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authorSimon Glass <sjg@chromium.org>2015-02-27 22:06:34 -0700
committerSimon Glass <sjg@chromium.org>2015-04-23 09:05:53 -0600
commitb45122fdf5d314ef1f492b051fb104a7b48b8079 (patch)
tree172f0b1da254a3413a35607c5888b5780fb95da3 /arch/sandbox
parent5a87c4174d18fe40dcc847ba36853a9f15cb3e1e (diff)
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fdt: sandbox: Move setup code from board_f to fdtdec
We want to be able to set up the device tree in SPL, so move this code to a common place. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/sandbox')
-rw-r--r--arch/sandbox/cpu/cpu.c41
-rw-r--r--arch/sandbox/include/asm/u-boot-sandbox.h8
2 files changed, 49 insertions, 0 deletions
diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c
index f0dafed..168f2ef 100644
--- a/arch/sandbox/cpu/cpu.c
+++ b/arch/sandbox/cpu/cpu.c
@@ -6,6 +6,7 @@
#include <common.h>
#include <dm/root.h>
#include <os.h>
+#include <asm/io.h>
#include <asm/state.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -97,3 +98,43 @@ phys_addr_t map_to_sysmem(const void *ptr)
void flush_dcache_range(unsigned long start, unsigned long stop)
{
}
+
+int sandbox_read_fdt_from_file(void)
+{
+ struct sandbox_state *state = state_get_current();
+ const char *fname = state->fdt_fname;
+ void *blob;
+ loff_t size;
+ int err;
+ int fd;
+
+ blob = map_sysmem(CONFIG_SYS_FDT_LOAD_ADDR, 0);
+ if (!state->fdt_fname) {
+ err = fdt_create_empty_tree(blob, 256);
+ if (!err)
+ goto done;
+ printf("Unable to create empty FDT: %s\n", fdt_strerror(err));
+ return -EINVAL;
+ }
+
+ err = os_get_filesize(fname, &size);
+ if (err < 0) {
+ printf("Failed to file FDT file '%s'\n", fname);
+ return err;
+ }
+ fd = os_open(fname, OS_O_RDONLY);
+ if (fd < 0) {
+ printf("Failed to open FDT file '%s'\n", fname);
+ return -EACCES;
+ }
+ if (os_read(fd, blob, size) != size) {
+ os_close(fd);
+ return -EIO;
+ }
+ os_close(fd);
+
+done:
+ gd->fdt_blob = blob;
+
+ return 0;
+}
diff --git a/arch/sandbox/include/asm/u-boot-sandbox.h b/arch/sandbox/include/asm/u-boot-sandbox.h
index d5b9361..da87cc3 100644
--- a/arch/sandbox/include/asm/u-boot-sandbox.h
+++ b/arch/sandbox/include/asm/u-boot-sandbox.h
@@ -75,4 +75,12 @@ int pci_unmap_physmem(const void *addr, unsigned long len,
*/
void sandbox_set_enable_pci_map(int enable);
+/**
+ * sandbox_read_fdt_from_file() - Read a device tree from a file
+ *
+ * Read a device tree file from a host file and set it up for use as the
+ * control FDT.
+ */
+int sandbox_read_fdt_from_file(void);
+
#endif /* _U_BOOT_SANDBOX_H_ */