*
* Aneesh V <aneesh@ti.com>
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
+#include <dm.h>
#include <spl.h>
#include <asm/u-boot.h>
#include <nand.h>
#include <i2c.h>
#include <image.h>
#include <malloc.h>
+#include <dm/root.h>
#include <linux/compiler.h>
DECLARE_GLOBAL_DATA_PTR;
+#ifndef CONFIG_SYS_UBOOT_START
+#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE
+#endif
+#ifndef CONFIG_SYS_MONITOR_LEN
+/* Unknown U-Boot size, let's assume it will not be more than 200 KB */
+#define CONFIG_SYS_MONITOR_LEN (200 * 1024)
+#endif
+
u32 *boot_params_ptr = NULL;
struct spl_image_info spl_image;
-/* Define global data structure pointer to it*/
-static gd_t gdata __attribute__ ((section(".data")));
+/* Define board data structure */
static bd_t bdata __attribute__ ((section(".data")));
-inline void hang(void)
-{
- puts("### ERROR ### Please RESET the board ###\n");
- for (;;)
- ;
-}
-
-void board_init_f(ulong dummy)
-{
- /*
- * We call relocate_code() with relocation target same as the
- * CONFIG_SYS_SPL_TEXT_BASE. This will result in relocation getting
- * skipped. Instead, only .bss initialization will happen. That's
- * all we need
- */
- debug(">>board_init_f()\n");
- relocate_code(CONFIG_SPL_STACK, &gdata, CONFIG_SPL_TEXT_BASE);
-}
-
/*
* Default function to determine if u-boot or the OS should
* be started. This implementation always returns 1.
}
#endif
+/*
+ * Weak default function for board specific cleanup/preparation before
+ * Linux boot. Some boards/platforms might not need it, so just provide
+ * an empty stub here.
+ */
+__weak void spl_board_prepare_for_linux(void)
+{
+ /* Nothing to do! */
+}
+
+void spl_set_header_raw_uboot(void)
+{
+ spl_image.size = CONFIG_SYS_MONITOR_LEN;
+ spl_image.entry_point = CONFIG_SYS_UBOOT_START;
+ spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
+ spl_image.os = IH_OS_U_BOOT;
+ spl_image.name = "U-Boot";
+}
+
void spl_parse_image_header(const struct image_header *header)
{
u32 header_size = sizeof(struct image_header);
- if (__be32_to_cpu(header->ih_magic) == IH_MAGIC) {
- spl_image.size = __be32_to_cpu(header->ih_size) + header_size;
- spl_image.entry_point = __be32_to_cpu(header->ih_load);
- /* Load including the header */
- spl_image.load_addr = spl_image.entry_point - header_size;
- spl_image.os = header->ih_os;
- spl_image.name = (const char *)&header->ih_name;
- debug("spl: payload image: %s load addr: 0x%x size: %d\n",
- spl_image.name, spl_image.load_addr, spl_image.size);
+ if (image_get_magic(header) == IH_MAGIC) {
+ if (spl_image.flags & SPL_COPY_PAYLOAD_ONLY) {
+ /*
+ * On some system (e.g. powerpc), the load-address and
+ * entry-point is located at address 0. We can't load
+ * to 0-0x40. So skip header in this case.
+ */
+ spl_image.load_addr = image_get_load(header);
+ spl_image.entry_point = image_get_ep(header);
+ spl_image.size = image_get_data_size(header);
+ } else {
+ spl_image.entry_point = image_get_load(header);
+ /* Load including the header */
+ spl_image.load_addr = spl_image.entry_point -
+ header_size;
+ spl_image.size = image_get_data_size(header) +
+ header_size;
+ }
+ spl_image.os = image_get_os(header);
+ spl_image.name = image_get_name(header);
+ debug("spl: payload image: %.*s load addr: 0x%x size: %d\n",
+ (int)sizeof(spl_image.name), spl_image.name,
+ spl_image.load_addr, spl_image.size);
} else {
/* Signature not found - assume u-boot.bin */
- puts("mkimage signature not found, assuming u-boot.bin ..\n");
debug("mkimage signature not found - ih_magic = %x\n",
header->ih_magic);
- /* Let's assume U-Boot will not be more than 200 KB */
- spl_image.size = 200 * 1024;
- spl_image.entry_point = CONFIG_SYS_TEXT_BASE;
- spl_image.load_addr = CONFIG_SYS_TEXT_BASE;
- spl_image.os = IH_OS_U_BOOT;
- spl_image.name = "U-Boot";
+ spl_set_header_raw_uboot();
}
}
-/*
- * This function jumps to an image with argument. Normally an FDT or ATAGS
- * image.
- * arg: Pointer to paramter image in RAM
- */
-#ifdef CONFIG_SPL_OS_BOOT
-static void __noreturn jump_to_image_linux(void *arg)
+__weak void __noreturn jump_to_image_no_args(struct spl_image_info *spl_image)
{
- debug("Entering kernel arg pointer: 0x%p\n", arg);
- typedef void (*image_entry_arg_t)(int, int, void *)
- __attribute__ ((noreturn));
- image_entry_arg_t image_entry =
- (image_entry_arg_t) spl_image.entry_point;
- cleanup_before_linux();
- image_entry(0, CONFIG_MACH_TYPE, arg);
+ typedef void __noreturn (*image_entry_noargs_t)(void);
+
+ image_entry_noargs_t image_entry =
+ (image_entry_noargs_t) spl_image->entry_point;
+
+ debug("image entry point: 0x%X\n", spl_image->entry_point);
+ image_entry();
}
-#endif
-static void __noreturn jump_to_image_no_args(void)
+#ifdef CONFIG_SPL_RAM_DEVICE
+static void spl_ram_load_image(void)
{
- typedef void __noreturn (*image_entry_noargs_t)(u32 *);
- image_entry_noargs_t image_entry =
- (image_entry_noargs_t) spl_image.entry_point;
+ const struct image_header *header;
- debug("image entry point: 0x%X\n", spl_image.entry_point);
- /* Pass the saved boot_params from rom code */
-#if defined(CONFIG_VIRTIO) || defined(CONFIG_ZEBU)
- image_entry = (image_entry_noargs_t)0x80100000;
-#endif
- u32 boot_params_ptr_addr = (u32)&boot_params_ptr;
- image_entry((u32 *)boot_params_ptr_addr);
+ /*
+ * 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 *id, ulong dummy)
+void board_init_r(gd_t *dummy1, ulong dummy2)
{
u32 boot_device;
debug(">>spl:board_init_r()\n");
-#ifdef CONFIG_SYS_SPL_MALLOC_START
+#if defined(CONFIG_SYS_SPL_MALLOC_START)
mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
CONFIG_SYS_SPL_MALLOC_SIZE);
+ gd->flags |= GD_FLG_FULL_MALLOC_INIT;
+#elif defined(CONFIG_SYS_MALLOC_F_LEN)
+ gd->malloc_limit = gd->malloc_base + CONFIG_SYS_MALLOC_F_LEN;
+ gd->malloc_ptr = 0;
+#endif
+#ifdef CONFIG_SPL_DM
+ dm_init_and_scan(true);
+#endif
+
+#ifndef CONFIG_PPC
+ /*
+ * timer_init() does not exist on PPC systems. The timer is initialized
+ * and enabled (decrementer) in interrupt_init() here.
+ */
+ timer_init();
#endif
#ifdef CONFIG_SPL_BOARD_INIT
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:
spl_nand_load_image();
break;
#endif
+#ifdef CONFIG_SPL_ONENAND_SUPPORT
+ case BOOT_DEVICE_ONENAND:
+ spl_onenand_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_NOR_SUPPORT
+ case BOOT_DEVICE_NOR:
+ spl_nor_load_image();
+ break;
+#endif
#ifdef CONFIG_SPL_YMODEM_SUPPORT
case BOOT_DEVICE_UART:
spl_ymodem_load_image();
#endif
#ifdef CONFIG_SPL_SPI_SUPPORT
case BOOT_DEVICE_SPI:
- spi_boot();
- break;
+ spl_spi_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_ETH_SUPPORT
+ case BOOT_DEVICE_CPGMAC:
+#ifdef CONFIG_SPL_ETH_DEVICE
+ spl_net_load_image(CONFIG_SPL_ETH_DEVICE);
+#else
+ spl_net_load_image(NULL);
+#endif
+ break;
+#endif
+#ifdef CONFIG_SPL_USBETH_SUPPORT
+ case BOOT_DEVICE_USBETH:
+ spl_net_load_image("usb_ether");
+ break;
+#endif
+#ifdef CONFIG_SPL_USB_SUPPORT
+ case BOOT_DEVICE_USB:
+ spl_usb_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_SATA_SUPPORT
+ case BOOT_DEVICE_SATA:
+ spl_sata_load_image();
+ break;
#endif
default:
- puts("SPL: Un-supported Boot Device\n");
- debug("Found: %d\n", boot_device);
+#if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
+ printf("SPL: Unsupported Boot Device %d\n", boot_device);
+#endif
hang();
- break;
}
switch (spl_image.os) {
case IH_OS_U_BOOT:
debug("Jumping to U-Boot\n");
- jump_to_image_no_args();
break;
#ifdef CONFIG_SPL_OS_BOOT
case IH_OS_LINUX:
debug("Jumping to Linux\n");
spl_board_prepare_for_linux();
jump_to_image_linux((void *)CONFIG_SYS_SPL_ARGS_ADDR);
- break;
#endif
default:
- puts("Unsupported OS image.. Jumping nevertheless..\n");
- jump_to_image_no_args();
+ debug("Unsupported OS image.. Jumping nevertheless..\n");
}
+#if defined(CONFIG_SYS_MALLOC_F_LEN) && !defined(CONFIG_SYS_SPL_MALLOC_SIZE)
+ debug("SPL malloc() used %#lx bytes (%ld KB)\n", gd->malloc_ptr,
+ gd->malloc_ptr / 1024);
+#endif
+
+ jump_to_image_no_args(&spl_image);
}
-/* This requires UART clocks to be enabled */
+/*
+ * This requires UART clocks to be enabled. In order for this to work the
+ * caller must ensure that the gd pointer is valid.
+ */
void preloader_console_init(void)
{
- gd = &gdata;
gd->bd = &bdata;
- gd->flags |= GD_FLG_RELOC;
gd->baudrate = CONFIG_BAUDRATE;
serial_init(); /* serial communications setup */
projects / karo-tx-uboot.git / blobdiff