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https://github.com/AsahiLinux/u-boot
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7839865272
This has different semantics in different places. Go with the bootm method and put it in a common function so that the behaviour is consistent in U-Boot. Update the docs. To be clear, this changes the way that 'bootelf' and standalone boot work. Before, if autostart was set to "fred" or "YES", for example, they would consider that a "yes". This may change behaviour for some boards, but the only in-tree boards which mention autostart use "no" to disable it, which will still work. Signed-off-by: Simon Glass <sjg@chromium.org> Suggested-by: Wolfgang Denk <wd@denx.de>
625 lines
13 KiB
C
625 lines
13 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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#include <common.h>
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#include <bootm.h>
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#include <bootstage.h>
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#include <cpu_func.h>
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#include <efi_loader.h>
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#include <env.h>
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#include <fdt_support.h>
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#include <image.h>
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#include <lmb.h>
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#include <log.h>
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#include <asm/global_data.h>
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#include <linux/libfdt.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <vxworks.h>
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#include <tee/optee.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int do_bootm_standalone(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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int (*appl)(int, char *const[]);
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if (!env_get_autostart()) {
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env_set_hex("filesize", images->os.image_len);
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return 0;
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}
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appl = (int (*)(int, char * const []))images->ep;
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appl(argc, argv);
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return 0;
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}
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/*******************************************************************/
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/* OS booting routines */
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/*******************************************************************/
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#if defined(CONFIG_BOOTM_NETBSD) || defined(CONFIG_BOOTM_PLAN9)
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static void copy_args(char *dest, int argc, char *const argv[], char delim)
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{
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int i;
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for (i = 0; i < argc; i++) {
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if (i > 0)
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*dest++ = delim;
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strcpy(dest, argv[i]);
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dest += strlen(argv[i]);
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}
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}
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#endif
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static void __maybe_unused fit_unsupported_reset(const char *msg)
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{
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if (CONFIG_IS_ENABLED(FIT_VERBOSE)) {
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printf("! FIT images not supported for '%s' - must reset board to recover!\n",
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msg);
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}
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}
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#ifdef CONFIG_BOOTM_NETBSD
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static int do_bootm_netbsd(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*loader)(struct bd_info *, image_header_t *, char *, char *);
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image_header_t *os_hdr, *hdr;
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ulong kernel_data, kernel_len;
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char *cmdline;
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("NetBSD");
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return 1;
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}
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#endif
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hdr = images->legacy_hdr_os;
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/*
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* Booting a (NetBSD) kernel image
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*
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* This process is pretty similar to a standalone application:
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* The (first part of an multi-) image must be a stage-2 loader,
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* which in turn is responsible for loading & invoking the actual
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* kernel. The only differences are the parameters being passed:
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* besides the board info strucure, the loader expects a command
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* line, the name of the console device, and (optionally) the
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* address of the original image header.
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*/
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os_hdr = NULL;
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if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
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image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
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if (kernel_len)
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os_hdr = hdr;
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}
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if (argc > 0) {
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ulong len;
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int i;
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for (i = 0, len = 0; i < argc; i += 1)
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len += strlen(argv[i]) + 1;
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cmdline = malloc(len);
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copy_args(cmdline, argc, argv, ' ');
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} else {
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cmdline = env_get("bootargs");
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if (cmdline == NULL)
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cmdline = "";
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}
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loader = (void (*)(struct bd_info *, image_header_t *, char *, char *))images->ep;
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printf("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n",
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(ulong)loader);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* NetBSD Stage-2 Loader Parameters:
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* arg[0]: pointer to board info data
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* arg[1]: image load address
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* arg[2]: char pointer to the console device to use
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* arg[3]: char pointer to the boot arguments
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*/
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(*loader)(gd->bd, os_hdr, "", cmdline);
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return 1;
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}
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#endif /* CONFIG_BOOTM_NETBSD*/
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#ifdef CONFIG_BOOTM_RTEMS
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static int do_bootm_rtems(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*entry_point)(struct bd_info *);
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("RTEMS");
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return 1;
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}
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#endif
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entry_point = (void (*)(struct bd_info *))images->ep;
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printf("## Transferring control to RTEMS (at address %08lx) ...\n",
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(ulong)entry_point);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* RTEMS Parameters:
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* r3: ptr to board info data
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*/
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(*entry_point)(gd->bd);
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return 1;
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}
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#endif /* CONFIG_BOOTM_RTEMS */
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#if defined(CONFIG_BOOTM_OSE)
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static int do_bootm_ose(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*entry_point)(void);
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("OSE");
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return 1;
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}
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#endif
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entry_point = (void (*)(void))images->ep;
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printf("## Transferring control to OSE (at address %08lx) ...\n",
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(ulong)entry_point);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* OSE Parameters:
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* None
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*/
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(*entry_point)();
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return 1;
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}
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#endif /* CONFIG_BOOTM_OSE */
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#if defined(CONFIG_BOOTM_PLAN9)
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static int do_bootm_plan9(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*entry_point)(void);
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char *s;
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("Plan 9");
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return 1;
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}
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#endif
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/* See README.plan9 */
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s = env_get("confaddr");
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if (s != NULL) {
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char *confaddr = (char *)hextoul(s, NULL);
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if (argc > 0) {
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copy_args(confaddr, argc, argv, '\n');
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} else {
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s = env_get("bootargs");
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if (s != NULL)
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strcpy(confaddr, s);
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}
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}
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entry_point = (void (*)(void))images->ep;
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printf("## Transferring control to Plan 9 (at address %08lx) ...\n",
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(ulong)entry_point);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* Plan 9 Parameters:
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* None
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*/
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(*entry_point)();
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return 1;
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}
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#endif /* CONFIG_BOOTM_PLAN9 */
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#if defined(CONFIG_BOOTM_VXWORKS) && \
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(defined(CONFIG_PPC) || defined(CONFIG_ARM))
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static void do_bootvx_fdt(bootm_headers_t *images)
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{
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#if defined(CONFIG_OF_LIBFDT)
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int ret;
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char *bootline;
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ulong of_size = images->ft_len;
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char **of_flat_tree = &images->ft_addr;
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struct lmb *lmb = &images->lmb;
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if (*of_flat_tree) {
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boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
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ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
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if (ret)
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return;
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/* Update ethernet nodes */
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fdt_fixup_ethernet(*of_flat_tree);
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ret = fdt_add_subnode(*of_flat_tree, 0, "chosen");
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if ((ret >= 0 || ret == -FDT_ERR_EXISTS)) {
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bootline = env_get("bootargs");
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if (bootline) {
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ret = fdt_find_and_setprop(*of_flat_tree,
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"/chosen", "bootargs",
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bootline,
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strlen(bootline) + 1, 1);
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if (ret < 0) {
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printf("## ERROR: %s : %s\n", __func__,
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fdt_strerror(ret));
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return;
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}
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}
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} else {
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printf("## ERROR: %s : %s\n", __func__,
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fdt_strerror(ret));
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return;
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}
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}
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#endif
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boot_prep_vxworks(images);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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#if defined(CONFIG_OF_LIBFDT)
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printf("## Starting vxWorks at 0x%08lx, device tree at 0x%08lx ...\n",
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(ulong)images->ep, (ulong)*of_flat_tree);
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#else
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printf("## Starting vxWorks at 0x%08lx\n", (ulong)images->ep);
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#endif
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boot_jump_vxworks(images);
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puts("## vxWorks terminated\n");
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}
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static int do_bootm_vxworks_legacy(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("VxWorks");
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return 1;
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}
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#endif
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do_bootvx_fdt(images);
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return 1;
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}
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int do_bootm_vxworks(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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char *bootargs;
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int pos;
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unsigned long vxflags;
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bool std_dtb = false;
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/* get bootargs env */
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bootargs = env_get("bootargs");
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if (bootargs != NULL) {
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for (pos = 0; pos < strlen(bootargs); pos++) {
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/* find f=0xnumber flag */
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if ((bootargs[pos] == '=') && (pos >= 1) &&
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(bootargs[pos - 1] == 'f')) {
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vxflags = hextoul(&bootargs[pos + 1], NULL);
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if (vxflags & VXWORKS_SYSFLG_STD_DTB)
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std_dtb = true;
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}
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}
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}
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if (std_dtb) {
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if (flag & BOOTM_STATE_OS_PREP)
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printf(" Using standard DTB\n");
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return do_bootm_linux(flag, argc, argv, images);
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} else {
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if (flag & BOOTM_STATE_OS_PREP)
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printf(" !!! WARNING !!! Using legacy DTB\n");
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return do_bootm_vxworks_legacy(flag, argc, argv, images);
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}
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}
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#endif
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#if defined(CONFIG_CMD_ELF)
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static int do_bootm_qnxelf(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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char *local_args[2];
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char str[16];
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int dcache;
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("QNX");
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return 1;
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}
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#endif
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sprintf(str, "%lx", images->ep); /* write entry-point into string */
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local_args[0] = argv[0];
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local_args[1] = str; /* and provide it via the arguments */
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/*
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* QNX images require the data cache is disabled.
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*/
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dcache = dcache_status();
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if (dcache)
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dcache_disable();
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do_bootelf(NULL, 0, 2, local_args);
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if (dcache)
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dcache_enable();
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return 1;
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}
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#endif
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#ifdef CONFIG_INTEGRITY
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static int do_bootm_integrity(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*entry_point)(void);
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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#if defined(CONFIG_FIT)
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if (!images->legacy_hdr_valid) {
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fit_unsupported_reset("INTEGRITY");
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return 1;
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}
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#endif
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entry_point = (void (*)(void))images->ep;
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printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
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(ulong)entry_point);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* INTEGRITY Parameters:
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* None
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*/
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(*entry_point)();
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return 1;
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}
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#endif
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#ifdef CONFIG_BOOTM_OPENRTOS
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static int do_bootm_openrtos(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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void (*entry_point)(void);
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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entry_point = (void (*)(void))images->ep;
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printf("## Transferring control to OpenRTOS (at address %08lx) ...\n",
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(ulong)entry_point);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/*
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* OpenRTOS Parameters:
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* None
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*/
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(*entry_point)();
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return 1;
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}
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#endif
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#ifdef CONFIG_BOOTM_OPTEE
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static int do_bootm_tee(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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int ret;
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/* Verify OS type */
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if (images->os.os != IH_OS_TEE) {
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return 1;
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};
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/* Validate OPTEE header */
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ret = optee_verify_bootm_image(images->os.image_start,
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images->os.load,
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images->os.image_len);
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if (ret)
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return ret;
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/* Locate FDT etc */
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ret = bootm_find_images(flag, argc, argv, 0, 0);
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if (ret)
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return ret;
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/* From here we can run the regular linux boot path */
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return do_bootm_linux(flag, argc, argv, images);
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}
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#endif
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#ifdef CONFIG_BOOTM_EFI
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static int do_bootm_efi(int flag, int argc, char *const argv[],
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bootm_headers_t *images)
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{
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int ret;
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efi_status_t efi_ret;
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void *image_buf;
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if (flag != BOOTM_STATE_OS_GO)
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return 0;
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/* Locate FDT, if provided */
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ret = bootm_find_images(flag, argc, argv, 0, 0);
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if (ret)
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return ret;
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/* Initialize EFI drivers */
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efi_ret = efi_init_obj_list();
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if (efi_ret != EFI_SUCCESS) {
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printf("## Failed to initialize UEFI sub-system: r = %lu\n",
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efi_ret & ~EFI_ERROR_MASK);
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return 1;
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}
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/* Install device tree */
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efi_ret = efi_install_fdt(images->ft_len
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? images->ft_addr : EFI_FDT_USE_INTERNAL);
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if (efi_ret != EFI_SUCCESS) {
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printf("## Failed to install device tree: r = %lu\n",
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efi_ret & ~EFI_ERROR_MASK);
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return 1;
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}
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/* Run EFI image */
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printf("## Transferring control to EFI (at address %08lx) ...\n",
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images->ep);
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bootstage_mark(BOOTSTAGE_ID_RUN_OS);
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/* We expect to return */
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images->os.type = IH_TYPE_STANDALONE;
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image_buf = map_sysmem(images->ep, images->os.image_len);
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efi_ret = efi_run_image(image_buf, images->os.image_len);
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if (efi_ret != EFI_SUCCESS)
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return 1;
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return 0;
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}
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#endif
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static boot_os_fn *boot_os[] = {
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[IH_OS_U_BOOT] = do_bootm_standalone,
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#ifdef CONFIG_BOOTM_LINUX
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[IH_OS_LINUX] = do_bootm_linux,
|
|
#endif
|
|
#ifdef CONFIG_BOOTM_NETBSD
|
|
[IH_OS_NETBSD] = do_bootm_netbsd,
|
|
#endif
|
|
#ifdef CONFIG_BOOTM_RTEMS
|
|
[IH_OS_RTEMS] = do_bootm_rtems,
|
|
#endif
|
|
#if defined(CONFIG_BOOTM_OSE)
|
|
[IH_OS_OSE] = do_bootm_ose,
|
|
#endif
|
|
#if defined(CONFIG_BOOTM_PLAN9)
|
|
[IH_OS_PLAN9] = do_bootm_plan9,
|
|
#endif
|
|
#if defined(CONFIG_BOOTM_VXWORKS) && \
|
|
(defined(CONFIG_PPC) || defined(CONFIG_ARM) || defined(CONFIG_RISCV))
|
|
[IH_OS_VXWORKS] = do_bootm_vxworks,
|
|
#endif
|
|
#if defined(CONFIG_CMD_ELF)
|
|
[IH_OS_QNX] = do_bootm_qnxelf,
|
|
#endif
|
|
#ifdef CONFIG_INTEGRITY
|
|
[IH_OS_INTEGRITY] = do_bootm_integrity,
|
|
#endif
|
|
#ifdef CONFIG_BOOTM_OPENRTOS
|
|
[IH_OS_OPENRTOS] = do_bootm_openrtos,
|
|
#endif
|
|
#ifdef CONFIG_BOOTM_OPTEE
|
|
[IH_OS_TEE] = do_bootm_tee,
|
|
#endif
|
|
#ifdef CONFIG_BOOTM_EFI
|
|
[IH_OS_EFI] = do_bootm_efi,
|
|
#endif
|
|
};
|
|
|
|
/* Allow for arch specific config before we boot */
|
|
__weak void arch_preboot_os(void)
|
|
{
|
|
/* please define platform specific arch_preboot_os() */
|
|
}
|
|
|
|
/* Allow for board specific config before we boot */
|
|
__weak void board_preboot_os(void)
|
|
{
|
|
/* please define board specific board_preboot_os() */
|
|
}
|
|
|
|
int boot_selected_os(int argc, char *const argv[], int state,
|
|
bootm_headers_t *images, boot_os_fn *boot_fn)
|
|
{
|
|
arch_preboot_os();
|
|
board_preboot_os();
|
|
boot_fn(state, argc, argv, images);
|
|
|
|
/* Stand-alone may return when 'autostart' is 'no' */
|
|
if (images->os.type == IH_TYPE_STANDALONE ||
|
|
IS_ENABLED(CONFIG_SANDBOX) ||
|
|
state == BOOTM_STATE_OS_FAKE_GO) /* We expect to return */
|
|
return 0;
|
|
bootstage_error(BOOTSTAGE_ID_BOOT_OS_RETURNED);
|
|
debug("\n## Control returned to monitor - resetting...\n");
|
|
|
|
return BOOTM_ERR_RESET;
|
|
}
|
|
|
|
boot_os_fn *bootm_os_get_boot_func(int os)
|
|
{
|
|
#ifdef CONFIG_NEEDS_MANUAL_RELOC
|
|
static bool relocated;
|
|
|
|
if (!relocated) {
|
|
int i;
|
|
|
|
/* relocate boot function table */
|
|
for (i = 0; i < ARRAY_SIZE(boot_os); i++)
|
|
if (boot_os[i] != NULL)
|
|
boot_os[i] += gd->reloc_off;
|
|
|
|
relocated = true;
|
|
}
|
|
#endif
|
|
return boot_os[os];
|
|
}
|