-/*
+/* Copyright (C) 2011
+ * Corscience GmbH & Co. KG - Simon Schwarz <schwarz@corscience.de>
+ * - Added prep subcommand support
+ * - Reorganized source - modeled after powerpc version
+ *
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/byteorder.h>
+#include <fdt.h>
+#include <libfdt.h>
+#include <fdt_support.h>
+#include <asm/bootm.h>
+#include <linux/compiler.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 (bd_t *bd);
-
-# ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags (bd_t *bd);
-# endif
-static void setup_commandline_tag (bd_t *bd, char *commandline);
-
-# ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag (bd_t *bd, ulong initrd_start,
- ulong initrd_end);
-# endif
-static void setup_end_tag (bd_t *bd);
-
+#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
+ defined(CONFIG_CMDLINE_TAG) || \
+ defined(CONFIG_INITRD_TAG) || \
+ defined(CONFIG_SERIAL_TAG) || \
+ defined(CONFIG_REVISION_TAG)
static struct tag *params;
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
+#endif
-int do_bootm_linux(int flag, int argc, char * const argv[], bootm_headers_t *images)
+static ulong get_sp(void)
{
- bd_t *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 = getenv ("bootargs");
-#endif
+ ulong ret;
- if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
- return 1;
+ asm("mov %0, sp" : "=r"(ret) : );
+ return ret;
+}
- theKernel = (void (*)(int, int, uint))images->ep;
+void arch_lmb_reserve(struct lmb *lmb)
+{
+ ulong sp;
+
+ /*
+ * Booting a (Linux) kernel image
+ *
+ * Allocate space for command line and board info - the
+ * address should be as high as possible within the reach of
+ * the kernel (see CONFIG_SYS_BOOTMAPSZ settings), but in unused
+ * memory, which means far enough below the current stack
+ * pointer.
+ */
+ sp = get_sp();
+ debug("## Current stack ends at 0x%08lx ", sp);
- s = getenv ("machid");
- if (s) {
- machid = simple_strtoul (s, NULL, 16);
- printf ("Using machid 0x%x from environment\n", machid);
- }
+ /* adjust sp by 4K to be safe */
+ sp -= 4096;
+ lmb_reserve(lmb, sp,
+ gd->bd->bi_dram[0].start + gd->bd->bi_dram[0].size - sp);
+}
- show_boot_progress (15);
+#ifdef CONFIG_OF_LIBFDT
+static int fixup_memory_node(void *blob)
+{
+ bd_t *bd = gd->bd;
+ int bank;
+ u64 start[CONFIG_NR_DRAM_BANKS];
+ u64 size[CONFIG_NR_DRAM_BANKS];
- debug ("## Transferring control to Linux (at address %08lx) ...\n",
- (ulong) theKernel);
+ for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+ start[bank] = bd->bi_dram[bank].start;
+ size[bank] = bd->bi_dram[bank].size;
+ }
-#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);
+ return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS);
+}
#endif
-#ifdef CONFIG_INITRD_TAG
- if (images->rd_start && images->rd_end)
- setup_initrd_tag (bd, images->rd_start, images->rd_end);
+
+static void announce_and_cleanup(void)
+{
+ printf("\nStarting kernel ...\n\n");
+ bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
+#ifdef CONFIG_BOOTSTAGE_FDT
+ bootstage_fdt_add_report();
#endif
- setup_end_tag (bd);
+#ifdef CONFIG_BOOTSTAGE_REPORT
+ bootstage_report();
#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 ();
- }
+ udc_disconnect();
#endif
-
- cleanup_before_linux ();
-
- theKernel (0, machid, bd->bi_boot_params);
- /* does not return */
-
- return 1;
+ cleanup_before_linux();
}
-
-#if defined (CONFIG_SETUP_MEMORY_TAGS) || \
- defined (CONFIG_CMDLINE_TAG) || \
- defined (CONFIG_INITRD_TAG) || \
- defined (CONFIG_SERIAL_TAG) || \
- defined (CONFIG_REVISION_TAG)
+#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 (bd_t *bd)
{
- params = (struct tag *) bd->bi_boot_params;
+ params = (struct tag *)bd->bi_boot_params;
params->hdr.tag = ATAG_CORE;
params->hdr.size = tag_size (tag_core);
params = tag_next (params);
}
-
+#endif
#ifdef CONFIG_SETUP_MEMORY_TAGS
-static void setup_memory_tags (bd_t *bd)
+static void setup_memory_tags(bd_t *bd)
{
int i;
params = tag_next (params);
}
}
-#endif /* CONFIG_SETUP_MEMORY_TAGS */
-
+#endif
-static void setup_commandline_tag (bd_t *bd, char *commandline)
+#ifdef CONFIG_CMDLINE_TAG
+static void setup_commandline_tag(bd_t *bd, char *commandline)
{
char *p;
params = tag_next (params);
}
-
+#endif
#ifdef CONFIG_INITRD_TAG
-static void setup_initrd_tag (bd_t *bd, ulong initrd_start, ulong initrd_end)
+static void setup_initrd_tag(bd_t *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 = tag_next (params);
}
-#endif /* CONFIG_INITRD_TAG */
+#endif
#ifdef CONFIG_SERIAL_TAG
-void setup_serial_tag (struct tag **tmp)
+void setup_serial_tag(struct tag **tmp)
{
struct tag *params = *tmp;
struct tag_serialnr serialnr;
params->u.revision.rev = rev;
params = tag_next (params);
}
-#endif /* CONFIG_REVISION_TAG */
-
+#endif
-static void setup_end_tag (bd_t *bd)
+#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_end_tag(bd_t *bd)
{
params->hdr.tag = ATAG_NONE;
params->hdr.size = 0;
}
+#endif
+
+#ifdef CONFIG_OF_LIBFDT
+static int create_fdt(bootm_headers_t *images)
+{
+ ulong of_size = images->ft_len;
+ char **of_flat_tree = &images->ft_addr;
+ ulong *initrd_start = &images->initrd_start;
+ ulong *initrd_end = &images->initrd_end;
+ struct lmb *lmb = &images->lmb;
+ ulong rd_len;
+ int ret;
+
+ debug("using: FDT\n");
+
+ boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
+
+ rd_len = images->rd_end - images->rd_start;
+ ret = boot_ramdisk_high(lmb, images->rd_start, rd_len,
+ initrd_start, initrd_end);
+ if (ret)
+ return ret;
+
+ ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
+ if (ret)
+ return ret;
+
+ fdt_chosen(*of_flat_tree, 1);
+ fixup_memory_node(*of_flat_tree);
+ fdt_fixup_ethernet(*of_flat_tree);
+ fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
+#ifdef CONFIG_OF_BOARD_SETUP
+ ft_board_setup(*of_flat_tree, gd->bd);
+#endif
+
+ return 0;
+}
+#endif
+
+__weak void setup_board_tags(struct tag **in_params) {}
+
+/* Subcommand: PREP */
+static void boot_prep_linux(bootm_headers_t *images)
+{
+#ifdef CONFIG_CMDLINE_TAG
+ char *commandline = getenv("bootargs");
+#endif
+
+#ifdef CONFIG_OF_LIBFDT
+ if (images->ft_len) {
+ debug("using: FDT\n");
+ if (create_fdt(images)) {
+ printf("FDT creation failed! hanging...");
+ hang();
+ }
+ } else
+#endif
+ {
+#if defined(CONFIG_SETUP_MEMORY_TAGS) || \
+ defined(CONFIG_CMDLINE_TAG) || \
+ defined(CONFIG_INITRD_TAG) || \
+ defined(CONFIG_SERIAL_TAG) || \
+ defined(CONFIG_REVISION_TAG)
+ debug("using: ATAGS\n");
+ setup_start_tag(gd->bd);
+#ifdef CONFIG_SERIAL_TAG
+ setup_serial_tag(¶ms);
+#endif
+#ifdef CONFIG_CMDLINE_TAG
+ setup_commandline_tag(gd->bd, commandline);
+#endif
+#ifdef CONFIG_REVISION_TAG
+ setup_revision_tag(¶ms);
+#endif
+#ifdef CONFIG_SETUP_MEMORY_TAGS
+ setup_memory_tags(gd->bd);
+#endif
+#ifdef CONFIG_INITRD_TAG
+ if (images->rd_start && images->rd_end)
+ setup_initrd_tag(gd->bd, images->rd_start,
+ images->rd_end);
+#endif
+ setup_board_tags(¶ms);
+ setup_end_tag(gd->bd);
+#else /* all tags */
+ printf("FDT and ATAGS support not compiled in - hanging\n");
+ hang();
+#endif /* all tags */
+ }
+}
+
+/* Subcommand: GO */
+static void boot_jump_linux(bootm_headers_t *images)
+{
+ unsigned long machid = gd->bd->bi_arch_number;
+ char *s;
+ void (*kernel_entry)(int zero, int arch, uint params);
+ unsigned long r2;
+
+ kernel_entry = (void (*)(int, int, uint))images->ep;
+
+ s = getenv("machid");
+ if (s) {
+ strict_strtoul(s, 16, &machid);
+ printf("Using machid 0x%lx from environment\n", machid);
+ }
-#endif /* CONFIG_SETUP_MEMORY_TAGS || CONFIG_CMDLINE_TAG || CONFIG_INITRD_TAG */
+ debug("## Transferring control to Linux (at address %08lx)" \
+ "...\n", (ulong) kernel_entry);
+ bootstage_mark(BOOTSTAGE_ID_RUN_OS);
+ announce_and_cleanup();
+
+#ifdef CONFIG_OF_LIBFDT
+ if (images->ft_len)
+ r2 = (unsigned long)images->ft_addr;
+ else
+#endif
+ r2 = gd->bd->bi_boot_params;
+
+ kernel_entry(0, machid, r2);
+}
+
+/* Main Entry point for arm bootm implementation
+ *
+ * Modeled after the powerpc implementation
+ * DIFFERENCE: Instead of calling prep and go at the end
+ * they are called if subcommand is equal 0.
+ */
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+ /* No need for those on ARM */
+ if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
+ return -1;
+
+ if (flag & BOOTM_STATE_OS_PREP) {
+ boot_prep_linux(images);
+ return 0;
+ }
+
+ if (flag & BOOTM_STATE_OS_GO) {
+ boot_jump_linux(images);
+ return 0;
+ }
+
+ boot_prep_linux(images);
+ boot_jump_linux(images);
+ return 0;
+}
+
+#ifdef CONFIG_CMD_BOOTZ
+
+struct zimage_header {
+ uint32_t code[9];
+ uint32_t zi_magic;
+ uint32_t zi_start;
+ uint32_t zi_end;
+};
+
+#define LINUX_ARM_ZIMAGE_MAGIC 0x016f2818
+
+int bootz_setup(void *image, void **start, void **end)
+{
+ struct zimage_header *zi = (struct zimage_header *)image;
+
+ if (zi->zi_magic != LINUX_ARM_ZIMAGE_MAGIC) {
+ puts("Bad Linux ARM zImage magic!\n");
+ return 1;
+ }
+
+ *start = (void *)zi->zi_start;
+ *end = (void *)zi->zi_end;
+
+ debug("Kernel image @ 0x%08x [ 0x%08x - 0x%08x ]\n",
+ (uint32_t)image, (uint32_t)*start, (uint32_t)*end);
+
+ return 0;
+}
+#endif /* CONFIG_CMD_BOOTZ */
projects / platform / kernel / u-boot.git / blobdiff