+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <command.h>
+#include <dm/device.h>
+#include <dm/root.h>
+#include <errno.h>
+#include <fdt_support.h>
#include <image.h>
#include <u-boot/zlib.h>
#include <asm/bootparam.h>
+#include <asm/cpu.h>
#include <asm/byteorder.h>
#include <asm/zimage.h>
+#ifdef CONFIG_SYS_COREBOOT
+#include <asm/arch/timestamp.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
#define COMMAND_LINE_OFFSET 0x9000
-/*cmd_boot.c*/
-int do_bootm_linux(int flag, int argc, char * const argv[],
- bootm_headers_t *images)
+void bootm_announce_and_cleanup(void)
{
- struct boot_params *base_ptr = NULL;
- ulong os_data, os_len;
- image_header_t *hdr;
- void *load_address;
+ printf("\nStarting kernel ...\n\n");
-#if defined(CONFIG_FIT)
- const void *data;
- size_t len;
+#ifdef CONFIG_SYS_COREBOOT
+ timestamp_add_now(TS_U_BOOT_START_KERNEL);
+#endif
+ bootstage_mark_name(BOOTSTAGE_ID_BOOTM_HANDOFF, "start_kernel");
+#ifdef CONFIG_BOOTSTAGE_REPORT
+ bootstage_report();
#endif
- if (flag & BOOTM_STATE_OS_PREP)
- return 0;
- if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
- return 1;
+ /*
+ * Call remove function of all devices with a removal flag set.
+ * This may be useful for last-stage operations, like cancelling
+ * of DMA operation or releasing device internal buffers.
+ */
+ dm_remove_devices_flags(DM_REMOVE_ACTIVE_ALL);
+}
+
+#if defined(CONFIG_OF_LIBFDT) && !defined(CONFIG_OF_NO_KERNEL)
+int arch_fixup_memory_node(void *blob)
+{
+ bd_t *bd = gd->bd;
+ int bank;
+ u64 start[CONFIG_NR_DRAM_BANKS];
+ u64 size[CONFIG_NR_DRAM_BANKS];
+
+ for (bank = 0; bank < CONFIG_NR_DRAM_BANKS; bank++) {
+ start[bank] = bd->bi_dram[bank].start;
+ size[bank] = bd->bi_dram[bank].size;
+ }
+ return fdt_fixup_memory_banks(blob, start, size, CONFIG_NR_DRAM_BANKS);
+}
+#endif
+
+/* Subcommand: PREP */
+static int boot_prep_linux(bootm_headers_t *images)
+{
+ char *cmd_line_dest = NULL;
+ image_header_t *hdr;
+ int is_zimage = 0;
+ void *data = NULL;
+ size_t len;
+ int ret;
+
+#ifdef CONFIG_OF_LIBFDT
+ if (images->ft_len) {
+ debug("using: FDT\n");
+ if (image_setup_linux(images)) {
+ puts("FDT creation failed! hanging...");
+ hang();
+ }
+ }
+#endif
if (images->legacy_hdr_valid) {
hdr = images->legacy_hdr_os;
if (image_check_type(hdr, IH_TYPE_MULTI)) {
+ ulong os_data, os_len;
+
/* if multi-part image, we need to get first subimage */
image_multi_getimg(hdr, 0, &os_data, &os_len);
+ data = (void *)os_data;
+ len = os_len;
} else {
/* otherwise get image data */
- os_data = image_get_data(hdr);
- os_len = image_get_data_size(hdr);
+ data = (void *)image_get_data(hdr);
+ len = image_get_data_size(hdr);
}
+ is_zimage = 1;
#if defined(CONFIG_FIT)
- } else if (images->fit_uname_os) {
- int ret;
-
+ } else if (images->fit_uname_os && is_zimage) {
ret = fit_image_get_data(images->fit_hdr_os,
- images->fit_noffset_os, &data, &len);
+ images->fit_noffset_os,
+ (const void **)&data, &len);
if (ret) {
puts("Can't get image data/size!\n");
goto error;
}
- os_data = (ulong)data;
- os_len = (ulong)len;
+ is_zimage = 1;
#endif
- } else {
- puts("Could not find kernel image!\n");
- goto error;
}
-#ifdef CONFIG_CMD_ZBOOT
- base_ptr = load_zimage((void *)os_data, os_len, &load_address);
-#endif
+ if (is_zimage) {
+ ulong load_address;
+ char *base_ptr;
- if (NULL == base_ptr) {
- printf("## Kernel loading failed ...\n");
+ base_ptr = (char *)load_zimage(data, len, &load_address);
+ images->os.load = load_address;
+ cmd_line_dest = base_ptr + COMMAND_LINE_OFFSET;
+ images->ep = (ulong)base_ptr;
+ } else if (images->ep) {
+ cmd_line_dest = (void *)images->ep + COMMAND_LINE_OFFSET;
+ } else {
+ printf("## Kernel loading failed (missing x86 kernel setup) ...\n");
goto error;
}
- if (setup_zimage(base_ptr, (char *)base_ptr + COMMAND_LINE_OFFSET,
+ printf("Setup at %#08lx\n", images->ep);
+ ret = setup_zimage((void *)images->ep, cmd_line_dest,
0, images->rd_start,
- images->rd_end - images->rd_start)) {
+ images->rd_end - images->rd_start);
+
+ if (ret) {
printf("## Setting up boot parameters failed ...\n");
- goto error;
+ return 1;
}
- boot_zimage(base_ptr, load_address);
- /* does not return */
+ return 0;
error:
return 1;
}
+
+int boot_linux_kernel(ulong setup_base, ulong load_address, bool image_64bit)
+{
+ bootm_announce_and_cleanup();
+
+#ifdef CONFIG_SYS_COREBOOT
+ timestamp_add_now(TS_U_BOOT_START_KERNEL);
+#endif
+ if (image_64bit) {
+ if (!cpu_has_64bit()) {
+ puts("Cannot boot 64-bit kernel on 32-bit machine\n");
+ return -EFAULT;
+ }
+ /* At present 64-bit U-Boot does not support booting a
+ * kernel.
+ * TODO(sjg@chromium.org): Support booting both 32-bit and
+ * 64-bit kernels from 64-bit U-Boot.
+ */
+#if !CONFIG_IS_ENABLED(X86_64)
+ return cpu_jump_to_64bit(setup_base, load_address);
+#endif
+ } else {
+ /*
+ * Set %ebx, %ebp, and %edi to 0, %esi to point to the
+ * boot_params structure, and then jump to the kernel. We
+ * assume that %cs is 0x10, 4GB flat, and read/execute, and
+ * the data segments are 0x18, 4GB flat, and read/write.
+ * U-Boot is setting them up that way for itself in
+ * arch/i386/cpu/cpu.c.
+ *
+ * Note that we cannot currently boot a kernel while running as
+ * an EFI application. Please use the payload option for that.
+ */
+#ifndef CONFIG_EFI_APP
+ __asm__ __volatile__ (
+ "movl $0, %%ebp\n"
+ "cli\n"
+ "jmp *%[kernel_entry]\n"
+ :: [kernel_entry]"a"(load_address),
+ [boot_params] "S"(setup_base),
+ "b"(0), "D"(0)
+ );
+#endif
+ }
+
+ /* We can't get to here */
+ return -EFAULT;
+}
+
+/* Subcommand: GO */
+static int boot_jump_linux(bootm_headers_t *images)
+{
+ debug("## Transferring control to Linux (at address %08lx, kernel %08lx) ...\n",
+ images->ep, images->os.load);
+
+ return boot_linux_kernel(images->ep, images->os.load,
+ images->os.arch == IH_ARCH_X86_64);
+}
+
+int do_bootm_linux(int flag, int argc, char * const argv[],
+ bootm_headers_t *images)
+{
+ /* No need for those on x86 */
+ if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
+ return -1;
+
+ if (flag & BOOTM_STATE_OS_PREP)
+ return boot_prep_linux(images);
+
+ if (flag & BOOTM_STATE_OS_GO)
+ return boot_jump_linux(images);
+
+ return boot_jump_linux(images);
+}
projects / u-boot / blobdiff