mirror of
git://projects.qi-hardware.com/xburst-tools.git
synced 2024-11-26 23:29:42 +02:00
phase2: separate parameter setup from try_this_kernel
It's still huge, but less painful to read. Signed-off-by: Werner Almesberger <werner@openmoko.org>
This commit is contained in:
Werner Almesberger
Andy Green
parent
5c75acae12
commit
545f0662ef
@ -96,19 +96,94 @@ int read_file(const char * filepath, u8 * destination, int size)
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return len;
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return len;
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}
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}
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static void do_params(unsigned initramfs_len,
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const char *commandline_rootfs_append)
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{
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const struct board_variant * board_variant =
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(this_board->get_board_variant)();
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const char *p;
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char * cmdline;
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struct tag *params = (struct tag *)this_board->linux_tag_placement;
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/* eat leading white space */
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for (p = this_board->commandline_board; *p == ' '; p++);
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/* first tag */
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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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/* revision tag */
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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 = board_variant->machine_revision;
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params = tag_next(params);
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/* memory tags */
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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 = this_board->linux_mem_start;
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params->u.mem.size = this_board->linux_mem_size;
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params = tag_next(params);
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if (this_kernel->initramfs_filepath) {
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/* INITRD2 tag */
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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 = this_board->linux_mem_start +
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INITRD_OFFSET;
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params->u.initrd.size = initramfs_len;
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params = tag_next(params);
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}
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/* kernel commandline */
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cmdline = params->u.cmdline.cmdline;
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cmdline += strlen(strcpy(cmdline, p));
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if (this_kernel->commandline_append)
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cmdline += strlen(strcpy(cmdline,
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this_kernel->commandline_append));
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if (commandline_rootfs_append[0])
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cmdline += strlen(strcpy(cmdline,
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commandline_rootfs_append));
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/*
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* if he's still holding down the UI_ACTION_SKIPKERNEL key
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* now we finished loading the kernel, take it to mean he wants
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* to have the debugging options added to the commandline
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*/
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if (this_board->commandline_board_debug && this_board->get_ui_keys)
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if ((this_board->get_ui_keys)() & UI_ACTION_SKIPKERNEL)
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cmdline += strlen(strcpy(cmdline, this_board->
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commandline_board_debug));
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params->hdr.tag = ATAG_CMDLINE;
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params->hdr.size = (sizeof(struct tag_header) +
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strlen(params->u.cmdline.cmdline) + 1 + 4) >> 2;
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puts(" Cmdline: ");
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puts(params->u.cmdline.cmdline);
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puts("\n");
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params = tag_next(params);
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/* needs to always be the last tag */
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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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static void try_this_kernel(void)
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static void try_this_kernel(void)
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{
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{
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void (*the_kernel)(int zero, int arch, uint params);
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void (*the_kernel)(int zero, int arch, uint params);
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const struct board_variant * board_variant =
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(this_board->get_board_variant)();
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unsigned int initramfs_len = 0;
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unsigned int initramfs_len = 0;
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static char commandline_rootfs_append[512] = "";
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static char commandline_rootfs_append[512] = "";
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static void * last_block_init = NULL;
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static void * last_block_init = NULL;
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static int last_block_init_result = 0;
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static int last_block_init_result = 0;
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int ret;
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int ret;
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const char *p;
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char * cmdline;
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struct tag *params = (struct tag *)this_board->linux_tag_placement;
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void * kernel_dram = (void *)this_board->linux_mem_start + 0x8000;
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void * kernel_dram = (void *)this_board->linux_mem_start + 0x8000;
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unsigned long crc;
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unsigned long crc;
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image_header_t *hdr;
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image_header_t *hdr;
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@ -117,9 +192,6 @@ static void try_this_kernel(void)
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partition_offset_blocks = 0;
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partition_offset_blocks = 0;
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partition_length_blocks = 0;
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partition_length_blocks = 0;
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/* eat leading white space */
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for (p = this_board->commandline_board; *p == ' '; p++);
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puts("\nTrying kernel: ");
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puts("\nTrying kernel: ");
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puts(this_kernel->name);
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puts(this_kernel->name);
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puts("\n");
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puts("\n");
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@ -271,72 +343,7 @@ static void try_this_kernel(void)
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the_kernel = (void (*)(int, int, uint))
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the_kernel = (void (*)(int, int, uint))
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(((char *)hdr) + sizeof(image_header_t));
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(((char *)hdr) + sizeof(image_header_t));
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/* first tag */
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do_params(initramfs_len, commandline_rootfs_append);
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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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/* revision tag */
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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 = board_variant->machine_revision;
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params = tag_next(params);
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/* memory tags */
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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 = this_board->linux_mem_start;
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params->u.mem.size = this_board->linux_mem_size;
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params = tag_next(params);
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if (this_kernel->initramfs_filepath) {
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/* INITRD2 tag */
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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 = this_board->linux_mem_start +
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INITRD_OFFSET;
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params->u.initrd.size = initramfs_len;
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params = tag_next(params);
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}
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/* kernel commandline */
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cmdline = params->u.cmdline.cmdline;
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cmdline += strlen(strcpy(cmdline, p));
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if (this_kernel->commandline_append)
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cmdline += strlen(strcpy(cmdline,
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this_kernel->commandline_append));
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if (commandline_rootfs_append[0])
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cmdline += strlen(strcpy(cmdline,
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commandline_rootfs_append));
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/*
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* if he's still holding down the UI_ACTION_SKIPKERNEL key
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* now we finished loading the kernel, take it to mean he wants
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* to have the debugging options added to the commandline
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*/
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if (this_board->commandline_board_debug && this_board->get_ui_keys)
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if ((this_board->get_ui_keys)() & UI_ACTION_SKIPKERNEL)
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cmdline += strlen(strcpy(cmdline, this_board->
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commandline_board_debug));
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params->hdr.tag = ATAG_CMDLINE;
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params->hdr.size = (sizeof(struct tag_header) +
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strlen(params->u.cmdline.cmdline) + 1 + 4) >> 2;
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puts(" Cmdline: ");
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puts(params->u.cmdline.cmdline);
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puts("\n");
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params = tag_next(params);
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/* needs to always be the last tag */
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params->hdr.tag = ATAG_NONE;
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params->hdr.size = 0;
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/* give board implementation a chance to shut down
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/* give board implementation a chance to shut down
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* anything it may have going on, leave GPIO set for Linux
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* anything it may have going on, leave GPIO set for Linux
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