[PATCH 1/7] at91: add test commamd to emulate bootrom boot

[Jean-Christophe PLAGNIOL-VILLARD]

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 arch/arm/mach-at91/Kconfig         |    6 +++
 arch/arm/mach-at91/Makefile        |    1 +
 arch/arm/mach-at91/boot_test_cmd.c |   99 ++++++++++++++++++++++++++++++++++++
 3 files changed, 106 insertions(+)
 create mode 100644 arch/arm/mach-at91/boot_test_cmd.c

diff --git a/arch/arm/mach-at91/Kconfig b/arch/arm/mach-at91/Kconfig
index fcba7fb..e703b3d 100644
--- a/arch/arm/mach-at91/Kconfig
+++ b/arch/arm/mach-at91/Kconfig
@@ -483,4 +483,10 @@ config CMD_AT91MUX
 	bool "at91mux dump command"
 	default y
 
+config CONFIG_CMD_AT91_BOOT_TEST
+	bool "at91_boot_test"
+	help
+	  allow to upload a boot binary to sram and execute it
+	  usefull to test bootstrap or barebox lowlevel init
+
 endif
diff --git a/arch/arm/mach-at91/Makefile b/arch/arm/mach-at91/Makefile
index 53b4dd8..4404d23 100644
--- a/arch/arm/mach-at91/Makefile
+++ b/arch/arm/mach-at91/Makefile
@@ -1,4 +1,5 @@
 obj-y += setup.o clock.o gpio.o
+obj-$(CONFIG_CMD_AT91_BOOT_TEST) += boot_test_cmd.o
 
 lowlevel_init-y = at91sam926x_lowlevel_init.o
 lowlevel_init-$(CONFIG_ARCH_AT91RM9200) = at91rm9200_lowlevel_init.o
diff --git a/arch/arm/mach-at91/boot_test_cmd.c b/arch/arm/mach-at91/boot_test_cmd.c
new file mode 100644
index 0000000..02e16fd
--- /dev/null
+++ b/arch/arm/mach-at91/boot_test_cmd.c
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
+ *
+ * Under GPLv2 only
+ */
+
+#include <common.h>
+#include <command.h>
+#include <libbb.h>
+#include <getopt.h>
+#include <fs.h>
+#include <fcntl.h>
+#include <malloc.h>
+#include <errno.h>
+
+static int do_at91_boot_test(int argc, char *argv[])
+{
+	int opt;
+	u32 *buf32;
+	void *buf;
+	u32 jump = 0;
+	int fd;
+	int ret = 1;
+	char *sram = "/dev/sram0";
+	u32 read_size, write_size;
+	u32 tmp = 0;
+
+	while ((opt = getopt(argc, argv, "j:s:")) > 0) {
+		switch (opt) {
+		case 'j':
+			jump = simple_strtoul(optarg, NULL, 0);
+			break;
+		case 's':
+			sram = optarg;
+			break;
+		default:
+			return COMMAND_ERROR_USAGE;
+		}
+	}
+
+	if (argc < optind + 1)
+		return COMMAND_ERROR_USAGE;
+
+	buf32 = buf = read_file(argv[optind], &read_size);
+	if (!buf)
+		return -EINVAL;
+
+	write_size = buf32[5];
+
+	printf("size of the size %d\n", read_size);
+	printf("size to load in sram %d\n", write_size);
+
+	if (write_size > read_size) {
+		printf("file smaller than requested sram loading size (%d < %d)\n", write_size, read_size);
+		goto err;
+	}
+
+	fd = open(sram, O_WRONLY);
+	if (fd < 0) {
+		printf("could not open %s: %s\n", sram, errno_str());
+		ret = fd;
+		goto err;
+	}
+
+	while(write_size) {
+		tmp = write(fd, buf, write_size);
+		if (tmp < 0) {
+			perror("write");
+			goto err_open;
+		}
+		buf += tmp;
+		write_size -= tmp;
+	}
+
+	shutdown_barebox();
+
+	__asm__ __volatile__(
+		"mov pc, %0\n"
+		:
+		: "r"(jump)
+		:);
+
+err_open:
+	close(fd);
+err:
+	free(buf);
+	return ret;
+}
+
+BAREBOX_CMD_HELP_START(at91_boot_test)
+BAREBOX_CMD_HELP_USAGE("at91_boot_test [-j <jump addr>] [-s <sram>] file\n")
+BAREBOX_CMD_HELP_SHORT("upload the binary to sram and jump as will do the romcode\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(at91_boot_test)
+	.cmd		= do_at91_boot_test,
+	.usage		= "upload the binary to sram and jump as will do the romcode",
+	BAREBOX_CMD_HELP(cmd_at91_boot_test_help)
+BAREBOX_CMD_END
-- 
1.7.10.4