@@ -104,6 +104,13 @@ static int sb_cmdline_cb_command(struct sandbox_state *state, const char *arg)
}
SB_CMDLINE_OPT_SHORT(command, 'c', 1, "Execute U-Boot command");
+static int sb_cmdline_cb_fdt(struct sandbox_state *state, const char *arg)
+{
+ state->fdt_fname = arg;
+ return 0;
+}
+SB_CMDLINE_OPT_SHORT(fdt, 'd', 1, "Specify U-Boot's control FDT");
+
int main(int argc, char *argv[])
{
struct sandbox_state *state;
@@ -34,6 +34,7 @@ enum exit_type_id {
/* The complete state of the test system */
struct sandbox_state {
const char *cmd; /* Command to execute */
+ const char *fdt_fname; /* Filename of FDT binary */
enum exit_type_id exit_type; /* How we exited U-Boot */
const char *parse_err; /* Error to report from parsing */
int argc; /* Program arguments */
@@ -31,6 +31,7 @@
#include <version.h>
#include <environment.h>
#include <fdtdec.h>
+#include <fs.h>
#if defined(CONFIG_CMD_IDE)
#include <ide.h>
#endif
@@ -305,6 +306,55 @@ __weak int arch_cpu_init(void)
return 0;
}
+#ifdef CONFIG_OF_HOSTFILE
+
+#define CHECK(x) err = (x); if (err) goto failed;
+
+/* Create an empty device tree blob */
+static int make_empty_fdt(void *fdt)
+{
+ int err;
+
+ CHECK(fdt_create(fdt, 256));
+ CHECK(fdt_finish_reservemap(fdt));
+ CHECK(fdt_begin_node(fdt, ""));
+ CHECK(fdt_end_node(fdt));
+ CHECK(fdt_finish(fdt));
+
+ return 0;
+failed:
+ printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
+ return -EACCES;
+}
+
+static int read_fdt_from_file(void)
+{
+ struct sandbox_state *state = state_get_current();
+ void *blob;
+ int size;
+ int err;
+
+ blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
+ if (!state->fdt_fname) {
+ err = make_empty_fdt(blob);
+ if (!err)
+ goto done;
+ return err;
+ }
+ err = fs_set_blk_dev("host", NULL, FS_TYPE_SANDBOX);
+ if (err)
+ return err;
+ size = fs_read(state->fdt_fname, CONFIG_SYS_FDT_LOAD_ADDR, 0, 0);
+ if (size < 0)
+ return -EIO;
+
+done:
+ gd->fdt_blob = blob;
+
+ return 0;
+}
+#endif
+
#ifdef CONFIG_SANDBOX
static int setup_ram_buf(void)
{
@@ -328,6 +378,11 @@ static int setup_fdt(void)
# else
gd->fdt_blob = (ulong *)&_end;
# endif
+#elif defined(CONFIG_OF_HOSTFILE)
+ if (read_fdt_from_file()) {
+ puts("Failed to read control FDT\n");
+ return -1;
+ }
#endif
/* Allow the early environment to override the fdt address */
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
@@ -142,7 +142,11 @@ join the two:
and then flash image.bin onto your board.
-You cannot use both of these options at the same time.
+If CONFIG_OF_HOSTFILE is defined, then it will be read from a file on
+startup. This is only useful for sandbox. Use the -d flag to U-Boot to
+specify the file to read.
+
+You cannot use more than one of these options at the same time.
If you wish to put the fdt at a different address in memory, you can
define the "fdtcontroladdr" environment variable. This is the hex
@@ -26,6 +26,7 @@
#define CONFIG_SANDBOX_BITS_PER_LONG 64
#define CONFIG_OF_CONTROL
+#define CONFIG_OF_HOSTFILE
#define CONFIG_OF_LIBFDT
#define CONFIG_LMB
@@ -71,6 +72,7 @@
#define CONFIG_SYS_MEMTEST_START 0x00100000
#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_MEMTEST_START + 0x1000)
#define CONFIG_PHYS_64BIT
+#define CONFIG_SYS_FDT_LOAD_ADDR 0x1000000
/* Size of our emulated memory */
#define CONFIG_SYS_SDRAM_BASE 0
With sandbox it is tricky to add an FDT to the image at build time (or later) since we build an ELF file, not a plain binary, and the address space of the whole U-Boot is not accessible in the emulated memory map of sandbox. Sandbox can read files directly from the host, though, so add an option to read an FDT from a host file on start-up. Signed-off-by: Simon Glass <sjg@chromium.org> --- Changes in v3: - Add CONFIG_OF_HOSTFILE support to generic board instead of sandbox Changes in v2: - Fix typo "os defined" -> "is defined" - Use gd->arch.ram_buf instead of gd->ram_buf (now that generic board is in) - Fix checkpatch warnings about split strings arch/sandbox/cpu/start.c | 7 +++++ arch/sandbox/include/asm/state.h | 1 + common/board_f.c | 55 ++++++++++++++++++++++++++++++++++++++++ doc/README.fdt-control | 6 ++++- include/configs/sandbox.h | 2 ++ 5 files changed, 70 insertions(+), 1 deletion(-)