cleanup do_bootm_linux()
This patch cleans up the do_bootm_linux() function. It removes most of the uggly ifdefery and replaces it by a sane function optimizing structure. Signed-off-by: Robert Schwebel <r.schwebel@pengutronix.de>
This commit is contained in:
parent
4ee1303b43
commit
7067e21f3f
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@ -21,44 +21,84 @@
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*
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*/
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#include <boot.h>
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#include <common.h>
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#include <command.h>
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#include <driver.h>
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#include <environment.h>
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#include <image.h>
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#include <zlib.h>
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#include <asm/byteorder.h>
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#include <asm/global_data.h>
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#include <asm/setup.h>
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#include <environment.h>
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#include <boot.h>
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#include <asm/u-boot-arm.h>
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static struct tag *params;
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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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defined (CONFIG_VFD) || \
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defined (CONFIG_LCD)
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static void setup_start_tag (void);
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defined (CONFIG_LCD) || \
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defined (CONFIG_VFD)
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static void __setup_start_tag(void);
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static void __setup_end_tag(void);
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#define setup_start_tag __setup_start_tag
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#define setup_end_tag __setup_end_tag
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#else
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#define setup_start_tag() do {} while(0)
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#define setup_end_tag() do {} while(0)
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#endif
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# ifdef CONFIG_SETUP_MEMORY_TAGS
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static void setup_memory_tags (void);
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# endif
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static void setup_commandline_tag (const char *commandline);
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#ifdef CONFIG_CMDLINE_TAG
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static void __setup_commandline_tag(const char *commandline);
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#define setup_commandline_tag __setup_commandline_tag
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#else
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#define setup_commandline_tag(a) do {} while(0)
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#endif
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# ifdef CONFIG_INITRD_TAG
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static void setup_initrd_tag (ulong initrd_start,
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ulong initrd_end);
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# endif
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static void setup_end_tag (void);
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#ifdef CONFIG_SETUP_MEMORY_TAGS
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static void __setup_memory_tags(void);
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#define setup_memory_tags __setup_memory_tags
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#else
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#define setup_memory_tags() do {} while(0)
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#endif
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#if 0
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#ifdef CONFIG_INITRD_TAG
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static void __setup_initrd_tag(ulong initrd_start, ulong initrd_end);
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#define setup_initrd_tag __setup_initrd_tag
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#else
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#define setup_initrd_tag(a,b) do {} while(0)
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#endif
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#endif
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extern ulong calc_fbsize(void);
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#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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static void __setup_videolfb_tag(gd_t *gd);
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#define setup_videolfb_tag __setup_videolfb_tag
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#else
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#define setup_videolfb_tag(a) do {} while(0)
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#endif
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#ifdef CONFIG_REVISION_TAG
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static void __setup_revision_tag(struct tag **in_params);
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#define setup_revision_tag __setup_revision_tag
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#else
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#define setup_revision_tag(a) do {} while(0)
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#endif
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#ifdef CONFIG_SERIAL_TAG
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void __setup_serial_tag(struct tag **tmp);
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#define setup_serial tag __setup_serial_tag
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#else
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#define setup_serial_tag(a) do {} while(0)
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#endif
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# if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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static void setup_videolfb_tag (gd_t *gd);
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# endif
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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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#ifdef CONFIG_SHOW_BOOT_PROGRESS
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# include <status_led.h>
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@ -68,13 +108,13 @@ static struct tag *params;
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#endif
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int do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd)
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int
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do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd)
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{
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void (*theKernel)(int zero, int arch, uint params);
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image_header_t *os_header = &os_handle->header;
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#ifdef CONFIG_CMDLINE_TAG
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const char *commandline = getenv ("bootargs");
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#endif
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if (os_header->ih_type == IH_TYPE_MULTI) {
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printf("Multifile images not handled at the moment\n");
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return -1;
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@ -84,38 +124,22 @@ int do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd)
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theKernel = (void (*)(int, int, uint))ntohl((unsigned long)(os_header->ih_ep));
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/* FIXME: replace by pr_debug */
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debug ("## Transferring control to Linux (at address %08lx) ...\n",
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(ulong) theKernel);
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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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defined (CONFIG_LCD) || \
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defined (CONFIG_VFD)
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setup_start_tag ();
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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 ();
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#endif
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#ifdef CONFIG_CMDLINE_TAG
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setup_commandline_tag (commandline);
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#endif
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#ifdef CONFIG_INITRD_TAG
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// if (initrd_start && initrd_end)
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// setup_initrd_tag (initrd_start, initrd_end);
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#endif
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#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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setup_videolfb_tag ((gd_t *) gd);
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#endif
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setup_end_tag ();
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setup_start_tag();
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setup_serial_tag(¶ms);
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setup_revision_tag(¶ms);
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setup_memory_tags();
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setup_commandline_tag(commandline);
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#if 0
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if (initrd_start && initrd_end)
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setup_initrd_tag (initrd_start, initrd_end);
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#endif
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setup_videolfb_tag((gd_t *) gd);
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setup_end_tag();
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if (relocate_image(os_handle, (void *)ntohl(os_header->ih_load)))
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return -1;
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@ -124,61 +148,55 @@ int do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd)
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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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extern void udc_disconnect(void);
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udc_disconnect();
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}
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#endif
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cleanup_before_linux ();
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cleanup_before_linux();
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theKernel (0, CONFIG_ARCH_NUMBER, CONFIG_BOOT_PARAMS);
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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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defined (CONFIG_LCD) || \
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defined (CONFIG_VFD)
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static void setup_start_tag (void)
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void
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__setup_start_tag(void)
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{
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params = (struct tag *) CONFIG_BOOT_PARAMS;
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params = (struct tag *)CONFIG_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->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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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 (void)
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void
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__setup_memory_tags(void)
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{
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struct device_d *dev = NULL;
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list_for_each_entry(dev, &device_list, list) {
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if (dev->type == DEVICE_TYPE_DRAM) {
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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->hdr.size = tag_size(tag_mem32);
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params->u.mem.start = dev->map_base;
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params->u.mem.size = dev->size;
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params = tag_next (params);
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params = tag_next(params);
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}
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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 (const char *commandline)
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void
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__setup_commandline_tag(const char *commandline)
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{
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const char *p;
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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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for (p = commandline; *p == ' '; p++) ;
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/* skip non-existent command lines so the kernel will still
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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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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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(sizeof (struct tag_header) + strlen(p) + 1 + 4) >> 2;
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strcpy (params->u.cmdline.cmdline, p);
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strcpy(params->u.cmdline.cmdline, p);
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params = tag_next (params);
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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 (ulong initrd_start, ulong initrd_end)
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void
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__setup_initrd_tag(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->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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params = tag_next(params);
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}
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#endif /* CONFIG_INITRD_TAG */
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#if defined (CONFIG_VFD) || defined (CONFIG_LCD)
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extern ulong calc_fbsize (void);
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static void setup_videolfb_tag (gd_t *gd)
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#if 0 /* FIXME: doesn't compile */
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void
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__setup_videolfb_tag(gd_t *gd)
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{
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/* An ATAG_VIDEOLFB node tells the kernel where and how large
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* the framebuffer for video was allocated (among other things).
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* in the tag_videolfb are not of interest.
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*/
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params->hdr.tag = ATAG_VIDEOLFB;
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params->hdr.size = tag_size (tag_videolfb);
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params->hdr.size = tag_size(tag_videolfb);
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params->u.videolfb.lfb_base = (u32) gd->fb_base;
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/* Fb size is calculated according to parameters for our panel
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*/
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params->u.videolfb.lfb_base = (u32)gd->fb_base;
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/* Fb size is calculated according to parameters for our panel */
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params->u.videolfb.lfb_size = calc_fbsize();
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params = tag_next (params);
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params = tag_next(params);
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}
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#endif /* CONFIG_VFD || CONFIG_LCD */
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#ifdef CONFIG_SERIAL_TAG
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void setup_serial_tag (struct tag **tmp)
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#endif
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#if 0 /* FIXME: doesn't compile */
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void
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__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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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->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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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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#if 0 /* FIXME: doesn't compile */
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void
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__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->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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params = tag_next(params);
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}
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#endif /* CONFIG_REVISION_TAG */
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#endif
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static void setup_end_tag (void)
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void
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__setup_end_tag (void)
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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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@ -1,11 +1,13 @@
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#ifndef __BOOT_H
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#define __BOOT_H
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#include <image.h>
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#ifdef CONFIG_OF_FLAT_TREE
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int do_bootm_linux(struct image_handle *os, struct image_handle *initrd,
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extern int do_bootm_linux(struct image_handle *os, struct image_handle *initrd,
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const char *oftree);
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#else
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int do_bootm_linux(struct image_handle *os, struct image_handle *initrd);
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extern int do_bootm_linux(struct image_handle *os, struct image_handle *initrd);
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#endif
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#endif /* __BOOT_H */
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@ -31,6 +31,8 @@
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#ifndef __IMAGE_H__
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#define __IMAGE_H__
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#include <linux/types.h>
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/*
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* Operating System Codes
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*/
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