[U-Boot] [PATCH v2 04/11] efi_loader: Use map_sysmem() in bootefi command

Alexander Graf
2018-06-14T18:22:25Z

The bootefi command gets a few addresses as values passed in. In sandbox,
these values are in U-Boot address space, so we need to make sure we
explicitly call map_sysmem() on them to be able to access them.

Signed-off-by: Alexander Graf <agraf@suse.de>
---
cmd/bootefi.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/cmd/bootefi.c b/cmd/bootefi.c
index f55a40dc84..a86a2bd4a9 100644
--- a/cmd/bootefi.c
+++ b/cmd/bootefi.c
@@ -14,6 +14,7 @@
#include <errno.h>
#include <linux/libfdt.h>
#include <linux/libfdt_env.h>
+#include <mapmem.h>
#include <memalign.h>
#include <asm/global_data.h>
#include <asm-generic/sections.h>
@@ -389,7 +390,8 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
unsigned long addr;
char *saddr;
efi_status_t r;
- void *fdt_addr;
+ unsigned long fdt_addr;
+ void *fdt;

/* Allow unaligned memory access */
allow_unaligned();
@@ -406,11 +408,12 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
return CMD_RET_USAGE;

if (argc > 2) {
- fdt_addr = (void *)simple_strtoul(argv[2], NULL, 16);
+ fdt_addr = simple_strtoul(argv[2], NULL, 16);
if (!fdt_addr && *argv[2] != '0')
return CMD_RET_USAGE;
/* Install device tree */
- r = efi_install_fdt(fdt_addr);
+ fdt = map_sysmem(fdt_addr, 0);
+ r = efi_install_fdt(fdt);
if (r != EFI_SUCCESS) {
printf("ERROR: failed to install device tree\n");
return CMD_RET_FAILURE;
@@ -429,7 +432,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
addr = simple_strtoul(saddr, NULL, 16);
else
addr = CONFIG_SYS_LOAD_ADDR;
- memcpy((char *)addr, __efi_helloworld_begin, size);
+ memcpy(map_sysmem(addr, size), __efi_helloworld_begin, size);
} else
#endif
#ifdef CONFIG_CMD_BOOTEFI_SELFTEST
@@ -475,7 +478,7 @@ static int do_bootefi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
}

printf("## Starting EFI application at %08lx ...\n", addr);
- r = do_bootefi_exec((void *)addr, bootefi_device_path,
+ r = do_bootefi_exec(map_sysmem(addr, 0), bootefi_device_path,
bootefi_image_path);
printf("## Application terminated, r = %lu\n",
r & ~EFI_ERROR_MASK);
--
2.12.3