[U-Boot] [PATCH V4 1/4] README: fix references to config_cmd_default.h

[U-Boot] [PATCH V4 1/4] README: fix references to config_cmd_default.h

[Stephen Warren]

All usage of config_cmd_default.h uses <> for the include statement.
Update the README to do the same, rather than using "".

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
v4: No change
v3: No change
v2: New patch
---
 README |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README b/README
index dac46f3..a7deaf4 100644
--- a/README
+++ b/README
@@ -744,8 +744,8 @@ The following options need to be configured:
 - Monitor Functions:
 		Monitor commands can be included or excluded
 		from the build by using the #include files
-		"config_cmd_all.h" and #undef'ing unwanted
-		commands, or using "config_cmd_default.h"
+		<config_cmd_all.h> and #undef'ing unwanted
+		commands, or using <config_cmd_default.h>
 		and augmenting with additional #define's
 		for wanted commands.
 
-- 
1.7.9.5

[U-Boot] [PATCH V4 2/4] ARM: arm1176: enable instruction cache in arch_cpu_init()

[Stephen Warren]

Note that this affects all users of the ARM1176 CPU that enable
CONFIG_ARCH_CPU_INIT, not just the BCM2835 SoC, potentially such as
tnetv107x.

Cc: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
v4: No change
v3: No change, re-ordered patch
v2: No change
---
 arch/arm/cpu/arm1176/cpu.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/cpu/arm1176/cpu.c b/arch/arm/cpu/arm1176/cpu.c
index c0fd114..532a90b 100644
--- a/arch/arm/cpu/arm1176/cpu.c
+++ b/arch/arm/cpu/arm1176/cpu.c
@@ -65,3 +65,10 @@ static void cache_flush (void)
 	/* mem barrier to sync things */
 	asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (0));
 }
+
+int arch_cpu_init(void)
+{
+	icache_enable();
+
+	return 0;
+}
-- 
1.7.9.5

[U-Boot] [PATCH V4 3/4] ARM: add basic support for the Broadcom BCM2835 SoC

[Stephen Warren]

This SoC is used in the Raspberry Pi, for example.

For more details, see:
http://www.broadcom.com/products/BCM2835
http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf.

Initial support is enough to boot to a serial console, execute a minimal
set of U-Boot commands, download data over a serial port, and boot a
Linux kernel. No storage or network drivers are implemented.

GPIO driver originally by Vikram Narayanan <vikram186@gmail.com>
with many fixes from myself.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
---
v4: No change
v3: Squash base SoC, watchdog, and GPIO driver patches into one.
---
 arch/arm/cpu/arm1176/bcm2835/Makefile        |   37 +++++++++++
 arch/arm/cpu/arm1176/bcm2835/config.mk       |   19 ++++++
 arch/arm/cpu/arm1176/bcm2835/lowlevel_init.S |   19 ++++++
 arch/arm/cpu/arm1176/bcm2835/reset.c         |   35 ++++++++++
 arch/arm/cpu/arm1176/bcm2835/timer.c         |   55 ++++++++++++++++
 arch/arm/include/asm/arch-bcm2835/gpio.h     |   66 +++++++++++++++++++
 arch/arm/include/asm/arch-bcm2835/timer.h    |   37 +++++++++++
 arch/arm/include/asm/arch-bcm2835/wdog.h     |   37 +++++++++++
 drivers/gpio/Makefile                        |    1 +
 drivers/gpio/bcm2835_gpio.c                  |   90 ++++++++++++++++++++++++++
 10 files changed, 396 insertions(+)
 create mode 100644 arch/arm/cpu/arm1176/bcm2835/Makefile
 create mode 100644 arch/arm/cpu/arm1176/bcm2835/config.mk
 create mode 100644 arch/arm/cpu/arm1176/bcm2835/lowlevel_init.S
 create mode 100644 arch/arm/cpu/arm1176/bcm2835/reset.c
 create mode 100644 arch/arm/cpu/arm1176/bcm2835/timer.c
 create mode 100644 arch/arm/include/asm/arch-bcm2835/gpio.h
 create mode 100644 arch/arm/include/asm/arch-bcm2835/timer.h
 create mode 100644 arch/arm/include/asm/arch-bcm2835/wdog.h
 create mode 100644 drivers/gpio/bcm2835_gpio.c

diff --git a/arch/arm/cpu/arm1176/bcm2835/Makefile b/arch/arm/cpu/arm1176/bcm2835/Makefile
new file mode 100644
index 0000000..4ea6d6b
--- /dev/null
+++ b/arch/arm/cpu/arm1176/bcm2835/Makefile
@@ -0,0 +1,37 @@
+#
+# 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.
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(SOC).o
+
+SOBJS	:= lowlevel_init.o
+COBJS	:= reset.o timer.o
+
+SRCS	:= $(SOBJS:.o=.c) $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
+
+all:	$(obj).depend $(LIB)
+
+$(LIB):	$(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/arch/arm/cpu/arm1176/bcm2835/config.mk b/arch/arm/cpu/arm1176/bcm2835/config.mk
new file mode 100644
index 0000000..b87ce24
--- /dev/null
+++ b/arch/arm/cpu/arm1176/bcm2835/config.mk
@@ -0,0 +1,19 @@
+#
+# (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.
+
+# Don't attempt to override the target CPU/ABI options;
+# the Raspberry Pi toolchain does the right thing by default.
+PLATFORM_RELFLAGS := $(filter-out -msoft-float,$(PLATFORM_RELFLAGS))
+PLATFORM_CPPFLAGS := $(filter-out -march=armv5t,$(PLATFORM_CPPFLAGS))
diff --git a/arch/arm/cpu/arm1176/bcm2835/lowlevel_init.S b/arch/arm/cpu/arm1176/bcm2835/lowlevel_init.S
new file mode 100644
index 0000000..c7b0843
--- /dev/null
+++ b/arch/arm/cpu/arm1176/bcm2835/lowlevel_init.S
@@ -0,0 +1,19 @@
+/*
+ * (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.
+ */
+
+.globl lowlevel_init
+lowlevel_init:
+	mov	pc, lr
diff --git a/arch/arm/cpu/arm1176/bcm2835/reset.c b/arch/arm/cpu/arm1176/bcm2835/reset.c
new file mode 100644
index 0000000..8c37ad9
--- /dev/null
+++ b/arch/arm/cpu/arm1176/bcm2835/reset.c
@@ -0,0 +1,35 @@
+/*
+ * (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.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/wdog.h>
+
+#define RESET_TIMEOUT 10
+
+void reset_cpu(ulong addr)
+{
+	struct bcm2835_wdog_regs *regs =
+		(struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;
+	uint32_t rstc;
+
+	rstc = readl(&regs->rstc);
+	rstc &= ~BCM2835_WDOG_RSTC_WRCFG_MASK;
+	rstc |= BCM2835_WDOG_RSTC_WRCFG_FULL_RESET;
+
+	writel(BCM2835_WDOG_PASSWORD | RESET_TIMEOUT, &regs->wdog);
+	writel(BCM2835_WDOG_PASSWORD | rstc, &regs->rstc);
+}
diff --git a/arch/arm/cpu/arm1176/bcm2835/timer.c b/arch/arm/cpu/arm1176/bcm2835/timer.c
new file mode 100644
index 0000000..d232d7e
--- /dev/null
+++ b/arch/arm/cpu/arm1176/bcm2835/timer.c
@@ -0,0 +1,55 @@
+/*
+ * (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.
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/timer.h>
+
+int timer_init(void)
+{
+	return 0;
+}
+
+ulong get_timer(ulong base)
+{
+	struct bcm2835_timer_regs *regs =
+		(struct bcm2835_timer_regs *)BCM2835_TIMER_PHYSADDR;
+
+	return readl(&regs->clo) - base;
+}
+
+unsigned long long get_ticks(void)
+{
+	return get_timer(0);
+}
+
+ulong get_tbclk(void)
+{
+	return CONFIG_SYS_HZ;
+}
+
+void __udelay(unsigned long usec)
+{
+	ulong endtime;
+	signed long diff;
+
+	endtime = get_timer(0) + usec;
+
+	do {
+		ulong now = get_timer(0);
+		diff = endtime - now;
+	} while (diff >= 0);
+}
diff --git a/arch/arm/include/asm/arch-bcm2835/gpio.h b/arch/arm/include/asm/arch-bcm2835/gpio.h
new file mode 100644
index 0000000..0e70856
--- /dev/null
+++ b/arch/arm/include/asm/arch-bcm2835/gpio.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2012 Vikram Narayananan
+ * <vikram186@gmail.com>
+ *
+ * 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.
+ */
+
+#ifndef _BCM2835_GPIO_H_
+#define _BCM2835_GPIO_H_
+
+#define BCM2835_GPIO_BASE		0x20200000
+#define BCM2835_GPIO_COUNT		54
+
+#define BCM2835_GPIO_FSEL_MASK		0x7
+#define BCM2835_GPIO_INPUT		0x0
+#define BCM2835_GPIO_OUTPUT		0x1
+#define BCM2835_GPIO_ALT0		0x4
+#define BCM2835_GPIO_ALT1		0x5
+#define BCM2835_GPIO_ALT2		0x6
+#define BCM2835_GPIO_ALT3		0x7
+#define BCM2835_GPIO_ALT4		0x3
+#define BCM2835_GPIO_ALT5		0x2
+
+#define BCM2835_GPIO_COMMON_BANK(gpio)	((gpio < 32) ? 0 : 1)
+#define BCM2835_GPIO_COMMON_SHIFT(gpio)	(gpio & 0x1f)
+
+#define BCM2835_GPIO_FSEL_BANK(gpio)	(gpio / 10)
+#define BCM2835_GPIO_FSEL_SHIFT(gpio)	((gpio % 10) * 3)
+
+struct bcm2835_gpio_regs {
+	u32 gpfsel[6];
+	u32 reserved1;
+	u32 gpset[2];
+	u32 reserved2;
+	u32 gpclr[2];
+	u32 reserved3;
+	u32 gplev[2];
+	u32 reserved4;
+	u32 gpeds[2];
+	u32 reserved5;
+	u32 gpren[2];
+	u32 reserved6;
+	u32 gpfen[2];
+	u32 reserved7;
+	u32 gphen[2];
+	u32 reserved8;
+	u32 gplen[2];
+	u32 reserved9;
+	u32 gparen[2];
+	u32 reserved10;
+	u32 gppud;
+	u32 gppudclk[2];
+};
+
+#endif /* _BCM2835_GPIO_H_ */
diff --git a/arch/arm/include/asm/arch-bcm2835/timer.h b/arch/arm/include/asm/arch-bcm2835/timer.h
new file mode 100644
index 0000000..30c70e0
--- /dev/null
+++ b/arch/arm/include/asm/arch-bcm2835/timer.h
@@ -0,0 +1,37 @@
+/*
+ * (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 _BCM2835_TIMER_H
+#define _BCM2835_TIMER_H
+
+#define BCM2835_TIMER_PHYSADDR	0x20003000
+
+struct bcm2835_timer_regs {
+	u32 cs;
+	u32 clo;
+	u32 chi;
+	u32 c0;
+	u32 c1;
+	u32 c2;
+	u32 c3;
+};
+
+#define BCM2835_TIMER_CS_M3	(1 << 3)
+#define BCM2835_TIMER_CS_M2	(1 << 2)
+#define BCM2835_TIMER_CS_M1	(1 << 1)
+#define BCM2835_TIMER_CS_M0	(1 << 0)
+
+#endif
diff --git a/arch/arm/include/asm/arch-bcm2835/wdog.h b/arch/arm/include/asm/arch-bcm2835/wdog.h
new file mode 100644
index 0000000..d750a62
--- /dev/null
+++ b/arch/arm/include/asm/arch-bcm2835/wdog.h
@@ -0,0 +1,37 @@
+/*
+ * (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 _BCM2835_TIMER_H
+#define _BCM2835_TIMER_H
+
+#define BCM2835_WDOG_PHYSADDR			0x20100000
+
+struct bcm2835_wdog_regs {
+	u32 unknown0[7];
+	u32 rstc;
+	u32 unknown1;
+	u32 wdog;
+};
+
+#define BCM2835_WDOG_PASSWORD			0x5a000000
+
+#define BCM2835_WDOG_RSTC_WRCFG_MASK		0x00000030
+#define BCM2835_WDOG_RSTC_WRCFG_FULL_RESET	0x00000020
+
+#define BCM2835_WDOG_WDOG_TIMEOUT_MASK		0x0000ffff
+
+#endif
+
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 32a2474..8d2f2b2 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -40,6 +40,7 @@ COBJS-$(CONFIG_TEGRA_GPIO)	+= tegra_gpio.o
 COBJS-$(CONFIG_DA8XX_GPIO)	+= da8xx_gpio.o
 COBJS-$(CONFIG_ALTERA_PIO)	+= altera_pio.o
 COBJS-$(CONFIG_MPC83XX_GPIO)	+= mpc83xx_gpio.o
+COBJS-$(CONFIG_BCM2835_GPIO)	+= bcm2835_gpio.o
 
 COBJS	:= $(COBJS-y)
 SRCS 	:= $(COBJS:.o=.c)
diff --git a/drivers/gpio/bcm2835_gpio.c b/drivers/gpio/bcm2835_gpio.c
new file mode 100644
index 0000000..6ab2df3
--- /dev/null
+++ b/drivers/gpio/bcm2835_gpio.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2012 Vikram Narayananan
+ * <vikram186@gmail.com>
+ *
+ * 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 <asm/gpio.h>
+#include <asm/io.h>
+
+inline int gpio_is_valid(unsigned gpio)
+{
+	return (gpio < BCM2835_GPIO_COUNT);
+}
+
+int gpio_request(unsigned gpio, const char *label)
+{
+	return !gpio_is_valid(gpio);
+}
+
+int gpio_free(unsigned gpio)
+{
+	return 0;
+}
+
+int gpio_direction_input(unsigned gpio)
+{
+	struct bcm2835_gpio_regs *reg =
+		(struct bcm2835_gpio_regs *)BCM2835_GPIO_BASE;
+	unsigned val;
+
+	val = readl(&reg->gpfsel[BCM2835_GPIO_FSEL_BANK(gpio)]);
+	val &= ~(BCM2835_GPIO_FSEL_MASK << BCM2835_GPIO_FSEL_SHIFT(gpio));
+	val |= (BCM2835_GPIO_INPUT << BCM2835_GPIO_FSEL_SHIFT(gpio));
+	writel(val, &reg->gpfsel[BCM2835_GPIO_FSEL_BANK(gpio)]);
+
+	return 0;
+}
+
+int gpio_direction_output(unsigned gpio, int value)
+{
+	struct bcm2835_gpio_regs *reg =
+		(struct bcm2835_gpio_regs *)BCM2835_GPIO_BASE;
+	unsigned val;
+
+	gpio_set_value(gpio, value);
+
+	val = readl(&reg->gpfsel[BCM2835_GPIO_FSEL_BANK(gpio)]);
+	val &= ~(BCM2835_GPIO_FSEL_MASK << BCM2835_GPIO_FSEL_SHIFT(gpio));
+	val |= (BCM2835_GPIO_OUTPUT << BCM2835_GPIO_FSEL_SHIFT(gpio));
+	writel(val, &reg->gpfsel[BCM2835_GPIO_FSEL_BANK(gpio)]);
+
+	return 0;
+}
+
+int gpio_get_value(unsigned gpio)
+{
+	struct bcm2835_gpio_regs *reg =
+		(struct bcm2835_gpio_regs *)BCM2835_GPIO_BASE;
+	unsigned val;
+
+	val = readl(&reg->gplev[BCM2835_GPIO_COMMON_BANK(gpio)]);
+
+	return (val >> BCM2835_GPIO_COMMON_SHIFT(gpio)) & 0x1;
+}
+
+int gpio_set_value(unsigned gpio, int value)
+{
+	struct bcm2835_gpio_regs *reg =
+		(struct bcm2835_gpio_regs *)BCM2835_GPIO_BASE;
+	u32 *output_reg = value ? reg->gpset : reg->gpclr;
+
+	writel(1 << BCM2835_GPIO_COMMON_SHIFT(gpio),
+				&output_reg[BCM2835_GPIO_COMMON_BANK(gpio)]);
+
+	return 0;
+}
+
-- 
1.7.9.5

[U-Boot] [PATCH V4 4/4] ARM: add Raspberry Pi model B board, using BCM2835 SoC

[Stephen Warren]

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>
---
v4: Remove redundant CONFIG_SYS_BAUDRATE_TABLE, CONFIG_SYS_PROMPT_HUSH_PS2.
v3: Squash a number of patches into this single patch.
---
 MAINTAINERS                      |    4 ++
 board/raspberrypi/rpi_b/Makefile |   34 +++++++++++++
 board/raspberrypi/rpi_b/rpi_b.c  |   34 +++++++++++++
 boards.cfg                       |    1 +
 include/configs/rpi_b.h          |  104 ++++++++++++++++++++++++++++++++++++++
 5 files changed, 177 insertions(+)
 create mode 100644 board/raspberrypi/rpi_b/Makefile
 create mode 100644 board/raspberrypi/rpi_b/rpi_b.c
 create mode 100644 include/configs/rpi_b.h

diff --git a/MAINTAINERS b/MAINTAINERS
index fd0c65c..abe621e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -928,6 +928,10 @@ Stephen Warren <swarren@nvidia.com>
 	trimslice	Tegra2 (ARM7 & A9 Dual Core)
 	whistler	Tegra2 (ARM7 & A9 Dual Core)
 
+Stephen Warren <swarren@wwwdotorg.org>
+
+	rpi_b		BCM2835 (ARM1176)
+
 Thomas Weber <weber@corscience.de>
 
 	devkit8000	ARM ARMV7 (OMAP3530 SoC)
diff --git a/board/raspberrypi/rpi_b/Makefile b/board/raspberrypi/rpi_b/Makefile
new file mode 100644
index 0000000..9d0c377
--- /dev/null
+++ b/board/raspberrypi/rpi_b/Makefile
@@ -0,0 +1,34 @@
+#
+# 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.
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= $(obj)lib$(BOARD).o
+
+COBJS	:= $(BOARD).o
+
+SRCS	:= $(COBJS:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS))
+
+$(LIB):	$(obj).depend $(OBJS)
+	$(call cmd_link_o_target, $(OBJS))
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
diff --git a/board/raspberrypi/rpi_b/rpi_b.c b/board/raspberrypi/rpi_b/rpi_b.c
new file mode 100644
index 0000000..688b0aa
--- /dev/null
+++ b/board/raspberrypi/rpi_b/rpi_b.c
@@ -0,0 +1,34 @@
+/*
+ * (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.
+ */
+
+#include <common.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+	return 0;
+}
+
+int board_init(void)
+{
+	gd->bd->bi_boot_params = 0x100;
+
+	return 0;
+}
diff --git a/boards.cfg b/boards.cfg
index 2d36d83..7a88eb9 100644
--- a/boards.cfg
+++ b/boards.cfg
@@ -48,6 +48,7 @@ mx35pdk                      arm         arm1136     -                   freesca
 apollon			     arm	 arm1136     apollon		 -	        omap24xx
 omap2420h4                   arm         arm1136     -                   ti             omap24xx
 tnetv107x_evm                arm         arm1176     tnetv107xevm        ti             tnetv107x
+rpi_b                        arm         arm1176     rpi_b               raspberrypi    bcm2835
 integratorap_cm720t          arm         arm720t     integrator          armltd         -           integratorap:CM720T
 integratorap_cm920t          arm         arm920t     integrator          armltd         -           integratorap:CM920T
 integratorcp_cm920t          arm         arm920t     integrator          armltd         -           integratorcp:CM920T
diff --git a/include/configs/rpi_b.h b/include/configs/rpi_b.h
new file mode 100644
index 0000000..cf62e45
--- /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
-- 
1.7.9.5

[U-Boot] [PATCH V4 4/4] ARM: add Raspberry Pi model B board, using BCM2835 SoC

[Tom Rini]

On Sun, Aug 05, 2012 at 08:07:22PM -0600, Stephen Warren wrote:
> 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>

Thanks for cycling over the series again.

Acked-by: Tom Rini <trini@ti.com>

-- 
Tom

[U-Boot] [PATCH V4 1/4] README: fix references to config_cmd_default.h

[Tom Rini]

On Sun, Aug 05, 2012 at 08:07:19PM -0600, Stephen Warren wrote:

> All usage of config_cmd_default.h uses <> for the include statement.
> Update the README to do the same, rather than using "".
> 
> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>

I've applied the whole series to u-boot-staging/trini at ti.com, thanks!

-- 
Tom
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[U-Boot] [PATCH V4 2/4] ARM: arm1176: enable instruction cache in arch_cpu_init()

[Simon Glass]

On Sun, Aug 5, 2012 at 7:07 PM, Stephen Warren <swarren@wwwdotorg.org> wrote:
> Note that this affects all users of the ARM1176 CPU that enable
> CONFIG_ARCH_CPU_INIT, not just the BCM2835 SoC, potentially such as
> tnetv107x.
>
> Cc: Cyril Chemparathy <cyril@ti.com>
> Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>

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

> ---
> v4: No change
> v3: No change, re-ordered patch
> v2: No change
> ---
>  arch/arm/cpu/arm1176/cpu.c |    7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/cpu/arm1176/cpu.c b/arch/arm/cpu/arm1176/cpu.c
> index c0fd114..532a90b 100644
> --- a/arch/arm/cpu/arm1176/cpu.c
> +++ b/arch/arm/cpu/arm1176/cpu.c
> @@ -65,3 +65,10 @@ static void cache_flush (void)
>         /* mem barrier to sync things */
>         asm ("mcr p15, 0, %0, c7, c10, 4": :"r" (0));
>  }
> +
> +int arch_cpu_init(void)
> +{
> +       icache_enable();
> +
> +       return 0;
> +}
> --
> 1.7.9.5
>
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot