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authorStephen Warren <swarren@wwwdotorg.org>2012-08-05 16:07:22 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-09-01 14:58:21 +0200
commit0d04f34a357d004364b58159b64aad354e65137e (patch)
tree8b1d913d391a4b4693b33b261280765ed47a39a7 /include/configs
parentefad6cf8818620b0d85405df2b810760b62acbb8 (diff)
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>
Diffstat (limited to 'include/configs')
-rw-r--r--include/configs/rpi_b.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/include/configs/rpi_b.h b/include/configs/rpi_b.h
new file mode 100644
index 0000000000..cf62e45e8b
--- /dev/null
+++ b/include/configs/rpi_b.h
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2012 Stephen Warren
+ *
+ * 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
+ * version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <asm/sizes.h>
+
+/* Architecture, CPU, etc.*/
+#define CONFIG_ARM1176
+#define CONFIG_BCM2835
+#define CONFIG_ARCH_CPU_INIT
+/*
+ * 2835 is a SKU in a series for which the 2708 is the first or primary SoC,
+ * so 2708 has historically been used rather than a dedicated 2835 ID.
+ */
+#define CONFIG_MACH_TYPE MACH_TYPE_BCM2708
+
+/* Timer */
+#define CONFIG_SYS_HZ 1000000
+
+/* Memory layout */
+#define CONFIG_NR_DRAM_BANKS 1
+#define CONFIG_SYS_SDRAM_BASE 0x00000000
+#define CONFIG_SYS_TEXT_BASE 0x00008000
+#define CONFIG_SYS_UBOOT_BASE CONFIG_SYS_TEXT_BASE
+/*
+ * The board really has 256M. However, the VC (VideoCore co-processor) shares
+ * the RAM, and uses a configurable portion at the top. We tell U-Boot that a
+ * smaller amount of RAM is present in order to avoid stomping on the area
+ * the VC uses.
+ */
+#define CONFIG_SYS_SDRAM_SIZE SZ_128M
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
+ CONFIG_SYS_SDRAM_SIZE - \
+ GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_MALLOC_LEN SZ_4M
+#define CONFIG_SYS_MEMTEST_START 0x00100000
+#define CONFIG_SYS_MEMTEST_END 0x00200000
+
+/* Flash */
+#define CONFIG_SYS_NO_FLASH
+
+/* Devices */
+/* GPIO */
+#define CONFIG_BCM2835_GPIO
+
+/* Console UART */
+#define CONFIG_PL011_SERIAL
+#define CONFIG_PL011_CLOCK 3000000
+#define CONFIG_PL01x_PORTS { (void *)0x20201000 }
+#define CONFIG_CONS_INDEX 0
+#define CONFIG_BAUDRATE 115200
+
+/* Console configuration */
+#define CONFIG_SYS_CBSIZE 1024
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE + \
+ sizeof(CONFIG_SYS_PROMPT) + 16)
+
+/* Environment */
+#define CONFIG_ENV_SIZE SZ_16K
+#define CONFIG_ENV_IS_NOWHERE
+#define CONFIG_SYS_LOAD_ADDR 0x1000000
+
+/* Shell */
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_MAXARGS 8
+#define CONFIG_SYS_PROMPT "U-Boot> "
+#define CONFIG_SYS_LONGHELP
+#define CONFIG_CMDLINE_EDITING
+#define CONFIG_COMMAND_HISTORY
+#define CONFIG_AUTO_COMPLETE
+
+/* Commands */
+#include <config_cmd_default.h>
+#define CONFIG_CMD_BOOTZ
+#define CONFIG_CMD_GPIO
+/* Some things don't make sense on this HW or yet */
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_NET
+#undef CONFIG_CMD_NFS
+#undef CONFIG_CMD_SAVEENV
+
+/* Device tree support for bootm/bootz */
+#define CONFIG_OF_LIBFDT
+/* ATAGs support for bootm/bootz */
+#define CONFIG_SETUP_MEMORY_TAGS
+#define CONFIG_CMDLINE_TAG
+#define CONFIG_INITRD_TAG
+
+#endif