Move this code into a function to reduce code size and make it easier to understand. Drop the unnecessary 0x to help a little with code size.
Use this in bootm_find_images()
Signed-off-by: Simon Glass sjg@chromium.org ---
boot/bootm.c | 51 ++++++++++++++++++++++++++++++++++----------------- 1 file changed, 34 insertions(+), 17 deletions(-)
diff --git a/boot/bootm.c b/boot/bootm.c index 54e4b48e907c..a803b0749be0 100644 --- a/boot/bootm.c +++ b/boot/bootm.c @@ -467,6 +467,37 @@ static int bootm_find_os(const char *addr_fit) return 0; }
+/** + * check_overlap() - Check if an image overlaps the OS + * + * @name: Name of image to check (used to print error) + * @base: Base address of image + * @end: End address of image (+1) + * @os_start: Start of OS + * @os_size: Size of OS in bytes + * Return: 0 if OK, -EXDEV if the image overlaps the OS + */ +static int check_overlap(const char *name, ulong base, ulong end, + ulong os_start, ulong os_size) +{ + ulong os_end; + + if (!base) + return 0; + os_end = os_start + os_size; + + if ((base >= os_start && base < os_end) || + (end > os_start && end <= os_end) || + (base < os_start && end >= os_end)) { + printf("ERROR: %s image overlaps OS image (OS=%lx..%lx)\n", + name, os_start, os_end); + + return -EXDEV; + } + + return 0; +} + int bootm_find_images(ulong img_addr, const char *conf_ramdisk, const char *conf_fdt, ulong start, ulong size) { @@ -496,16 +527,8 @@ int bootm_find_images(ulong img_addr, const char *conf_ramdisk, }
/* check if ramdisk overlaps OS image */ - if (images.rd_start && (((ulong)images.rd_start >= start && - (ulong)images.rd_start < start + size) || - ((ulong)images.rd_end > start && - (ulong)images.rd_end <= start + size) || - ((ulong)images.rd_start < start && - (ulong)images.rd_end >= start + size))) { - printf("ERROR: RD image overlaps OS image (OS=0x%lx..0x%lx)\n", - start, start + size); + if (check_overlap("RD", images.rd_start, images.rd_end, start, size)) return 1; - }
if (CONFIG_IS_ENABLED(OF_LIBFDT)) { buf = map_sysmem(img_addr, 0); @@ -519,15 +542,9 @@ int bootm_find_images(ulong img_addr, const char *conf_ramdisk, }
/* check if FDT overlaps OS image */ - if (images.ft_addr && - (((ulong)images.ft_addr >= start && - (ulong)images.ft_addr < start + size) || - ((ulong)images.ft_addr + images.ft_len >= start && - (ulong)images.ft_addr + images.ft_len < start + size))) { - printf("ERROR: FDT image overlaps OS image (OS=0x%lx..0x%lx)\n", - start, start + size); + if (check_overlap("FDT", map_to_sysmem(images.ft_addr), + images.ft_len, start, size)) return 1; - }
if (IS_ENABLED(CONFIG_CMD_FDT)) set_working_fdt_addr(map_to_sysmem(images.ft_addr));