spl: Support loading a FIT from SPI

Detect a FIT when loading from SPI and handle it using the
new FIT SPL support.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

diff --git a/drivers/mtd/spi/spi_spl_load.c b/drivers/mtd/spi/spi_spl_load.c
index 46c98a9..bac1e85 100644 (file)
--- a/drivers/mtd/spi/spi_spl_load.c
+++ b/drivers/mtd/spi/spi_spl_load.c
@@ -48,6 +48,18 @@ static int spi_load_image_os(struct spi_flash *flash,
 }
 #endif
 
+static ulong spl_spi_fit_read(struct spl_load_info *load, ulong sector,
+                             ulong count, void *buf)
+{
+       struct spi_flash *flash = load->dev;
+       ulong ret;
+
+       ret = spi_flash_read(flash, sector, count, buf);
+       if (!ret)
+               return count;
+       else
+               return 0;
+}
 /*
  * The main entry for SPI booting. It's necessary that SDRAM is already
  * configured and available since this code loads the main U-Boot image
@@ -85,11 +97,26 @@ int spl_spi_load_image(void)
                if (err)
                        return err;
 
-               err = spl_parse_image_header(header);
-               if (err)
-                       return err;
-               err = spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS,
-                              spl_image.size, (void *)spl_image.load_addr);
+               if (IS_ENABLED(CONFIG_SPL_LOAD_FIT)) {
+                       struct spl_load_info load;
+
+                       debug("Found FIT\n");
+                       load.dev = flash;
+                       load.priv = NULL;
+                       load.filename = NULL;
+                       load.bl_len = 1;
+                       load.read = spl_spi_fit_read;
+                       err = spl_load_simple_fit(&load,
+                                                 CONFIG_SYS_SPI_U_BOOT_OFFS,
+                                                 header);
+               } else {
+                       err = spl_parse_image_header(header);
+                       if (err)
+                               return err;
+                       err = spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS,
+                                            spl_image.size,
+                                            (void *)spl_image.load_addr);
+               }
        }
 
        return err;