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-rw-r--r--common/spl/Makefile37
-rw-r--r--common/spl/spl.c224
-rw-r--r--common/spl/spl_ymodem.c75
3 files changed, 336 insertions, 0 deletions
diff --git a/common/spl/Makefile b/common/spl/Makefile
new file mode 100644
index 000000000..b61b43828
--- /dev/null
+++ b/common/spl/Makefile
@@ -0,0 +1,37 @@
+#
+# (C) Copyright 2012
+# Texas Instruments Incorporated - http://www.ti.com/
+# Aneesh V <aneesh@ti.com>
+#
+# This file is released under the terms of GPL v2 and any later version.
+# See the file COPYING in the root directory of the source tree for details.
+#
+# Based on common/Makefile.
+#
+
+include $(TOPDIR)/config.mk
+
+LIB = $(obj)libspl.o
+
+ifdef CONFIG_SPL_BUILD
+COBJS-$(CONFIG_SPL_FRAMEWORK) += spl.o
+COBJS-$(CONFIG_SPL_YMODEM_SUPPORT) += spl_ymodem.o
+endif
+
+COBJS := $(sort $(COBJS-y))
+SRCS := $(COBJS:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+
+all: $(obj).depend $(LIB)
+
+$(LIB): $(OBJS)
+ $(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/common/spl/spl.c b/common/spl/spl.c
new file mode 100644
index 000000000..1562f2a16
--- /dev/null
+++ b/common/spl/spl.c
@@ -0,0 +1,224 @@
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * 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
+ */
+#include <common.h>
+#include <spl.h>
+#include <asm/u-boot.h>
+#include <nand.h>
+#include <fat.h>
+#include <version.h>
+#include <i2c.h>
+#include <image.h>
+#include <malloc.h>
+#include <linux/compiler.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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")));
+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.
+ *
+ * Please implement your own board specific funcion to do this.
+ *
+ * RETURN
+ * 0 to not start u-boot
+ * positive if u-boot should start
+ */
+#ifdef CONFIG_SPL_OS_BOOT
+__weak int spl_start_uboot(void)
+{
+ puts("SPL: Please implement spl_start_uboot() for your board\n");
+ puts("SPL: Direct Linux boot not active!\n");
+ return 1;
+}
+#endif
+
+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);
+ } 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";
+ }
+}
+
+/*
+ * 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)
+{
+ 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);
+}
+#endif
+
+static void __noreturn jump_to_image_no_args(void)
+{
+ typedef void __noreturn (*image_entry_noargs_t)(u32 *);
+ 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);
+ /* 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);
+}
+
+void board_init_r(gd_t *id, ulong dummy)
+{
+ u32 boot_device;
+ debug(">>spl:board_init_r()\n");
+
+#ifdef CONFIG_SYS_SPL_MALLOC_START
+ mem_malloc_init(CONFIG_SYS_SPL_MALLOC_START,
+ CONFIG_SYS_SPL_MALLOC_SIZE);
+#endif
+
+#ifdef CONFIG_SPL_BOARD_INIT
+ spl_board_init();
+#endif
+
+ boot_device = spl_boot_device();
+ debug("boot device - %d\n", boot_device);
+ switch (boot_device) {
+#ifdef CONFIG_SPL_MMC_SUPPORT
+ case BOOT_DEVICE_MMC1:
+ case BOOT_DEVICE_MMC2:
+ case BOOT_DEVICE_MMC2_2:
+ spl_mmc_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_NAND_SUPPORT
+ case BOOT_DEVICE_NAND:
+ spl_nand_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_YMODEM_SUPPORT
+ case BOOT_DEVICE_UART:
+ spl_ymodem_load_image();
+ break;
+#endif
+#ifdef CONFIG_SPL_SPI_SUPPORT
+ case BOOT_DEVICE_SPI:
+ spi_boot();
+ break;
+#endif
+ default:
+ puts("SPL: Un-supported Boot Device\n");
+ debug("Found: %d\n", boot_device);
+ 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();
+ }
+}
+
+/* This requires UART clocks to be enabled */
+void preloader_console_init(void)
+{
+ gd = &gdata;
+ gd->bd = &bdata;
+ gd->flags |= GD_FLG_RELOC;
+ gd->baudrate = CONFIG_BAUDRATE;
+
+ serial_init(); /* serial communications setup */
+
+ gd->have_console = 1;
+
+ puts("\nU-Boot SPL " PLAIN_VERSION " (" U_BOOT_DATE " - " \
+ U_BOOT_TIME ")\n");
+#ifdef CONFIG_SPL_DISPLAY_PRINT
+ spl_display_print();
+#endif
+}
diff --git a/common/spl/spl_ymodem.c b/common/spl/spl_ymodem.c
new file mode 100644
index 000000000..40e50356f
--- /dev/null
+++ b/common/spl/spl_ymodem.c
@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2011
+ * Texas Instruments, <www.ti.com>
+ *
+ * Matt Porter <mporter@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
+ */
+#include <common.h>
+#include <spl.h>
+#include <xyzModem.h>
+#include <asm/u-boot.h>
+#include <asm/utils.h>
+
+#define BUF_SIZE 1024
+
+static int getcymodem(void) {
+ if (tstc())
+ return (getc());
+ return -1;
+}
+
+void spl_ymodem_load_image(void)
+{
+ int size = 0;
+ int err;
+ int res;
+ int ret;
+ connection_info_t info;
+ char buf[BUF_SIZE];
+ ulong store_addr = ~0;
+ ulong addr = 0;
+
+ info.mode = xyzModem_ymodem;
+ ret = xyzModem_stream_open(&info, &err);
+
+ if (!ret) {
+ while ((res =
+ xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
+ if (addr == 0)
+ spl_parse_image_header((struct image_header *)buf);
+ store_addr = addr + spl_image.load_addr;
+ size += res;
+ addr += res;
+ memcpy((char *)(store_addr), buf, res);
+ }
+ } else {
+ printf("spl: ymodem err - %s\n", xyzModem_error(err));
+ hang();
+ }
+
+ xyzModem_stream_close(&err);
+ xyzModem_stream_terminate(false, &getcymodem);
+
+ printf("Loaded %d bytes\n", size);
+}
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