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spl: move RAM boot support in separate file 

Add a new top-level config option so support booting an image stored
in RAM. This allows to move the RAM boot support into a sparate file
and having a single condition to compile that file.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2016-12-23 07:51:53 +01:00 committed by Tom Rini
parent f417d40fe2
commit 22802f4e3a
4 changed files with 84 additions and 60 deletions
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12
common/spl/Kconfig
View File

@ -449,9 +449,17 @@ config SPL_POWER_SUPPORT
in drivers/power, drivers/power/pmic and drivers/power/regulator
as part of an SPL build.
config SPL_RAM_SUPPORT
bool "Support booting from RAM"
depends on SPL
default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
help
Enable booting of an image in RAM. The image can be preloaded or
it can be loaded by SPL directly into RAM (e.g. using USB).
config SPL_RAM_DEVICE
bool "Support booting from preloaded image in RAM"
depends on SPL
depends on SPL_RAM_SUPPORT
default y if MICROBLAZE || ARCH_SOCFPGA || TEGRA || ARCH_ZYNQ
help
Enable booting of an image already loaded in RAM. The image has to
@ -558,7 +566,7 @@ choice
config SPL_DFU_RAM
bool "RAM device"
depends on SPL_DFU_SUPPORT
depends on SPL_DFU_SUPPORT && SPL_RAM_SUPPORT
help
select RAM/DDR memory device for loading binary images
(u-boot/kernel) to the selected device partition using

1
common/spl/Makefile
View File

@ -26,4 +26,5 @@ obj-$(CONFIG_SPL_EXT_SUPPORT) += spl_ext.o
obj-$(CONFIG_SPL_SATA_SUPPORT) += spl_sata.o
obj-$(CONFIG_SPL_DFU_SUPPORT) += spl_dfu.o
obj-$(CONFIG_SPL_SPI_LOAD) += spl_spi.o
obj-$(CONFIG_SPL_RAM_SUPPORT) += spl_ram.o
endif

58
common/spl/spl.c
View File

@ -170,64 +170,6 @@ __weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
image_entry();
}
#ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
# define CONFIG_SPL_LOAD_FIT_ADDRESS 0
#endif
#if defined(CONFIG_SPL_RAM_DEVICE) || defined(CONFIG_SPL_DFU_SUPPORT)
static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
debug("%s: sector %lx, count %lx, buf %lx\n",
__func__, sector, count, (ulong)buf);
memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
return count;
}
static int spl_ram_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
struct image_header *header;
header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
#if defined(CONFIG_SPL_DFU_SUPPORT)
if (bootdev->boot_device == BOOT_DEVICE_DFU)
spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
#endif
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
debug("Found FIT\n");
load.bl_len = 1;
load.read = spl_ram_load_read;
spl_load_simple_fit(spl_image, &load, 0, header);
} else {
debug("Legacy image\n");
/*
* 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(spl_image, header);
}
return 0;
}
#if defined(CONFIG_SPL_RAM_DEVICE)
SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
#endif
#if defined(CONFIG_SPL_DFU_SUPPORT)
SPL_LOAD_IMAGE_METHOD("USB DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
#endif
#endif
int spl_init(void)
{
int ret;

73
common/spl/spl_ram.c Normal file
View File

@ -0,0 +1,73 @@
/*
* (C) Copyright 2016
* Xilinx, Inc.
*
* (C) Copyright 2016
* Toradex AG
*
* Michal Simek <michal.simek@xilinx.com>
* Stefan Agner <stefan.agner@toradex.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <spl.h>
#include <libfdt.h>
#ifndef CONFIG_SPL_LOAD_FIT_ADDRESS
# define CONFIG_SPL_LOAD_FIT_ADDRESS 0
#endif
static ulong spl_ram_load_read(struct spl_load_info *load, ulong sector,
ulong count, void *buf)
{
debug("%s: sector %lx, count %lx, buf %lx\n",
__func__, sector, count, (ulong)buf);
memcpy(buf, (void *)(CONFIG_SPL_LOAD_FIT_ADDRESS + sector), count);
return count;
}
static int spl_ram_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
struct image_header *header;
header = (struct image_header *)CONFIG_SPL_LOAD_FIT_ADDRESS;
#if defined(CONFIG_SPL_DFU_SUPPORT)
if (bootdev->boot_device == BOOT_DEVICE_DFU)
spl_dfu_cmd(0, "dfu_alt_info_ram", "ram", "0");
#endif
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
debug("Found FIT\n");
load.bl_len = 1;
load.read = spl_ram_load_read;
spl_load_simple_fit(spl_image, &load, 0, header);
} else {
debug("Legacy image\n");
/*
* 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(spl_image, header);
}
return 0;
}
#if defined(CONFIG_SPL_RAM_DEVICE)
SPL_LOAD_IMAGE_METHOD("RAM", 0, BOOT_DEVICE_RAM, spl_ram_load_image);
#endif
#if defined(CONFIG_SPL_DFU_SUPPORT)
SPL_LOAD_IMAGE_METHOD("DFU", 0, BOOT_DEVICE_DFU, spl_ram_load_image);
#endif