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efi: Add support for a hello world test program

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It is useful to have a basic sanity check for EFI loader support. Add a
'bootefi hello' command which loads HelloWord.efi and runs it under U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
[agraf: Fix documentation, add unfulfilled kconfig dep]
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Simon Glass
2016-11-07 08:47:08 -07:00
committed by Alexander Graf
parent bb1ae55948
commit c7ae3dfdcc
7 changed files with 107 additions and 6 deletions
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9
cmd/Kconfig
View File

@@ -181,6 +181,15 @@ config CMD_BOOTEFI
help
Boot an EFI image from memory.
config CMD_BOOTEFI_HELLO
bool "Allow booting a standard EFI hello world for testing"
depends on CMD_BOOTEFI && NEED_CRT0_ENABLEMENT
help
This adds a standard EFI hello world application to U-Boot so that
it can be used with the 'bootefi hello' command. This is useful
for testing that EFI is working at a basic level, and for bringing
up EFI support on a new architecture.
config CMD_ELF
bool "bootelf, bootvx"
default y

27
cmd/bootefi.c
View File

@@ -239,13 +239,23 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if (argc < 2)
return CMD_RET_USAGE;
saddr = argv[1];
#ifdef CONFIG_CMD_BOOTEFI_HELLO
if (!strcmp(argv[1], "hello")) {
ulong size = __efi_hello_world_end - __efi_hello_world_begin;
addr = simple_strtoul(saddr, NULL, 16);
addr = CONFIG_SYS_LOAD_ADDR;
memcpy((char *)addr, __efi_hello_world_begin, size);
} else
#endif
{
saddr = argv[1];
if (argc > 2) {
sfdt = argv[2];
fdt_addr = simple_strtoul(sfdt, NULL, 16);
addr = simple_strtoul(saddr, NULL, 16);
if (argc > 2) {
sfdt = argv[2];
fdt_addr = simple_strtoul(sfdt, NULL, 16);
}
}
printf("## Starting EFI application at %08lx ...\n", addr);
@@ -263,7 +273,12 @@ static char bootefi_help_text[] =
"<image address> [fdt address]\n"
" - boot EFI payload stored at address <image address>.\n"
" If specified, the device tree located at <fdt address> gets\n"
" exposed as EFI configuration table.\n";
" exposed as EFI configuration table.\n"
#ifdef CONFIG_CMD_BOOTEFI_HELLO
"hello\n"
" - boot a sample Hello World application stored within U-Boot"
#endif
;
#endif
U_BOOT_CMD(