) |
48 | return 1; | |
49 | ||
6cb142fa WD |
50 | #ifdef SHARED_RESOURCES |
51 | swap_to(FLASH); | |
52 | #endif | |
53 | ||
5fc564ed MH |
54 | #ifdef CONFIG_VIDEO |
55 | /* maybe this should be standardized and moved to bootm ... */ | |
56 | video_stop(); | |
57 | #endif | |
58 | ||
c160a954 | 59 | appl = (int (*)(char *))images->ep; |
d5934ad7 | 60 | |
fe033ad6 | 61 | printf("Starting Kernel at = %p\n", appl); |
6cb142fa | 62 | cmdline = make_command_line(); |
9171fc81 MF |
63 | icache_disable(); |
64 | dcache_disable(); | |
b1e9435b MF |
65 | asm __volatile__( |
66 | "RETX = %[retx];" | |
67 | "CALL (%0);" | |
68 | : | |
69 | : "p"(appl), "q0"(cmdline), [retx] "d"(bfin_poweron_retx) | |
70 | ); | |
cd7c596e | 71 | /* does not return */ |
a3a08c0c | 72 | |
40d7e99d | 73 | return 1; |
6cb142fa | 74 | } |