diff options
Diffstat (limited to 'arch/sandbox')
| -rw-r--r-- | arch/sandbox/cpu/cpu.c | 41 | ||||
| -rw-r--r-- | arch/sandbox/include/asm/u-boot-sandbox.h | 8 |
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_ */ |