Add a Firmware programming framework

This framework handles a list of registered Firmware programming handlers
to unify a firmware programming interface by hiding the details how
to program a specific Firmware in its handler. This is created with FPGAs
in mind but should be usable for other devices aswell.
A user has two possibilities to load a firmware. A device file is create
under /dev/ which can be used to copy a firmware to. Additionally a
firmwareload command is introduced which can list the registered firmware
handlers and also to upload a firmware.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

3 files changed, 76 insertions, 0 deletions

diff --git a/commands/Kconfig b/commands/Kconfig
index 3a49bafd27..0b1939ef57 100644
--- a/commands/Kconfig
+++ b/commands/Kconfig
@@ -1905,6 +1905,15 @@ config CMD_BAREBOX_UPDATE
 		  -y		autom. use 'yes' when asking confirmations
 		  -f LEVEL	set force level
 
+config CMD_FIRMWARELOAD
+	bool
+	select FIRMWARE
+	prompt "firmwareload"
+	help
+	  Provides the "firmwareload" command which deals with devices which need
+	  firmware to work. It is also used to upload firmware to FPGA devices.
+
+
 config CMD_LINUX_EXEC
 	bool "linux exec"
 	depends on LINUX
diff --git a/commands/Makefile b/commands/Makefile
index 52b6137c01..d6a6f822a8 100644
--- a/commands/Makefile
+++ b/commands/Makefile
@@ -103,3 +103,4 @@ obj-$(CONFIG_CMD_LSPCI)		+= lspci.o
 obj-$(CONFIG_CMD_IMD)		+= imd.o
 obj-$(CONFIG_CMD_HWCLOCK)	+= hwclock.o
 obj-$(CONFIG_CMD_USBGADGET)	+= usbgadget.o
+obj-$(CONFIG_CMD_FIRMWARELOAD)	+= firmwareload.o
diff --git a/commands/firmwareload.c b/commands/firmwareload.c
new file mode 100644
index 0000000000..a2596951a7
--- /dev/null
+++ b/commands/firmwareload.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2013 Juergen Beisert <kernel@pengutronix.de>, Pengutronix
+ *
+ * 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 <command.h>
+#include <getopt.h>
+#include <firmware.h>
+
+static int do_firmwareload(int argc, char *argv[])
+{
+	int ret, opt;
+	const char *name = NULL, *firmware;
+	struct firmware_mgr *mgr;
+
+	while ((opt = getopt(argc, argv, "t:l")) > 0) {
+		switch (opt) {
+		case 't':
+			name = optarg;
+			break;
+		case 'l':
+			firmwaremgr_list_handlers();
+			return 0;
+		default:
+			return COMMAND_ERROR_USAGE;
+		}
+	}
+
+	if (!(argc - optind))
+		return COMMAND_ERROR_USAGE;
+
+	firmware = argv[optind];
+
+	mgr = firmwaremgr_find(name);
+
+	if (!mgr) {
+		printf("No such programming handler found: %s\n",
+				name ? name : "default");
+		return 1;
+	}
+
+	ret = firmwaremgr_load_file(mgr, firmware);
+
+	return ret;
+}
+
+BAREBOX_CMD_HELP_START(firmwareload)
+BAREBOX_CMD_HELP_TEXT("Options:")
+BAREBOX_CMD_HELP_OPT("-t <target>", "define the firmware handler by name\n")
+BAREBOX_CMD_HELP_OPT("-l\t", "list devices capable of firmware loading\n")
+BAREBOX_CMD_HELP_END
+
+BAREBOX_CMD_START(firmwareload)
+	.cmd = do_firmwareload,
+	BAREBOX_CMD_DESC("Program a firmware file into a device")
+	BAREBOX_CMD_HELP(cmd_firmwareload_help)
+BAREBOX_CMD_END