mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-04 18:41:03 +00:00
b75d8dc564
The Linux coding style guide (Documentation/process/coding-style.rst) clearly says: It's a **mistake** to use typedef for structures and pointers. Besides, using typedef for structures is annoying when you try to make headers self-contained. Let's say you have the following function declaration in a header: void foo(bd_t *bd); This is not self-contained since bd_t is not defined. To tell the compiler what 'bd_t' is, you need to include <asm/u-boot.h> #include <asm/u-boot.h> void foo(bd_t *bd); Then, the include direcective pulls in more bloat needlessly. If you use 'struct bd_info' instead, it is enough to put a forward declaration as follows: struct bd_info; void foo(struct bd_info *bd); Right, typedef'ing bd_t is a mistake. I used coccinelle to generate this commit. The semantic patch that makes this change is as follows: <smpl> @@ typedef bd_t; @@ -bd_t +struct bd_info </smpl> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
246 lines
5.8 KiB
C
246 lines
5.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2011 Andes Technology Corporation
|
|
* Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
|
|
* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <bootstage.h>
|
|
#include <command.h>
|
|
#include <env.h>
|
|
#include <hang.h>
|
|
#include <image.h>
|
|
#include <log.h>
|
|
#include <u-boot/zlib.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/bootm.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined(CONFIG_CMDLINE_TAG) || \
|
|
defined(CONFIG_INITRD_TAG) || \
|
|
defined(CONFIG_SERIAL_TAG) || \
|
|
defined(CONFIG_REVISION_TAG)
|
|
static void setup_start_tag(struct bd_info *bd);
|
|
|
|
# ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
static void setup_memory_tags(struct bd_info *bd);
|
|
# endif
|
|
static void setup_commandline_tag(struct bd_info *bd, char *commandline);
|
|
|
|
# ifdef CONFIG_INITRD_TAG
|
|
static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
|
|
ulong initrd_end);
|
|
# endif
|
|
static void setup_end_tag(struct bd_info *bd);
|
|
|
|
static struct tag *params;
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
|
|
|
|
int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
|
|
{
|
|
struct bd_info *bd = gd->bd;
|
|
char *s;
|
|
int machid = bd->bi_arch_number;
|
|
void (*theKernel)(int zero, int arch, uint params);
|
|
|
|
#ifdef CONFIG_CMDLINE_TAG
|
|
char *commandline = env_get("bootargs");
|
|
#endif
|
|
|
|
/*
|
|
* allow the PREP bootm subcommand, it is required for bootm to work
|
|
*/
|
|
if (flag & BOOTM_STATE_OS_PREP)
|
|
return 0;
|
|
|
|
if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
|
|
return 1;
|
|
|
|
theKernel = (void (*)(int, int, uint))images->ep;
|
|
|
|
s = env_get("machid");
|
|
if (s) {
|
|
machid = simple_strtoul(s, NULL, 16);
|
|
printf("Using machid 0x%x from environment\n", machid);
|
|
}
|
|
|
|
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
|
|
|
|
debug("## Transferring control to Linux (at address %08lx) ...\n",
|
|
(ulong)theKernel);
|
|
|
|
if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
|
|
#ifdef CONFIG_OF_LIBFDT
|
|
debug("using: FDT\n");
|
|
if (image_setup_linux(images)) {
|
|
printf("FDT creation failed! hanging...");
|
|
hang();
|
|
}
|
|
#endif
|
|
} else if (BOOTM_ENABLE_TAGS) {
|
|
#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined(CONFIG_CMDLINE_TAG) || \
|
|
defined(CONFIG_INITRD_TAG) || \
|
|
defined(CONFIG_SERIAL_TAG) || \
|
|
defined(CONFIG_REVISION_TAG)
|
|
setup_start_tag(bd);
|
|
#ifdef CONFIG_SERIAL_TAG
|
|
setup_serial_tag(¶ms);
|
|
#endif
|
|
#ifdef CONFIG_REVISION_TAG
|
|
setup_revision_tag(¶ms);
|
|
#endif
|
|
#ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
setup_memory_tags(bd);
|
|
#endif
|
|
#ifdef CONFIG_CMDLINE_TAG
|
|
setup_commandline_tag(bd, commandline);
|
|
#endif
|
|
#ifdef CONFIG_INITRD_TAG
|
|
if (images->rd_start && images->rd_end)
|
|
setup_initrd_tag(bd, images->rd_start, images->rd_end);
|
|
#endif
|
|
setup_end_tag(bd);
|
|
#endif
|
|
|
|
/* we assume that the kernel is in place */
|
|
printf("\nStarting kernel ...\n\n");
|
|
|
|
#ifdef CONFIG_USB_DEVICE
|
|
{
|
|
extern void udc_disconnect(void);
|
|
udc_disconnect();
|
|
}
|
|
#endif
|
|
}
|
|
cleanup_before_linux();
|
|
if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
|
|
theKernel(0, machid, (unsigned long)images->ft_addr);
|
|
else
|
|
theKernel(0, machid, bd->bi_boot_params);
|
|
/* does not return */
|
|
|
|
return 1;
|
|
}
|
|
|
|
#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
|
|
defined(CONFIG_CMDLINE_TAG) || \
|
|
defined(CONFIG_INITRD_TAG) || \
|
|
defined(CONFIG_SERIAL_TAG) || \
|
|
defined(CONFIG_REVISION_TAG)
|
|
static void setup_start_tag(struct bd_info *bd)
|
|
{
|
|
params = (struct tag *)bd->bi_boot_params;
|
|
|
|
params->hdr.tag = ATAG_CORE;
|
|
params->hdr.size = tag_size(tag_core);
|
|
|
|
params->u.core.flags = 0;
|
|
params->u.core.pagesize = 0;
|
|
params->u.core.rootdev = 0;
|
|
|
|
params = tag_next(params);
|
|
}
|
|
|
|
#ifdef CONFIG_SETUP_MEMORY_TAGS
|
|
static void setup_memory_tags(struct bd_info *bd)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
|
|
params->hdr.tag = ATAG_MEM;
|
|
params->hdr.size = tag_size(tag_mem32);
|
|
|
|
params->u.mem.start = bd->bi_dram[i].start;
|
|
params->u.mem.size = bd->bi_dram[i].size;
|
|
|
|
params = tag_next(params);
|
|
}
|
|
}
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS */
|
|
|
|
static void setup_commandline_tag(struct bd_info *bd, char *commandline)
|
|
{
|
|
char *p;
|
|
|
|
if (!commandline)
|
|
return;
|
|
|
|
/* eat leading white space */
|
|
for (p = commandline; *p == ' '; p++)
|
|
;
|
|
|
|
/* skip non-existent command lines so the kernel will still
|
|
* use its default command line.
|
|
*/
|
|
if (*p == '\0')
|
|
return;
|
|
|
|
params->hdr.tag = ATAG_CMDLINE;
|
|
params->hdr.size =
|
|
(sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
|
|
|
|
strcpy(params->u.cmdline.cmdline, p)
|
|
;
|
|
|
|
params = tag_next(params);
|
|
}
|
|
|
|
#ifdef CONFIG_INITRD_TAG
|
|
static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
|
|
ulong initrd_end)
|
|
{
|
|
/* an ATAG_INITRD node tells the kernel where the compressed
|
|
* ramdisk can be found. ATAG_RDIMG is a better name, actually.
|
|
*/
|
|
params->hdr.tag = ATAG_INITRD2;
|
|
params->hdr.size = tag_size(tag_initrd);
|
|
|
|
params->u.initrd.start = initrd_start;
|
|
params->u.initrd.size = initrd_end - initrd_start;
|
|
|
|
params = tag_next(params);
|
|
}
|
|
#endif /* CONFIG_INITRD_TAG */
|
|
|
|
#ifdef CONFIG_SERIAL_TAG
|
|
void setup_serial_tag(struct tag **tmp)
|
|
{
|
|
struct tag *params = *tmp;
|
|
struct tag_serialnr serialnr;
|
|
void get_board_serial(struct tag_serialnr *serialnr);
|
|
|
|
get_board_serial(&serialnr);
|
|
params->hdr.tag = ATAG_SERIAL;
|
|
params->hdr.size = tag_size(tag_serialnr);
|
|
params->u.serialnr.low = serialnr.low;
|
|
params->u.serialnr.high = serialnr.high;
|
|
params = tag_next(params);
|
|
*tmp = params;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_REVISION_TAG
|
|
void setup_revision_tag(struct tag **in_params)
|
|
{
|
|
u32 rev = 0;
|
|
u32 get_board_rev(void);
|
|
|
|
rev = get_board_rev();
|
|
params->hdr.tag = ATAG_REVISION;
|
|
params->hdr.size = tag_size(tag_revision);
|
|
params->u.revision.rev = rev;
|
|
params = tag_next(params);
|
|
}
|
|
#endif /* CONFIG_REVISION_TAG */
|
|
|
|
static void setup_end_tag(struct bd_info *bd)
|
|
{
|
|
params->hdr.tag = ATAG_NONE;
|
|
params->hdr.size = 0;
|
|
}
|
|
|
|
#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
|