mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +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+
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/*
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* Copyright (C) 2011 Andes Technology Corporation
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* Shawn Lin, Andes Technology Corporation <nobuhiro@andestech.com>
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* Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
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*/
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#include <common.h>
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#include <bootstage.h>
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#include <command.h>
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#include <env.h>
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#include <hang.h>
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#include <image.h>
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#include <log.h>
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#include <u-boot/zlib.h>
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#include <asm/byteorder.h>
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#include <asm/bootm.h>
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DECLARE_GLOBAL_DATA_PTR;
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#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
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defined(CONFIG_CMDLINE_TAG) || \
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defined(CONFIG_INITRD_TAG) || \
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defined(CONFIG_SERIAL_TAG) || \
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defined(CONFIG_REVISION_TAG)
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static void setup_start_tag(struct bd_info *bd);
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# ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags(struct bd_info *bd);
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# endif
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static void setup_commandline_tag(struct bd_info *bd, char *commandline);
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# ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
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ulong initrd_end);
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# endif
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static void setup_end_tag(struct bd_info *bd);
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static struct tag *params;
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#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
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int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
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{
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struct bd_info *bd = gd->bd;
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char *s;
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int machid = bd->bi_arch_number;
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void (*theKernel)(int zero, int arch, uint params);
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#ifdef CONFIG_CMDLINE_TAG
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char *commandline = env_get("bootargs");
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#endif
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/*
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* allow the PREP bootm subcommand, it is required for bootm to work
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*/
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if (flag & BOOTM_STATE_OS_PREP)
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return 0;
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if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
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return 1;
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theKernel = (void (*)(int, int, uint))images->ep;
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s = env_get("machid");
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if (s) {
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machid = simple_strtoul(s, NULL, 16);
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printf("Using machid 0x%x from environment\n", machid);
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}
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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debug("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong)theKernel);
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if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len) {
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#ifdef CONFIG_OF_LIBFDT
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debug("using: FDT\n");
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if (image_setup_linux(images)) {
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printf("FDT creation failed! hanging...");
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hang();
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}
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#endif
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} else if (BOOTM_ENABLE_TAGS) {
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#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
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defined(CONFIG_CMDLINE_TAG) || \
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defined(CONFIG_INITRD_TAG) || \
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defined(CONFIG_SERIAL_TAG) || \
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defined(CONFIG_REVISION_TAG)
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setup_start_tag(bd);
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#ifdef CONFIG_SERIAL_TAG
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setup_serial_tag(¶ms);
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#endif
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#ifdef CONFIG_REVISION_TAG
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setup_revision_tag(¶ms);
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#endif
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#ifdef CONFIG_SETUP_MEMORY_TAGS
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setup_memory_tags(bd);
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#endif
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#ifdef CONFIG_CMDLINE_TAG
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setup_commandline_tag(bd, commandline);
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#endif
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#ifdef CONFIG_INITRD_TAG
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if (images->rd_start && images->rd_end)
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setup_initrd_tag(bd, images->rd_start, images->rd_end);
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#endif
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setup_end_tag(bd);
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#endif
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/* we assume that the kernel is in place */
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printf("\nStarting kernel ...\n\n");
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#ifdef CONFIG_USB_DEVICE
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{
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extern void udc_disconnect(void);
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udc_disconnect();
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}
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#endif
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}
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cleanup_before_linux();
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if (IMAGE_ENABLE_OF_LIBFDT && images->ft_len)
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theKernel(0, machid, (unsigned long)images->ft_addr);
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else
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theKernel(0, machid, bd->bi_boot_params);
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/* does not return */
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return 1;
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}
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#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
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defined(CONFIG_CMDLINE_TAG) || \
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defined(CONFIG_INITRD_TAG) || \
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defined(CONFIG_SERIAL_TAG) || \
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defined(CONFIG_REVISION_TAG)
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static void setup_start_tag(struct bd_info *bd)
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{
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params = (struct tag *)bd->bi_boot_params;
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params->hdr.tag = ATAG_CORE;
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params->hdr.size = tag_size(tag_core);
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params->u.core.flags = 0;
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params->u.core.pagesize = 0;
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params->u.core.rootdev = 0;
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params = tag_next(params);
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}
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#ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags(struct bd_info *bd)
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{
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int i;
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for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
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params->hdr.tag = ATAG_MEM;
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params->hdr.size = tag_size(tag_mem32);
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params->u.mem.start = bd->bi_dram[i].start;
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params->u.mem.size = bd->bi_dram[i].size;
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params = tag_next(params);
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}
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}
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#endif /* CONFIG_SETUP_MEMORY_TAGS */
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static void setup_commandline_tag(struct bd_info *bd, char *commandline)
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{
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char *p;
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if (!commandline)
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return;
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/* eat leading white space */
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for (p = commandline; *p == ' '; p++)
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;
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/* skip non-existent command lines so the kernel will still
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* use its default command line.
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*/
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if (*p == '\0')
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return;
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params->hdr.tag = ATAG_CMDLINE;
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params->hdr.size =
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(sizeof(struct tag_header) + strlen(p) + 1 + 4) >> 2;
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strcpy(params->u.cmdline.cmdline, p)
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;
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params = tag_next(params);
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}
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#ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag(struct bd_info *bd, ulong initrd_start,
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ulong initrd_end)
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{
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/* an ATAG_INITRD node tells the kernel where the compressed
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* ramdisk can be found. ATAG_RDIMG is a better name, actually.
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*/
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params->hdr.tag = ATAG_INITRD2;
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params->hdr.size = tag_size(tag_initrd);
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params->u.initrd.start = initrd_start;
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params->u.initrd.size = initrd_end - initrd_start;
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params = tag_next(params);
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}
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#endif /* CONFIG_INITRD_TAG */
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#ifdef CONFIG_SERIAL_TAG
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void setup_serial_tag(struct tag **tmp)
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{
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struct tag *params = *tmp;
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struct tag_serialnr serialnr;
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void get_board_serial(struct tag_serialnr *serialnr);
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get_board_serial(&serialnr);
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params->hdr.tag = ATAG_SERIAL;
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params->hdr.size = tag_size(tag_serialnr);
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params->u.serialnr.low = serialnr.low;
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params->u.serialnr.high = serialnr.high;
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params = tag_next(params);
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*tmp = params;
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}
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#endif
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#ifdef CONFIG_REVISION_TAG
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void setup_revision_tag(struct tag **in_params)
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{
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u32 rev = 0;
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u32 get_board_rev(void);
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rev = get_board_rev();
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params->hdr.tag = ATAG_REVISION;
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params->hdr.size = tag_size(tag_revision);
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params->u.revision.rev = rev;
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params = tag_next(params);
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}
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#endif /* CONFIG_REVISION_TAG */
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static void setup_end_tag(struct bd_info *bd)
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{
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params->hdr.tag = ATAG_NONE;
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params->hdr.size = 0;
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}
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#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
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