[RFC 4/8] ARM: DIGIC: add Canon PowerShot A1100 IS support

[Antony Pavlov]

Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
---
 arch/arm/boards/Makefile                 |  1 +
 arch/arm/boards/canon-a1100/Makefile     |  1 +
 arch/arm/boards/canon-a1100/env/bin/init | 15 +++++++++++++++
 arch/arm/boards/canon-a1100/env/bin/zup  | 11 +++++++++++
 arch/arm/boards/canon-a1100/lowlevel.c   | 23 +++++++++++++++++++++++
 arch/arm/dts/canon-a1100.dts             | 26 ++++++++++++++++++++++++++
 arch/arm/mach-digic/Kconfig              |  8 ++++++++
 7 files changed, 85 insertions(+)
 create mode 100644 arch/arm/boards/canon-a1100/Makefile
 create mode 100644 arch/arm/boards/canon-a1100/env/bin/init
 create mode 100644 arch/arm/boards/canon-a1100/env/bin/zup
 create mode 100644 arch/arm/boards/canon-a1100/lowlevel.c
 create mode 100644 arch/arm/dts/canon-a1100.dts

diff --git a/arch/arm/boards/Makefile b/arch/arm/boards/Makefile
index 38ef512..76f21be 100644
--- a/arch/arm/boards/Makefile
+++ b/arch/arm/boards/Makefile
@@ -12,6 +12,7 @@ obj-$(CONFIG_MACH_AT91SAM9N12EK)		+= at91sam9n12ek/
 obj-$(CONFIG_MACH_AT91SAM9X5EK)			+= at91sam9x5ek/
 obj-$(CONFIG_MACH_BEAGLE)			+= beagle/
 obj-$(CONFIG_MACH_BEAGLEBONE)			+= beaglebone/
+obj-$(CONFIG_MACH_CANON_A1100)			+= canon-a1100/
 obj-$(CONFIG_MACH_CCMX51)			+= ccxmx51/
 obj-$(CONFIG_MACH_CFA10036)			+= crystalfontz-cfa10036/
 obj-$(CONFIG_MACH_CHUMBY)			+= chumby_falconwing/
diff --git a/arch/arm/boards/canon-a1100/Makefile b/arch/arm/boards/canon-a1100/Makefile
new file mode 100644
index 0000000..b08c4a9
--- /dev/null
+++ b/arch/arm/boards/canon-a1100/Makefile
@@ -0,0 +1 @@
+lwl-y += lowlevel.o
diff --git a/arch/arm/boards/canon-a1100/env/bin/init b/arch/arm/boards/canon-a1100/env/bin/init
new file mode 100644
index 0000000..509643d
--- /dev/null
+++ b/arch/arm/boards/canon-a1100/env/bin/init
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+export PATH=/env/bin
+
+# use "direct print" led (blue)
+LED=0
+
+DELAY=300
+
+for i in 1 2 3; do
+	led $LED 1
+	msleep $DELAY
+	led $LED 0
+	msleep $DELAY
+done
diff --git a/arch/arm/boards/canon-a1100/env/bin/zup b/arch/arm/boards/canon-a1100/env/bin/zup
new file mode 100644
index 0000000..84bfd2f
--- /dev/null
+++ b/arch/arm/boards/canon-a1100/env/bin/zup
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+# on Canon PowerShot A1100 IS we can use 0x400000
+LOADADDR=0x400000
+IMGNAME=zbarebox.bin
+
+loady
+if [ -e $IMGNAME ]; then
+	memcpy -s $IMGNAME 0 $LOADADDR
+	go $LOADADDR
+fi
diff --git a/arch/arm/boards/canon-a1100/lowlevel.c b/arch/arm/boards/canon-a1100/lowlevel.c
new file mode 100644
index 0000000..bbae825
--- /dev/null
+++ b/arch/arm/boards/canon-a1100/lowlevel.c
@@ -0,0 +1,23 @@
+#include <common.h>
+#include <sizes.h>
+#include <asm/barebox-arm-head.h>
+#include <asm/barebox-arm.h>
+
+void __naked barebox_arm_reset_vector(void)
+{
+	arm_cpu_lowlevel_init();
+
+	/* FIXME: can we determine RAM size using CP15 register?
+	 *
+	 * see http://chdk.setepontos.com/index.php?topic=5980.90
+	 *
+	 * http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0363e/Bgbcdeca.html
+	 * 4.2.19. c6, MPU memory region programming registers
+	 *
+	 * But the 'cpuinfo' command says that the Protection
+	 * unit is disabled.
+	 * The Control Register value (mrc    p15, 0, %0, c0, c1, 4)
+	 * is 0x00051078.
+	 */
+	barebox_arm_entry(0x0, SZ_64M, 0);
+}
diff --git a/arch/arm/dts/canon-a1100.dts b/arch/arm/dts/canon-a1100.dts
new file mode 100644
index 0000000..dfa1d72
--- /dev/null
+++ b/arch/arm/dts/canon-a1100.dts
@@ -0,0 +1,26 @@
+/dts-v1/;
+
+/include/ "digic4.dtsi"
+
+/ {
+	model = "Canon PowerShot A1100 IS";
+	compatible = "canon,a1100";
+
+	memory {
+		reg = <0x00000000 0x04000000>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		direct_print {
+			label = "direct-print led (blue)";
+			gpios = <&gpio 51 0>;
+		};
+
+		auto_focus {
+			label = "auto-focus led (red)";
+			gpios = <&gpio 55 0>;
+		};
+	};
+};
diff --git a/arch/arm/mach-digic/Kconfig b/arch/arm/mach-digic/Kconfig
index 878a1a9..557cad4 100644
--- a/arch/arm/mach-digic/Kconfig
+++ b/arch/arm/mach-digic/Kconfig
@@ -3,8 +3,16 @@ if ARCH_DIGIC
 choice
 	prompt "camera type"
 
+config MACH_CANON_A1100
+	bool "Canon PowerShot A1100 IS"
+	select DIGIC_CSRC_TIMER
+
 endchoice
 
+config ARCH_TEXT_BASE
+	hex
+	default 0x00001900 if MACH_CANON_A1100
+
 config DIGIC_CSRC_TIMER
 	bool
 
-- 
1.8.4.rc3