spl: Add a parameter to spl_parse_image_header()

[oweals/u-boot.git] / drivers / mtd / spi / spi_spl_load.c

diff --git a/drivers/mtd/spi/spi_spl_load.c b/drivers/mtd/spi/spi_spl_load.c
index 29355307f3689c0b61f2c6432a0033c4504a8c0f..ac5eae33236946e57b0aedefb0dfe896d5a47678 100644 (file)
--- a/drivers/mtd/spi/spi_spl_load.c
+++ b/drivers/mtd/spi/spi_spl_load.c
@@ -10,16 +10,64 @@
  */
 
 #include <common.h>
+#include <spi.h>
 #include <spi_flash.h>
+#include <errno.h>
 #include <spl.h>
 
+#ifdef CONFIG_SPL_OS_BOOT
+/*
+ * Load the kernel, check for a valid header we can parse, and if found load
+ * the kernel and then device tree.
+ */
+static int spi_load_image_os(struct spi_flash *flash,
+                            struct image_header *header)
+{
+       int err;
+
+       /* Read for a header, parse or error out. */
+       spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS, 0x40,
+                      (void *)header);
+
+       if (image_get_magic(header) != IH_MAGIC)
+               return -1;
+
+       err = spl_parse_image_header(&spl_image, header);
+       if (err)
+               return err;
+
+       spi_flash_read(flash, CONFIG_SYS_SPI_KERNEL_OFFS,
+                      spl_image.size, (void *)spl_image.load_addr);
+
+       /* Read device tree. */
+       spi_flash_read(flash, CONFIG_SYS_SPI_ARGS_OFFS,
+                      CONFIG_SYS_SPI_ARGS_SIZE,
+                      (void *)CONFIG_SYS_SPL_ARGS_ADDR);
+
+       return 0;
+}
+#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
  * from SPI into SDRAM and starts it from there.
  */
-void spl_spi_load_image(void)
+int spl_spi_load_image(void)
 {
+       int err = 0;
        struct spi_flash *flash;
        struct image_header *header;
 
@@ -27,20 +75,49 @@ void spl_spi_load_image(void)
         * Load U-Boot image from SPI flash into RAM
         */
 
-       flash = spi_flash_probe(CONFIG_SPL_SPI_BUS, CONFIG_SPL_SPI_CS,
-                               CONFIG_SF_DEFAULT_SPEED, SPI_MODE_3);
+       flash = spi_flash_probe(CONFIG_SF_DEFAULT_BUS,
+                               CONFIG_SF_DEFAULT_CS,
+                               CONFIG_SF_DEFAULT_SPEED,
+                               CONFIG_SF_DEFAULT_MODE);
        if (!flash) {
                puts("SPI probe failed.\n");
-               hang();
+               return -ENODEV;
        }
 
        /* use CONFIG_SYS_TEXT_BASE as temporary storage area */
        header = (struct image_header *)(CONFIG_SYS_TEXT_BASE);
 
-       /* Load u-boot, mkimage header is 64 bytes. */
-       spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, 0x40,
-                      (void *)header);
-       spl_parse_image_header(header);
-       spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS,
-                      spl_image.size, (void *)spl_image.load_addr);
+#ifdef CONFIG_SPL_OS_BOOT
+       if (spl_start_uboot() || spi_load_image_os(flash, header))
+#endif
+       {
+               /* Load u-boot, mkimage header is 64 bytes. */
+               err = spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS, 0x40,
+                                    (void *)header);
+               if (err)
+                       return err;
+
+               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(&spl_image, 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;
 }