[U-Boot] [PATCH v5 11/23] Introduce generic post-relocation board_r.c
Simon Glass
sjg at chromium.org
Fri Feb 8 16:12:07 CET 2013
This file handles common post-relocation init for boards which use
the generic framework.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
Changes in v5:
- Add code from arch/arm/lib/board.c to control loading of environment
- Put watchdog init function definitions in watchdog.h
- Adjust ppc to work with watchdog.h additions
Changes in v4:
- Use asm/sections.h instead of asm-generic/sections.h
Changes in v3: None
Changes in v2: None
arch/powerpc/lib/board.c | 3 +-
common/Makefile | 1 +
common/board_r.c | 424 +++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 427 insertions(+), 1 deletion(-)
create mode 100644 common/board_r.c
diff --git a/arch/powerpc/lib/board.c b/arch/powerpc/lib/board.c
index acb6fdb..422b4a3 100644
--- a/arch/powerpc/lib/board.c
+++ b/arch/powerpc/lib/board.c
@@ -319,7 +319,8 @@ static init_fnc_t *init_sequence[] = {
#ifdef CONFIG_POST
post_init_f,
#endif
- INIT_FUNC_WATCHDOG_RESET init_func_ram,
+ INIT_FUNC_WATCHDOG_RESET
+ init_func_ram,
#if defined(CONFIG_SYS_DRAM_TEST)
testdram,
#endif /* CONFIG_SYS_DRAM_TEST */
diff --git a/common/Makefile b/common/Makefile
index 17ae3ff..275ad90 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 0000000..2511471
--- /dev/null
+++ b/common/board_r.c
@@ -0,0 +1,424 @@
+/*
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd at denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger at 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));
+ }
+ putc('\n');
+#else /* !CONFIG_SYS_FLASH_CHECKSUM */
+ print_size(flash_size, "\n");
+#endif /* CONFIG_SYS_FLASH_CHECKSUM */
+
+ 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();
+}
--
1.8.1
More information about the U-Boot
mailing list