[U-Boot] [PATCH 3/8] spl: Move the loading code into its own function

[Simon Glass]

Create a boot_from_devices() function to handle trying each device. This
helps to reduce the size of the already-large board_init_r() function.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 common/spl/spl.c | 33 +++++++++++++++++++++------------
 1 file changed, 21 insertions(+), 12 deletions(-)

diff --git a/common/spl/spl.c b/common/spl/spl.c
index 4f23c0e..8c3a47d 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -372,12 +372,29 @@ static int spl_load_image(struct spl_image_info 
*spl_image, u32 boot_device)
 
        bootdev.boot_device = boot_device;
        bootdev.boot_device_name = NULL;
-       if (loader)
-               return loader->load_image(spl_image, &bootdev);
 
+       return loader->load_image(spl_image, &bootdev);
+}
+
+static int boot_from_devices(struct spl_image_info *spl_image,
+                            u32 spl_boot_list[])
+{
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(spl_boot_list) &&
+            spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
+               struct spl_image_loader *loader;
+
+               announce_boot_device(spl_boot_list[i]);
+               loader = spl_ll_find_loader(spl_boot_list[i]);
 #if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
-       puts("SPL: Unsupported Boot Device!\n");
+               if (!loader)
+                       puts("SPL: Unsupported Boot Device!\n");
 #endif
+               if (loader && !spl_load_image(spl_image, spl_boot_list[i]))
+                       return 0;
+       }
+
        return -ENODEV;
 }
 
@@ -391,7 +408,6 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
                BOOT_DEVICE_NONE,
        };
        struct spl_image_info spl_image;
-       int i;
 
        debug(">>spl:board_init_r()\n");
 
@@ -418,15 +434,8 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
 
        memset(&spl_image, '\0', sizeof(spl_image));
        board_boot_order(spl_boot_list);
-       for (i = 0; i < ARRAY_SIZE(spl_boot_list) &&
-                       spl_boot_list[i] != BOOT_DEVICE_NONE; i++) {
-               announce_boot_device(spl_boot_list[i]);
-               if (!spl_load_image(&spl_image, spl_boot_list[i]))
-                       break;
-       }
 
-       if (i == ARRAY_SIZE(spl_boot_list) ||
-           spl_boot_list[i] == BOOT_DEVICE_NONE) {
+       if (boot_from_devices(&spl_image, spl_boot_list)) {
                puts("SPL: failed to boot from all boot devices\n");
                hang();
        }
-- 
2.8.0.rc3.226.g39d4020

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