[U-Boot] [RFC] [U-Boot 1/2] common: spl: add USB mass storage as a boot device
Dan Murphy
dmurphy at ti.com
Thu Dec 5 15:39:46 CET 2013
Add the ability to load a u-boot off a USB mass storage device
from the SPL
Signed-off-by: Dan Murphy <dmurphy at ti.com>
---
common/Makefile | 2 +
common/spl/Makefile | 2 +
common/spl/spl.c | 5 ++
common/spl/spl_usb.c | 179 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/spl.h | 7 ++
spl/Makefile | 2 +
6 files changed, 197 insertions(+)
create mode 100644 common/spl/spl_usb.c
diff --git a/common/Makefile b/common/Makefile
index 74404be..5b062c0 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -203,6 +203,8 @@ obj-$(CONFIG_ENV_IS_IN_MMC) += env_mmc.o
obj-$(CONFIG_ENV_IS_IN_NAND) += env_nand.o
obj-$(CONFIG_ENV_IS_IN_SPI_FLASH) += env_sf.o
obj-$(CONFIG_ENV_IS_IN_FLASH) += env_flash.o
+obj-$(CONFIG_SPL_USB_SUPPORT) += usb.o usb_hub.o
+obj-$(CONFIG_USB_STORAGE) += usb_storage.o
else
obj-y += env_nowhere.o
endif
diff --git a/common/spl/Makefile b/common/spl/Makefile
index 5c0637b..9261ea9 100644
--- a/common/spl/Makefile
+++ b/common/spl/Makefile
@@ -16,4 +16,6 @@ obj-$(CONFIG_SPL_NAND_SUPPORT) += spl_nand.o
obj-$(CONFIG_SPL_ONENAND_SUPPORT) += spl_onenand.o
obj-$(CONFIG_SPL_NET_SUPPORT) += spl_net.o
obj-$(CONFIG_SPL_MMC_SUPPORT) += spl_mmc.o
+obj-$(CONFIG_SPL_USB_SUPPORT) += spl_usb.o
+
endif
diff --git a/common/spl/spl.c b/common/spl/spl.c
index da31457..0645cee 100644
--- a/common/spl/spl.c
+++ b/common/spl/spl.c
@@ -205,6 +205,11 @@ void board_init_r(gd_t *dummy1, ulong dummy2)
spl_net_load_image("usb_ether");
break;
#endif
+#ifdef CONFIG_SPL_USB_SUPPORT
+ case BOOT_DEVICE_USB:
+ spl_usb_load_image();
+ break;
+#endif
default:
debug("SPL: Un-supported Boot Device\n");
hang();
diff --git a/common/spl/spl_usb.c b/common/spl/spl_usb.c
new file mode 100644
index 0000000..94c442e
--- /dev/null
+++ b/common/spl/spl_usb.c
@@ -0,0 +1,179 @@
+/*
+ * (C) Copyright 2013
+ * Texas Instruments, <www.ti.com>
+ *
+ * Dan Murphy <dmurphy at ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ *
+ * Derived work from spl_mmc.c
+ */
+
+#include <common.h>
+#include <spl.h>
+#include <asm/u-boot.h>
+#include <usb.h>
+#include <fat.h>
+#include <version.h>
+#include <image.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#ifdef CONFIG_USB_STORAGE
+static int usb_stor_curr_dev = -1; /* current device */
+#endif
+
+static int usb_load_image_raw(block_dev_desc_t *stor_dev, unsigned long sector)
+{
+ unsigned long err;
+ u32 image_size_sectors;
+ struct image_header *header;
+
+ header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
+ sizeof(struct image_header));
+
+ /* read image header to find the image size & load address */
+ err = stor_dev->block_read(usb_stor_curr_dev, sector, 1, (ulong *)header);
+ if (err == 0)
+ goto end;
+
+ if (image_get_magic(header) != IH_MAGIC)
+ return -1;
+
+ spl_parse_image_header(header);
+
+ /* convert size to sectors - round up
+ image_size_sectors = (spl_image.size + mmc->read_bl_len - 1) /
+ mmc->read_bl_len;*/
+ image_size_sectors = 0;
+
+ /* Read the header too to avoid extra memcpy */
+ err = stor_dev->block_read(usb_stor_curr_dev, sector,
+ image_size_sectors, (void *)spl_image.load_addr);
+
+end:
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ if (err == 0)
+ printf("spl: USB blk read err - %lu\n", err);
+#endif
+ return (err == 0);
+
+}
+
+#ifdef CONFIG_SPL_OS_BOOT
+static int usb_load_image_raw_os(struct usb_device *usb_dev)
+{
+ return -1;
+}
+#endif
+
+#ifdef CONFIG_SPL_FAT_SUPPORT
+static int usb_load_image_fat(const char *filename)
+{
+ int err;
+ struct image_header *header;
+
+ header = (struct image_header *)(CONFIG_SYS_TEXT_BASE -
+ sizeof(struct image_header));
+
+ err = file_fat_read(filename, header, sizeof(struct image_header));
+ if (err <= 0)
+ goto end;
+
+ spl_parse_image_header(header);
+
+ err = file_fat_read(filename, (u8 *)spl_image.load_addr, 0);
+
+end:
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ if (err <= 0)
+ printf("spl: error reading image %s, err - %d\n",
+ filename, err);
+#endif
+
+ return (err <= 0);
+}
+
+#ifdef CONFIG_SPL_OS_BOOT
+static int usb_load_image_fat_os(struct usb_device *usb_dev)
+{
+ int err;
+
+ err = file_fat_read(CONFIG_SPL_FAT_LOAD_ARGS_NAME,
+ (void *)CONFIG_SYS_SPL_ARGS_ADDR, 0);
+ if (err <= 0) {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ printf("spl: error reading image %s, err - %d\n",
+ CONFIG_SPL_FAT_LOAD_ARGS_NAME, err);
+#endif
+ return -1;
+ }
+
+ return usb_load_image_fat(CONFIG_SPL_FAT_LOAD_KERNEL_NAME);
+}
+#endif
+
+#endif
+
+void spl_usb_load_image(void)
+{
+ struct usb_device *usb_dev;
+ int err;
+ u32 boot_mode;
+ block_dev_desc_t *stor_dev;
+
+ usb_stop();
+ err = usb_init();
+ if (err) {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ printf("spl: usb init failed: err - %d\n", err);
+#endif
+ hang();
+ } else {
+#ifdef CONFIG_USB_STORAGE
+ /* try to recognize storage devices immediately */
+ usb_stor_curr_dev = usb_stor_scan(1);
+ stor_dev = usb_stor_get_dev(usb_stor_curr_dev);
+#endif
+ }
+
+ boot_mode = spl_boot_mode();
+ if (boot_mode == USB_MODE_RAW) {
+ debug("boot mode - RAW\n");
+#ifdef CONFIG_SPL_OS_BOOT
+ if (spl_start_uboot() || usb_load_image_raw_os(usb_dev))
+#endif
+ err = usb_load_image_raw(stor_dev,
+ CONFIG_SYS_USB_MODE_U_BOOT_SECTOR);
+#ifdef CONFIG_SPL_FAT_SUPPORT
+ } else if (boot_mode == USB_MODE_FAT) {
+ debug("boot mode - FAT\n");
+
+ err = fat_register_device(stor_dev,
+ CONFIG_SYS_USB_FAT_BOOT_PARTITION);
+ if (err) {
+ #ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ printf("spl: fat register err - %d\n", err);
+ #endif
+ hang();
+ }
+
+#ifdef CONFIG_SPL_OS_BOOT
+ if (spl_start_uboot() || usb_load_image_fat_os(usb_dev))
+#endif
+ err = usb_load_image_fat(CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME);
+ if (err) {
+ puts("Error loading USB device\n");
+ hang();
+ }
+#endif
+ } else {
+#ifdef CONFIG_SPL_LIBCOMMON_SUPPORT
+ puts("spl: wrong USB boot mode\n");
+#endif
+ hang();
+ }
+
+ if (err)
+ hang();
+}
diff --git a/include/spl.h b/include/spl.h
index 2bd6e16..5730ec7 100644
--- a/include/spl.h
+++ b/include/spl.h
@@ -16,6 +16,10 @@
#define MMCSD_MODE_RAW 1
#define MMCSD_MODE_FAT 2
+#define USB_MODE_UNDEFINED 0
+#define USB_MODE_RAW 1
+#define USB_MODE_FAT 2
+
struct spl_image_info {
const char *name;
u8 os;
@@ -60,6 +64,9 @@ void spl_spi_load_image(void);
/* Ethernet SPL functions */
void spl_net_load_image(const char *device);
+/* USB SPL functions */
+void spl_usb_load_image(void);
+
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void);
#endif
diff --git a/spl/Makefile b/spl/Makefile
index 29d7818..26de0d3 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -86,6 +86,8 @@ LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/
LIBS-$(CONFIG_SPL_ETH_SUPPORT) += drivers/net/phy/
LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/net/phy/
LIBS-$(CONFIG_SPL_MUSB_NEW_SUPPORT) += drivers/usb/musb-new/
+LIBS-$(CONFIG_SPL_USB_HOST_SUPPORT) += drivers/usb/host/
+LIBS-$(CONFIG_OMAP_USB_PHY) += drivers/usb/phy/
LIBS-$(CONFIG_SPL_USBETH_SUPPORT) += drivers/usb/gadget/
LIBS-$(CONFIG_SPL_WATCHDOG_SUPPORT) += drivers/watchdog/
--
1.7.9.5
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