Introduce generic post-relocation board_r.c

This file handles common post-relocation init for boards which use
the generic framework.

Signed-off-by: Simon Glass <sjg@chromium.org>

2 files changed, 423 insertions, 0 deletions

diff --git a/common/Makefile b/common/Makefile
index a5f5b1a5886..08af1a8acfa 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -38,6 +38,7 @@ COBJS-y += cmd_disk.o
 
 # boards
 COBJS-$(CONFIG_SYS_GENERIC_BOARD) += board_f.o
+COBJS-$(CONFIG_SYS_GENERIC_BOARD) += board_r.o
 
 # core command
 COBJS-y += cmd_boot.o
diff --git a/common/board_r.c b/common/board_r.c
new file mode 100644
index 00000000000..06b0df0003d
--- /dev/null
+++ b/common/board_r.c
@@ -0,0 +1,422 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.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.
+ *
+ * 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>
+#ifdef CONFIG_HAS_DATAFLASH
+#include <dataflash.h>
+#endif
+#include <environment.h>
+#include <fdtdec.h>
+#include <initcall.h>
+#include <logbuff.h>
+#include <malloc.h>
+#include <mmc.h>
+#include <nand.h>
+#include <onenand_uboot.h>
+#include <serial.h>
+#include <stdio_dev.h>
+#include <asm/sections.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+ulong monitor_flash_len;
+
+
+static int initr_reloc(void)
+{
+	gd->flags |= GD_FLG_RELOC;	/* tell others: relocation done */
+	bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
+
+	return 0;
+}
+
+#ifdef CONFIG_ARM
+/*
+ * Some of these functions are needed purely because the functions they
+ * call return void. If we change them to return 0, these stubs can go away.
+ */
+static int initr_caches(void)
+{
+	/* Enable caches */
+	enable_caches();
+	return 0;
+}
+#endif
+
+static int initr_reloc_global_data(void)
+{
+#ifdef CONFIG_SYS_SYM_OFFSETS
+	monitor_flash_len = _end_ofs;
+#else
+	monitor_flash_len = (ulong)&__init_end - gd->dest_addr;
+#endif
+}
+
+static int initr_serial(void)
+{
+	serial_initialize();
+	return 0;
+}
+
+#ifdef CONFIG_LOGBUFFER
+unsigned long logbuffer_base(void)
+{
+	return gd->ram_top - LOGBUFF_LEN;
+}
+
+static int initr_logbuffer(void)
+{
+	logbuff_init_ptrs();
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_POST
+static int initr_post_backlog(void)
+{
+	post_output_backlog();
+	return 0;
+}
+#endif
+
+static int initr_malloc(void)
+{
+	ulong malloc_start;
+
+	/* The malloc area is immediately below the monitor copy in DRAM */
+	malloc_start = gd->dest_addr - TOTAL_MALLOC_LEN;
+	mem_malloc_init(malloc_start, TOTAL_MALLOC_LEN);
+	return 0;
+}
+
+__weak int power_init_board(void)
+{
+	return 0;
+}
+
+static int initr_announce(void)
+{
+	debug("Now running in RAM - U-Boot at: %08lx\n", gd->dest_addr);
+	return 0;
+}
+
+#if !defined(CONFIG_SYS_NO_FLASH)
+static int initr_flash(void)
+{
+	ulong flash_size;
+
+	puts("Flash: ");
+
+	flash_size = flash_init();
+	if (flash_size <= 0) {
+		puts("*** failed ***\n");
+		return -1;
+	}
+	print_size(flash_size, "");
+#ifdef CONFIG_SYS_FLASH_CHECKSUM
+	/*
+	* Compute and print flash CRC if flashchecksum is set to 'y'
+	*
+	* NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
+	*/
+	if (getenv_yesno("flashchecksum") == 1) {
+		printf("  CRC: %08X", crc32(0,
+			(const unsigned char *) CONFIG_SYS_FLASH_BASE,
+			flash_size));
+	}
+#endif /* CONFIG_SYS_FLASH_CHECKSUM */
+	putc('\n');
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_CMD_NAND
+/* go init the NAND */
+int initr_nand(void)
+{
+	puts("NAND:  ");
+	nand_init();
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_CMD_ONENAND)
+/* go init the NAND */
+int initr_onenand(void)
+{
+	puts("NAND:  ");
+	onenand_init();
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_GENERIC_MMC
+int initr_mmc(void)
+{
+	puts("MMC:   ");
+	mmc_initialize(gd->bd);
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_HAS_DATAFLASH
+int initr_dataflash(void)
+{
+	AT91F_DataflashInit();
+	dataflash_print_info();
+	return 0;
+}
+#endif
+
+/*
+ * Tell if it's OK to load the environment early in boot.
+ *
+ * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
+ * if this is OK (defaulting to saying it's OK).
+ *
+ * NOTE: Loading the environment early can be a bad idea if security is
+ *       important, since no verification is done on the environment.
+ *
+ * @return 0 if environment should not be loaded, !=0 if it is ok to load
+ */
+static int should_load_env(void)
+{
+#ifdef CONFIG_OF_CONTROL
+	return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
+#elif defined CONFIG_DELAY_ENVIRONMENT
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+static int initr_env(void)
+{
+	/* initialize environment */
+	if (should_load_env())
+		env_relocate();
+	else
+		set_default_env(NULL);
+
+	/* Initialize from environment */
+	load_addr = getenv_ulong("loadaddr", 16, load_addr);
+	return 0;
+}
+
+static int initr_jumptable(void)
+{
+	jumptable_init();
+	return 0;
+}
+
+#if defined(CONFIG_API)
+static int initr_api(void)
+{
+	/* Initialize API */
+	api_init();
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_DISPLAY_BOARDINFO_LATE
+static int show_model_r(void)
+{
+	/* Put this here so it appears on the LCD, now it is ready */
+# ifdef CONFIG_OF_CONTROL
+	const char *model;
+
+	model = (char *)fdt_getprop(gd->fdt_blob, 0, "model", NULL);
+	printf("Model: %s\n", model ? model : "<unknown>");
+# else
+	checkboard();
+# endif
+}
+#endif
+
+/* enable exceptions */
+static int initr_enable_interrupts(void)
+{
+	enable_interrupts();
+	return 0;
+}
+
+#ifdef CONFIG_CMD_NET
+static int initr_ethaddr(void)
+{
+
+	return 0;
+}
+#endif /* CONFIG_CMD_NET */
+
+#ifdef CONFIG_BITBANGMII
+static int initr_bbmii(void)
+{
+	bb_miiphy_init();
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_CMD_NET
+static int initr_net(void)
+{
+	puts("Net:   ");
+	eth_initialize(gd->bd);
+#if defined(CONFIG_RESET_PHY_R)
+	debug("Reset Ethernet PHY\n");
+	reset_phy();
+#endif
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_POST
+static int initr_post(void)
+{
+	post_run(NULL, POST_RAM | post_bootmode_get(0));
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
+/*
+ * Export available size of memory for Linux, taking into account the
+ * protected RAM at top of memory
+ */
+int initr_mem(void)
+{
+	ulong pram = 0;
+	char memsz[32];
+
+# ifdef CONFIG_PRAM
+	pram = getenv_ulong("pram", 10, CONFIG_PRAM);
+# endif
+# if defined(CONFIG_LOGBUFFER) && !defined(CONFIG_ALT_LB_ADDR)
+	/* Also take the logbuffer into account (pram is in kB) */
+	pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
+# endif
+	sprintf(memsz, "%ldk", (gd->ram_size / 1024) - pram);
+	setenv("mem", memsz);
+}
+#endif
+
+static int run_main_loop(void)
+{
+	/* main_loop() can return to retry autoboot, if so just run it again */
+	for (;;)
+		main_loop();
+	return 0;
+}
+
+/*
+ * Over time we hope to remove these functions with code fragments and
+ * stub funtcions, and instead call the relevant function directly.
+ *
+ * We also hope to remove most of the driver-related init and do it if/when
+ * the driver is later used.
+ */
+init_fnc_t init_sequence_r[] = {
+	initr_reloc,
+#ifdef CONFIG_ARM
+	initr_caches,
+	board_init,	/* Setup chipselects */
+#endif
+	initr_reloc_global_data,
+	initr_serial,
+	initr_announce,
+#ifdef CONFIG_LOGBUFFER
+	initr_logbuffer,
+#endif
+#ifdef CONFIG_POST
+	initr_post_backlog,
+#endif
+	initr_malloc,
+#ifdef CONFIG_ARCH_EARLY_INIT_R
+	arch_early_init_r,
+#endif
+	power_init_board,
+#ifndef CONFIG_SYS_NO_FLASH
+	initr_flash,
+#endif
+#ifdef CONFIG_CMD_NAND
+	initr_nand,
+#endif
+#ifdef CONFIG_CMD_ONENAND
+	initr_onenand,
+#endif
+#ifdef CONFIG_GENERIC_MMC
+	initr_mmc,
+#endif
+#ifdef CONFIG_HAS_DATAFLASH
+	initr_dataflash,
+#endif
+	initr_env,
+	stdio_init,
+	initr_jumptable,
+#ifdef CONFIG_API
+	initr_api,
+#endif
+	console_init_r,		/* fully init console as a device */
+#ifdef CONFIG_DISPLAY_BOARDINFO_LATE
+	show_model_r,
+#endif
+#ifdef CONFIG_ARCH_MISC_INIT
+	arch_misc_init,		/* miscellaneous arch-dependent init */
+#endif
+#ifdef CONFIG_MISC_INIT_R
+	misc_init_r,		/* miscellaneous platform-dependent init */
+#endif
+	interrupt_init,
+	initr_enable_interrupts,
+#ifdef CONFIG_CMD_NET
+	initr_ethaddr,
+#endif
+#ifdef CONFIG_BOARD_LATE_INIT
+	board_late_init,
+#endif
+#ifdef CONFIG_BITBANGMII
+	initr_bbmii,
+#endif
+#ifdef CONFIG_CMD_NET
+	initr_net,
+#endif
+#ifdef CONFIG_POST
+	initr_post,
+#endif
+	run_main_loop,
+};
+
+void board_init_r(gd_t *new_gd, ulong dest_addr)
+{
+	gd = new_gd;
+	if (initcall_run_list(init_sequence_r))
+		hang();
+
+	/* NOTREACHED - run_main_loop() does not return */
+	hang();
+}