Support dual bootloader (#27)

* Support dual bootloader

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Make ova running

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* fix uboot

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Update supervisor

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

* Support all rpi

Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>

buildroot-external/patches/barebox/0003-drivers-of-bugfix-partition-fixups.patch

@@ -1,34 +0,0 @@
-From cf05dfaa34d8502041aa2354f3b8c97ca4d250c9 Mon Sep 17 00:00:00 2001
-From: Pascal Vizeli <pvizeli@syshack.ch>
-Date: Thu, 7 Jun 2018 17:36:00 +0000
-Subject: [PATCH 1/1] drivers: of: bugfix partition fixups
-
-If we load a new device tree for linux kernel with a diferent layout,
-the fixup of partition going into endless loop. Exactly the of_find_property
-function will never come back on a invalid device_node.
-
-My patch check, if the device will exists on device tree before we run the
-fixup.
-
-Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>
----
- drivers/of/partition.c | 3 +++
- 1 file changed, 3 insertions(+)
-
-diff --git a/drivers/of/partition.c b/drivers/of/partition.c
-index aa6e601b7..17e420964 100644
---- a/drivers/of/partition.c
-+++ b/drivers/of/partition.c
-@@ -140,6 +140,9 @@ static int of_partition_fixup(struct device_node *root, void *ctx)
- 	if (!cdev->device_node)
- 		return -EINVAL;
- 
-+	if (!of_find_node_by_path(cdev->device_node->full_name))
-+		return -EINVAL;
-+
- 	list_for_each_entry(partcdev, &cdev->partitions, partition_entry) {
- 		if (partcdev->flags & DEVFS_PARTITION_FROM_TABLE)
- 			continue;
--- 
-2.17.1
-

buildroot-external/patches/barebox/0004-command-add-fix_bootargs.patch

@@ -1,161 +0,0 @@
-From 5facf78a36c30c47849c338bf685f69849173f87 Mon Sep 17 00:00:00 2001
-From: Pascal Vizeli <pvizeli@syshack.ch>
-Date: Fri, 8 Jun 2018 20:45:32 +0000
-Subject: [PATCH 1/1] command: add fix_bootargs
-
-Signed-off-by: Pascal Vizeli <pvizeli@syshack.ch>
----
- commands/Kconfig        |  13 +++++
- commands/Makefile       |   1 +
- commands/fix_bootargs.c | 105 ++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 119 insertions(+)
- create mode 100644 commands/fix_bootargs.c
-
-diff --git a/commands/Kconfig b/commands/Kconfig
-index 951a86963..4cc55a358 100644
---- a/commands/Kconfig
-+++ b/commands/Kconfig
-@@ -2137,6 +2137,19 @@ config CMD_SEED
- 	help
- 	  Seed the pseudo random number generator (PRNG)
- 
-+config CMD_FIX_BOOTARGS
-+	tristate
-+        select GLOBALVAR
-+        select OFTREE
-+        prompt "fix_bootargs"
-+        help
-+          Read bootargs from device tree and set to 'linux.bootargs.chosen'
-+
-+          Usage: fix_bootargs [-f DTB]
-+
-+          Options:
-+                -f DTB     Read it from a dtb file.
-+
- # end Miscellaneous commands
- endmenu
- 
-diff --git a/commands/Makefile b/commands/Makefile
-index eb4796389..fafa8b145 100644
---- a/commands/Makefile
-+++ b/commands/Makefile
-@@ -122,4 +122,5 @@ obj-$(CONFIG_CMD_SPD_DECODE)	+= spd_decode.o
- obj-$(CONFIG_CMD_MMC_EXTCSD)	+= mmc_extcsd.o
- obj-$(CONFIG_CMD_NAND_BITFLIP)	+= nand-bitflip.o
- obj-$(CONFIG_CMD_SEED)		+= seed.o
-+obj-$(CONFIG_CMD_FIX_BOOTARGS)	+= fix_bootargs.o
- obj-$(CONFIG_CMD_IP_ROUTE_GET)  += ip-route-get.o
-diff --git a/commands/fix_bootargs.c b/commands/fix_bootargs.c
-new file mode 100644
-index 000000000..f58a4ab1d
---- /dev/null
-+++ b/commands/fix_bootargs.c
-@@ -0,0 +1,105 @@
-+/*
-+ * of_dump.c - dump devicetrees to the console
-+ *
-+ * Copyright (c) 2018 Pascal Vizeli <pvizeli@syshack.ch>, Hass.io
-+ *
-+ * 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 <libfile.h>
-+#include <of.h>
-+#include <command.h>
-+#include <malloc.h>
-+#include <linux/ctype.h>
-+#include <errno.h>
-+#include <globalvar.h>
-+#include <getopt.h>
-+#include <linux/err.h>
-+
-+static int do_fix_bootargs(int argc, char *argv[])
-+{
-+	int opt;
-+	int ret = 0;
-+	struct device_node *root = NULL, *node = NULL, *of_free = NULL;
-+	struct property *prop = NULL;
-+	char *dtbfile = NULL;
-+	size_t size;
-+
-+	while ((opt = getopt(argc, argv, "f")) > 0) {
-+		switch (opt) {
-+		case 'f':
-+			dtbfile = optarg;
-+			break;
-+		default:
-+			return COMMAND_ERROR_USAGE;
-+		}
-+	}
-+
-+	if (dtbfile) {
-+		void *fdt;
-+
-+		fdt = read_file(dtbfile, &size);
-+		if (!fdt) {
-+			printf("unable to read %s: %s\n", dtbfile, strerror(errno));
-+			return -errno;
-+		}
-+
-+		root = of_unflatten_dtb(fdt);
-+
-+		free(fdt);
-+
-+		if (IS_ERR(root)) {
-+			ret = PTR_ERR(root);
-+			goto end;
-+		}
-+
-+		of_free = root;
-+	} else {
-+		root = of_get_root_node();
-+	}
-+
-+	node = of_find_node_by_path_or_alias(root, "/chosen");
-+	if (!node) {
-+		printf("Cannot find chosen\n");
-+		ret = -ENOENT;
-+		goto end;
-+	}
-+
-+	prop = of_find_property(node, "bootargs", NULL);
-+	if (!prop) {
-+		printf("Cannot find bootargs\n");
-+		ret = -ENOENT;
-+		goto end;
-+	}
-+
-+	ret = globalvar_add_simple("linux.bootargs.chosen", prop->value);
-+
-+end:
-+	if (of_free)
-+		of_delete_node(of_free);
-+	return ret;
-+}
-+
-+BAREBOX_CMD_HELP_START(fix_bootargs)
-+BAREBOX_CMD_HELP_TEXT("Options:")
-+BAREBOX_CMD_HELP_OPT  ("-f dtb",  "work on dtb instead of internal devicetree\n")
-+BAREBOX_CMD_HELP_END
-+
-+BAREBOX_CMD_START(fix_bootargs)
-+	.cmd		= do_fix_bootargs,
-+	BAREBOX_CMD_DESC("dump devicetree nodes")
-+	BAREBOX_CMD_OPTS("[-f DTB]")
-+	BAREBOX_CMD_HELP(cmd_fix_bootargs_help)
-+BAREBOX_CMD_END
--- 
-2.17.1
-