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u-boot/common/bootm_os.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style 
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000-2009
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
#include <common.h>
#include <bootm.h>
#include <fdt_support.h>
#include <linux/libfdt.h>
#include <malloc.h>
#include <vxworks.h>
#include <tee/optee.h>
DECLARE_GLOBAL_DATA_PTR;
static int do_bootm_standalone(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
char *s;
int (*appl)(int, char *const[]);
/* Don't start if "autostart" is set to "no" */
s = env_get("autostart");
if ((s != NULL) && !strcmp(s, "no")) {
env_set_hex("filesize", images->os.image_len);
return 0;
}
appl = (int (*)(int, char * const []))images->ep;
appl(argc, argv);
return 0;
}
/*******************************************************************/
/* OS booting routines */
/*******************************************************************/
#if defined(CONFIG_BOOTM_NETBSD) || defined(CONFIG_BOOTM_PLAN9)
static void copy_args(char *dest, int argc, char * const argv[], char delim)
{
int i;
for (i = 0; i < argc; i++) {
if (i > 0)
*dest++ = delim;
strcpy(dest, argv[i]);
dest += strlen(argv[i]);
}
}
#endif
#ifdef CONFIG_BOOTM_NETBSD
static int do_bootm_netbsd(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*loader)(bd_t *, image_header_t *, char *, char *);
image_header_t *os_hdr, *hdr;
ulong kernel_data, kernel_len;
char *cmdline;
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("NetBSD");
return 1;
}
#endif
hdr = images->legacy_hdr_os;
/*
* Booting a (NetBSD) kernel image
*
* This process is pretty similar to a standalone application:
* The (first part of an multi-) image must be a stage-2 loader,
* which in turn is responsible for loading & invoking the actual
* kernel. The only differences are the parameters being passed:
* besides the board info strucure, the loader expects a command
* line, the name of the console device, and (optionally) the
* address of the original image header.
*/
os_hdr = NULL;
if (image_check_type(&images->legacy_hdr_os_copy, IH_TYPE_MULTI)) {
image_multi_getimg(hdr, 1, &kernel_data, &kernel_len);
if (kernel_len)
os_hdr = hdr;
}
if (argc > 0) {
ulong len;
int i;
for (i = 0, len = 0; i < argc; i += 1)
len += strlen(argv[i]) + 1;
cmdline = malloc(len);
copy_args(cmdline, argc, argv, ' ');
} else {
cmdline = env_get("bootargs");
if (cmdline == NULL)
cmdline = "";
}
loader = (void (*)(bd_t *, image_header_t *, char *, char *))images->ep;
printf("## Transferring control to NetBSD stage-2 loader (at address %08lx) ...\n",
(ulong)loader);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* NetBSD Stage-2 Loader Parameters:
* arg[0]: pointer to board info data
* arg[1]: image load address
* arg[2]: char pointer to the console device to use
* arg[3]: char pointer to the boot arguments
*/
(*loader)(gd->bd, os_hdr, "", cmdline);
return 1;
}
#endif /* CONFIG_BOOTM_NETBSD*/
#ifdef CONFIG_LYNXKDI
static int do_bootm_lynxkdi(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
image_header_t *hdr = &images->legacy_hdr_os_copy;
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("Lynx");
return 1;
}
#endif
lynxkdi_boot((image_header_t *)hdr);
return 1;
}
#endif /* CONFIG_LYNXKDI */
#ifdef CONFIG_BOOTM_RTEMS
static int do_bootm_rtems(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*entry_point)(bd_t *);
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("RTEMS");
return 1;
}
#endif
entry_point = (void (*)(bd_t *))images->ep;
printf("## Transferring control to RTEMS (at address %08lx) ...\n",
(ulong)entry_point);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* RTEMS Parameters:
* r3: ptr to board info data
*/
(*entry_point)(gd->bd);
return 1;
}
#endif /* CONFIG_BOOTM_RTEMS */
#if defined(CONFIG_BOOTM_OSE)
static int do_bootm_ose(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*entry_point)(void);
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("OSE");
return 1;
}
#endif
entry_point = (void (*)(void))images->ep;
printf("## Transferring control to OSE (at address %08lx) ...\n",
(ulong)entry_point);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* OSE Parameters:
* None
*/
(*entry_point)();
return 1;
}
#endif /* CONFIG_BOOTM_OSE */
#if defined(CONFIG_BOOTM_PLAN9)
static int do_bootm_plan9(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*entry_point)(void);
char *s;
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("Plan 9");
return 1;
}
#endif
/* See README.plan9 */
s = env_get("confaddr");
if (s != NULL) {
char *confaddr = (char *)simple_strtoul(s, NULL, 16);
if (argc > 0) {
copy_args(confaddr, argc, argv, '\n');
} else {
s = env_get("bootargs");
if (s != NULL)
strcpy(confaddr, s);
}
}
entry_point = (void (*)(void))images->ep;
printf("## Transferring control to Plan 9 (at address %08lx) ...\n",
(ulong)entry_point);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* Plan 9 Parameters:
* None
*/
(*entry_point)();
return 1;
}
#endif /* CONFIG_BOOTM_PLAN9 */
#if defined(CONFIG_BOOTM_VXWORKS) && \
(defined(CONFIG_PPC) || defined(CONFIG_ARM))
void do_bootvx_fdt(bootm_headers_t *images)
{
#if defined(CONFIG_OF_LIBFDT)
int ret;
char *bootline;
ulong of_size = images->ft_len;
char **of_flat_tree = &images->ft_addr;
struct lmb *lmb = &images->lmb;
if (*of_flat_tree) {
boot_fdt_add_mem_rsv_regions(lmb, *of_flat_tree);
ret = boot_relocate_fdt(lmb, of_flat_tree, &of_size);
if (ret)
return;
/* Update ethernet nodes */
fdt_fixup_ethernet(*of_flat_tree);
ret = fdt_add_subnode(*of_flat_tree, 0, "chosen");
if ((ret >= 0 || ret == -FDT_ERR_EXISTS)) {
bootline = env_get("bootargs");
if (bootline) {
ret = fdt_find_and_setprop(*of_flat_tree,
"/chosen", "bootargs",
bootline,
strlen(bootline) + 1, 1);
if (ret < 0) {
printf("## ERROR: %s : %s\n", __func__,
fdt_strerror(ret));
return;
}
}
} else {
printf("## ERROR: %s : %s\n", __func__,
fdt_strerror(ret));
return;
}
}
#endif
boot_prep_vxworks(images);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
#if defined(CONFIG_OF_LIBFDT)
printf("## Starting vxWorks at 0x%08lx, device tree at 0x%08lx ...\n",
(ulong)images->ep, (ulong)*of_flat_tree);
#else
printf("## Starting vxWorks at 0x%08lx\n", (ulong)images->ep);
#endif
boot_jump_vxworks(images);
puts("## vxWorks terminated\n");
}
static int do_bootm_vxworks(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("VxWorks");
return 1;
}
#endif
do_bootvx_fdt(images);
return 1;
}
#endif
#if defined(CONFIG_CMD_ELF)
static int do_bootm_qnxelf(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
char *local_args[2];
char str[16];
int dcache;
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("QNX");
return 1;
}
#endif
sprintf(str, "%lx", images->ep); /* write entry-point into string */
local_args[0] = argv[0];
local_args[1] = str; /* and provide it via the arguments */
/*
* QNX images require the data cache is disabled.
*/
dcache = dcache_status();
if (dcache)
dcache_disable();
do_bootelf(NULL, 0, 2, local_args);
if (dcache)
dcache_enable();
return 1;
}
#endif
#ifdef CONFIG_INTEGRITY
static int do_bootm_integrity(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*entry_point)(void);
if (flag != BOOTM_STATE_OS_GO)
return 0;
#if defined(CONFIG_FIT)
if (!images->legacy_hdr_valid) {
fit_unsupported_reset("INTEGRITY");
return 1;
}
#endif
entry_point = (void (*)(void))images->ep;
printf("## Transferring control to INTEGRITY (at address %08lx) ...\n",
(ulong)entry_point);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* INTEGRITY Parameters:
* None
*/
(*entry_point)();
return 1;
}
#endif
#ifdef CONFIG_BOOTM_OPENRTOS
static int do_bootm_openrtos(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
void (*entry_point)(void);
if (flag != BOOTM_STATE_OS_GO)
return 0;
entry_point = (void (*)(void))images->ep;
printf("## Transferring control to OpenRTOS (at address %08lx) ...\n",
(ulong)entry_point);
bootstage_mark(BOOTSTAGE_ID_RUN_OS);
/*
* OpenRTOS Parameters:
* None
*/
(*entry_point)();
return 1;
}
#endif
#ifdef CONFIG_BOOTM_OPTEE
static int do_bootm_tee(int flag, int argc, char * const argv[],
bootm_headers_t *images)
{
int ret;
/* Verify OS type */
if (images->os.os != IH_OS_TEE) {
return 1;
};
/* Validate OPTEE header */
ret = optee_verify_bootm_image(images->os.image_start,
images->os.load,
images->os.image_len);
if (ret)
return ret;
/* Locate FDT etc */
ret = bootm_find_images(flag, argc, argv);
if (ret)
return ret;
/* From here we can run the regular linux boot path */
return do_bootm_linux(flag, argc, argv, images);
}
#endif
static boot_os_fn *boot_os[] = {
[IH_OS_U_BOOT] = do_bootm_standalone,
#ifdef CONFIG_BOOTM_LINUX
[IH_OS_LINUX] = do_bootm_linux,
#endif
#ifdef CONFIG_BOOTM_NETBSD
[IH_OS_NETBSD] = do_bootm_netbsd,
#endif
#ifdef CONFIG_LYNXKDI
[IH_OS_LYNXOS] = do_bootm_lynxkdi,
#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))
[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
};
/* Allow for arch specific config before we boot */
__weak void arch_preboot_os(void)
{
/* please define platform specific arch_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();
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];
}
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