ARM: add Raspberry Pi model B board, using BCM2835 SoC
The Raspberry Pi model B uses the BCM2835 SoC, has 256MB of RAM, contains an SMSC 9512 USB LAN/Hub chip, and various IO connectors. For more details, see http://www.raspberrypi.org/. Various portions (cache enable, MACH_TYPE setup, RAM size limit, stack relocation to top of RAM) extracted from work by: Oleksandr Tymoshenko <gonzo@bluezbox.com>. GPIO driver enablement by Vikram Narayanan <vikram186@gmail.com>. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Tom Rini <trini@ti.com>
This commit is contained in:
Stephen Warren
Albert ARIBAUD
parent
efad6cf881
commit
0d04f34a35
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@ -952,6 +952,10 @@ Stephen Warren <swarren@nvidia.com>
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trimslice Tegra2 (ARM7 & A9 Dual Core)
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whistler Tegra2 (ARM7 & A9 Dual Core)
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Stephen Warren <swarren@wwwdotorg.org>
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rpi_b BCM2835 (ARM1176)
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Thomas Weber <weber@corscience.de>
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devkit8000 ARM ARMV7 (OMAP3530 SoC)
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@ -0,0 +1,34 @@
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# version 2 as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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include $(TOPDIR)/config.mk
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LIB = $(obj)lib$(BOARD).o
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COBJS := $(BOARD).o
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SRCS := $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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$(LIB): $(obj).depend $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#########################################################################
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@ -0,0 +1,34 @@
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/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <common.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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int dram_init(void)
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{
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gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
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return 0;
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}
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int board_init(void)
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{
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gd->bd->bi_boot_params = 0x100;
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return 0;
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}
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@ -53,6 +53,7 @@ mx35pdk arm arm1136 - freesca
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apollon arm arm1136 apollon - omap24xx
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omap2420h4 arm arm1136 - ti omap24xx
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tnetv107x_evm arm arm1176 tnetv107xevm ti tnetv107x
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rpi_b arm arm1176 rpi_b raspberrypi bcm2835
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integratorap_cm720t arm arm720t integrator armltd - integratorap:CM720T
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integratorap_cm920t arm arm920t integrator armltd - integratorap:CM920T
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integratorcp_cm920t arm arm920t integrator armltd - integratorcp:CM920T
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@ -0,0 +1,104 @@
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/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __CONFIG_H
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#define __CONFIG_H
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#include <asm/sizes.h>
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/* Architecture, CPU, etc.*/
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#define CONFIG_ARM1176
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#define CONFIG_BCM2835
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#define CONFIG_ARCH_CPU_INIT
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/*
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* 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
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* so 2708 has historically been used rather than a dedicated 2835 ID.
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*/
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#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
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/* Timer */
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#define CONFIG_SYS_HZ 1000000
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/* Memory layout */
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#define CONFIG_NR_DRAM_BANKS 1
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#define CONFIG_SYS_SDRAM_BASE 0x00000000
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#define CONFIG_SYS_TEXT_BASE 0x00008000
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#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
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/*
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* The board really has 256M. However, the VC (VideoCore co-processor) shares
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* the RAM, and uses a configurable portion at the top. We tell U-Boot that a
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* smaller amount of RAM is present in order to avoid stomping on the area
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* the VC uses.
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*/
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#define CONFIG_SYS_SDRAM_SIZE SZ_128M
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#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
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CONFIG_SYS_SDRAM_SIZE - \
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GENERATED_GBL_DATA_SIZE)
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#define CONFIG_SYS_MALLOC_LEN SZ_4M
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#define CONFIG_SYS_MEMTEST_START 0x00100000
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#define CONFIG_SYS_MEMTEST_END 0x00200000
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/* Flash */
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#define CONFIG_SYS_NO_FLASH
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/* Devices */
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/* GPIO */
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#define CONFIG_BCM2835_GPIO
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/* Console UART */
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#define CONFIG_PL011_SERIAL
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#define CONFIG_PL011_CLOCK 3000000
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#define CONFIG_PL01x_PORTS { (void *)0x20201000 }
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#define CONFIG_CONS_INDEX 0
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#define CONFIG_BAUDRATE 115200
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/* Console configuration */
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#define CONFIG_SYS_CBSIZE 1024
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#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
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sizeof(CONFIG_SYS_PROMPT) + 16)
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/* Environment */
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#define CONFIG_ENV_SIZE SZ_16K
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#define CONFIG_ENV_IS_NOWHERE
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#define CONFIG_SYS_LOAD_ADDR 0x1000000
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/* Shell */
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#define CONFIG_SYS_HUSH_PARSER
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#define CONFIG_SYS_MAXARGS 8
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#define CONFIG_SYS_PROMPT "U-Boot> "
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#define CONFIG_SYS_LONGHELP
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#define CONFIG_CMDLINE_EDITING
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#define CONFIG_COMMAND_HISTORY
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#define CONFIG_AUTO_COMPLETE
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/* Commands */
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#include <config_cmd_default.h>
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#define CONFIG_CMD_BOOTZ
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#define CONFIG_CMD_GPIO
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/* Some things don't make sense on this HW or yet */
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#undef CONFIG_CMD_FPGA
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#undef CONFIG_CMD_NET
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#undef CONFIG_CMD_NFS
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#undef CONFIG_CMD_SAVEENV
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/* Device tree support for bootm/bootz */
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#define CONFIG_OF_LIBFDT
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/* ATAGs support for bootm/bootz */
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#define CONFIG_SETUP_MEMORY_TAGS
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#define CONFIG_CMDLINE_TAG
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#define CONFIG_INITRD_TAG
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#endif
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