COBJS += uic.o
endif
+ifdef CONFIG_SPL_BUILD
+COBJS-y += spl_boot.o
+endif
+
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS) $(COBJS-y))
START := $(addprefix $(obj),$(START))
--- /dev/null
+/*
+ * Copyright (C) 2013 Stefan Roese <sr@denx.de>
+ *
+ * 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.
+ */
+
+#include <common.h>
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Return selected boot device. On PPC4xx its only NOR flash right now.
+ */
+u32 spl_boot_device(void)
+{
+ return BOOT_DEVICE_NOR;
+}
+
+/*
+ * SPL version of board_init_f()
+ */
+void board_init_f(ulong bootflag)
+{
+ /*
+ * First we need to initialize the SDRAM, so that the real
+ * U-Boot or the OS (Linux) can be loaded
+ */
+ initdram(0);
+
+ /* Clear bss */
+ memset(__bss_start, '\0', __bss_end - __bss_start);
+
+ /*
+ * Init global_data pointer. Has to be done before calling
+ * get_clocks(), as it stores some clock values into gd needed
+ * later on in the serial driver.
+ */
+ /* Pointer is writable since we allocated a register for it */
+ gd = (gd_t *)(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
+ /* Clear initial global data */
+ memset((void *)gd, 0, sizeof(gd_t));
+
+ /*
+ * get_clocks() needs to be called so that the serial driver
+ * works correctly
+ */
+ get_clocks();
+
+ /*
+ * Do rudimental console / serial setup
+ */
+ preloader_console_init();
+
+ /*
+ * Call board_init_r() (SPL framework version) to load and boot
+ * real U-Boot or OS
+ */
+ board_init_r(NULL, 0);
+ /* Does not return!!! */
+}
*
* Use r12 to access the GOT
*/
-#if !defined(CONFIG_NAND_SPL)
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
START_GOT
GOT_ENTRY(_GOT2_TABLE_)
GOT_ENTRY(_FIXUP_TABLE_)
END_GOT
#endif /* CONFIG_NAND_SPL */
-#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL)
+#if defined(CONFIG_NAND_U_BOOT) && !defined(CONFIG_NAND_SPL) && \
+ !defined(CONFIG_SPL_BUILD)
/*
* NAND U-Boot image is started from offset 0
*/
bl _start_440
#endif
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+ /*
+ * This is the entry of the real U-Boot from a board port
+ * that supports SPL booting on the PPC4xx. We only need
+ * to call board_init_f() here. Everything else has already
+ * been done in the SPL u-boot version.
+ */
+ GET_GOT /* initialize GOT access */
+ bl board_init_f /* run 1st part of board init code (in Flash)*/
+ /* NOTREACHED - board_init_f() does not return */
+#endif
+
/*
* 440 Startup -- on reset only the top 4k of the effective
* address space is mapped in by an entry in the instruction
* r3 - 1st arg to board_init(): IMMP pointer
* r4 - 2nd arg to board_init(): boot flag
*/
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
.text
.long 0x27051956 /* U-Boot Magic Number */
.globl version_string
.globl _start
_start:
+#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD)
+ /*
+ * This is the entry of the real U-Boot from a board port
+ * that supports SPL booting on the PPC4xx. We only need
+ * to call board_init_f() here. Everything else has already
+ * been done in the SPL u-boot version.
+ */
+ GET_GOT /* initialize GOT access */
+ bl board_init_f /* run 1st part of board init code (in Flash)*/
+ /* NOTREACHED - board_init_f() does not return */
+#endif
+
/*****************************************************************************/
#if defined(CONFIG_440)
#ifdef CONFIG_NAND_SPL
bl nand_boot_common /* will not return */
#else
+#ifndef CONFIG_SPL_BUILD
GET_GOT
+#endif
bl cpu_init_f /* run low-level CPU init code (from Flash) */
bl board_init_f
/*----------------------------------------------------------------------- */
-#ifndef CONFIG_NAND_SPL
+#if !defined(CONFIG_NAND_SPL) && !defined(CONFIG_SPL_BUILD)
/*
* This code finishes saving the registers to the exception frame
* and jumps to the appropriate handler for the exception.
lwbrx r3,r0,r3
blr
+#if !defined(CONFIG_SPL_BUILD)
/*
* void relocate_code (addr_sp, gd, addr_moni)
*
mtlr r4 /* restore link register */
blr
+#endif /* CONFIG_SPL_BUILD */
#if defined(CONFIG_440)
/*----------------------------------------------------------------------------+
--- /dev/null
+/*
+ * Copyright 2012-2013 Stefan Roese <sr@denx.de>
+ *
+ * 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
+ */
+
+MEMORY
+{
+ sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR,
+ LENGTH = CONFIG_SPL_BSS_MAX_SIZE
+ flash : ORIGIN = CONFIG_SPL_TEXT_BASE,
+ LENGTH = CONFIG_SYS_SPL_MAX_LEN
+}
+
+OUTPUT_ARCH(powerpc)
+ENTRY(_start)
+SECTIONS
+{
+#ifdef CONFIG_440
+ .bootpg 0xfffff000 :
+ {
+ arch/powerpc/cpu/ppc4xx/start.o (.bootpg)
+
+ /*
+ * PPC440 board need a board specific object with the
+ * TLB definitions. This needs to get included right after
+ * start.o, since the first shadow TLB only covers 4k
+ * of address space.
+ */
+ CONFIG_BOARDDIR/init.o (.bootpg)
+ } > flash
+#endif
+
+ .resetvec 0xFFFFFFFC :
+ {
+ KEEP(*(.resetvec))
+ } > flash
+
+ .text :
+ {
+ __start = .;
+ arch/powerpc/cpu/ppc4xx/start.o (.text)
+ CONFIG_BOARDDIR/init.o (.text)
+ *(.text*)
+ } > flash
+
+ . = ALIGN(4);
+ .data : { *(SORT_BY_ALIGNMENT(.data*)) } > flash
+
+ . = ALIGN(4);
+ .rodata : { *(SORT_BY_ALIGNMENT(.rodata*)) } > flash
+
+ .bss :
+ {
+ . = ALIGN(4);
+ __bss_start = .;
+ *(.bss*)
+ . = ALIGN(4);
+ __bss_end = .;
+ } > sdram
+}
. = ALIGN(256);
__init_end = .;
+#ifndef CONFIG_SPL
#ifdef CONFIG_440
.bootpg RESET_VECTOR_ADDRESS - 0xffc :
{
#if (RESET_VECTOR_ADDRESS == 0xfffffffc)
. |= 0x10;
#endif
+#endif /* CONFIG_SPL */
__bss_start = .;
.bss (NOLOAD) :
projects / karo-tx-uboot.git / commitdiff