mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
241 lines
5.6 KiB
C
241 lines
5.6 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 <command.h>
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#include <image.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(bd_t *bd);
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# ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags(bd_t *bd);
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# endif
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static void setup_commandline_tag(bd_t *bd, char *commandline);
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# ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag(bd_t *bd, ulong initrd_start, ulong initrd_end);
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# endif
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static void setup_end_tag(bd_t *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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bd_t *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(bd_t *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(bd_t *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(bd_t *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(bd_t *bd, ulong initrd_start, 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(bd_t *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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