From: Pavel Machek pavel@denx.de
Signed-off-by: Pavel Machek pavel@denx.de Signed-off-by: Tom Rini trini@ti.com --- Changes in v6: - Add Pavel's spl_ram_load_image for when we've already got next image residing in DDR. - Fix multiline comment in spl_ram_load_image.
README | 3 +++ common/spl/spl.c | 22 ++++++++++++++++++++++ doc/README.SPL | 1 + 3 files changed, 26 insertions(+)
diff --git a/README b/README index 9bcfe7a..9ca3c85 100644 --- a/README +++ b/README @@ -2644,6 +2644,9 @@ FIT uImage format: CONFIG_SPL_SPI_SUPPORT Support for drivers/spi/libspi.o in SPL binary
+ CONFIG_SPL_RAM_DEVICE + Support for running image already present in ram, in SPL binary + CONFIG_SPL_LIBGENERIC_SUPPORT Support for lib/libgeneric.o in SPL binary
diff --git a/common/spl/spl.c b/common/spl/spl.c index f2f6de7..c640f87 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -128,6 +128,23 @@ static void __noreturn jump_to_image_no_args(void) image_entry((u32 *)boot_params_ptr_addr); }
+#ifdef CONFIG_SPL_RAM_DEVICE +static void spl_ram_load_image(void) +{ + const struct image_header *header; + + /* + * Get the header. It will point to an address defined by handoff + * which will tell where the image located inside the flash. For + * now, it will temporary fixed to address pointed by U-Boot. + */ + header = (struct image_header *) + (CONFIG_SYS_TEXT_BASE - sizeof(struct image_header)); + + spl_parse_image_header(header); +} +#endif + void board_init_r(gd_t *dummy1, ulong dummy2) { u32 boot_device; @@ -145,6 +162,11 @@ void board_init_r(gd_t *dummy1, ulong dummy2) boot_device = spl_boot_device(); debug("boot device - %d\n", boot_device); switch (boot_device) { +#ifdef CONFIG_SPL_RAM_DEVICE + case BOOT_DEVICE_RAM: + spl_ram_load_image(); + break; +#endif #ifdef CONFIG_SPL_MMC_SUPPORT case BOOT_DEVICE_MMC1: case BOOT_DEVICE_MMC2: diff --git a/doc/README.SPL b/doc/README.SPL index 5368586..4e1cb28 100644 --- a/doc/README.SPL +++ b/doc/README.SPL @@ -66,6 +66,7 @@ CONFIG_SPL_DMA_SUPPORT (drivers/dma/libdma.o) CONFIG_SPL_POST_MEM_SUPPORT (post/drivers/memory.o) CONFIG_SPL_NAND_LOAD (drivers/mtd/nand/nand_spl_load.o) CONFIG_SPL_SPI_LOAD (drivers/mtd/spi/spi_spl_load.o) +CONFIG_SPL_RAM_DEVICE (common/spl/spl.c)
Normally CPU is assumed to be the same between the SPL and normal