firmware-utils: add HLK-RM04 tool

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 39238

2 files changed, 321 insertions, 0

From 4f740351484e88bcea3776578288b6ec400829c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Fri, 15 Jan 2021 16:01:04 +0100
Subject: [PATCH 2/3] dt-bindings: mtd: add binding from BCM4908 partitions
MIME-Version: 1.0
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BCM4908 uses fixed partitions layout but function of some partitions may
vary. Some devices use multiple firmware partitions and those should be
marked to let system discover their purpose.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 .../partitions/brcm,bcm4908-partitions.yaml   | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml

--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM4908 partitioning
+
+description: |
+  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
+  for regular booting, the other is treated as fallback.
+
+  This binding allows defining all fixed partitions and marking those containing
+  firmware. System can use that information e.g. for booting or flashing
+  purposes.
+
+maintainers:
+  - Rafał Miłecki <rafal@milecki.pl>
+
+properties:
+  compatible:
+    const: brcm,bcm4908-partitions
+
+  "#address-cells": true
+
+  "#size-cells": true
+
+patternProperties:
+  "@[0-9a-f]+$":
+    allOf:
+      - $ref: "partition.yaml#"
+      - properties:
+          compatible:
+            const: brcm,bcm4908-firmware
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+			break;
+ 
+		case 'o':
+			output_opt++;
+			if (output_opt > 1) {
+				fprintf(stderr, "%s: only one output file may be specified\n",
+				        argv[0]);
+				show_usage(argv[0]);
+			}
+			if (strcmp("-", optarg) != 0) {
+				output_filename = optarg;
+			}
+			break;
+ 
+		case '?':
+			exit(-1);
+ 
+		default:
+			abort();
+		}
+	}
+ 
+	if (decrypt_opt && encrypt_opt) {
+		fprintf(stderr, "%s: decrypt and encrypt may not be used together\n",
+		        argv[0]);
+		show_usage(argv[0]);
+	}
+ 
+	if (!decrypt_opt && !encrypt_opt) {
+		fprintf(stderr, "%s: neither decrypt or encrypt were specified\n",
+		        argv[0]);
+		show_usage(argv[0]);
+	}
+ 
+	temp_fd = fileno(tmpfile());
+	if (temp_fd < 0) {
+		fprintf(stderr, "Can't create temporary file\n");
+		exit(EXIT_FAILURE);
+	}
+ 
+	atexit(exit_cleanup);
+	DES_set_key_unchecked((const_DES_cblock *)DES_KEY, &schedule);
+ 
+	if (input_filename) {
+		input_fd = open(input_filename, O_RDONLY);
+		if (input_fd < 0) {
+			fprintf(stderr, "Can't open %s for reading: %s\n", input_filename,
+			        strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+		copy_file(input_fd, temp_fd);
+		close(input_fd);
+	}
+	else {
+		copy_file(STDIN_FILENO, temp_fd);
+	}
+ 
+	file_len = lseek(temp_fd, 0, SEEK_CUR);
+	if (file_len < 64) {
+		fprintf(stderr, "Not enough data\n");
+		exit(EXIT_FAILURE);
+	}
+ 
+	p = mmap(0, file_len, PROT_READ|PROT_WRITE, MAP_SHARED, temp_fd, 0);
+	if (p == MAP_FAILED) {
+		fprintf(stderr, "mmap failed: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}	
+ 
+	if (encrypt_opt) {
+		header = (image_header_t *)p;
+		off_t len = min(file_len,
+		                ntohl(header->ih_size) + sizeof(image_header_t));
+		if (ntohl(header->ih_magic) != IH_MAGIC) {
+			fprintf(stderr, "Header magic incorrect: "
+			        "expected 0x%08X, got 0x%08X\n",
+			        IH_MAGIC, ntohl(header->ih_magic));
+			munmap(p, file_len);
+			exit(EXIT_FAILURE);
+		}
+		encrypt(p, len);
+		munmap(p, file_len);
+		if (len != file_len) {
+			if (ftruncate(temp_fd, len) < 0) {
+				fprintf(stderr, "ftruncate failed: %s\n", strerror(errno));
+				exit(EXIT_FAILURE);
+			}
+		}		
+	}
+ 
+	if (decrypt_opt) {
+		off_t header_len = min(file_len, sizeof(image_header_t) + 3);
+		memcpy(buf, p, header_len);
+		decrypt(buf, header_len);
+		header = (image_header_t *)buf;
+		if (ntohl(header->ih_magic) != IH_MAGIC) {
+			fprintf(stderr, "Header magic incorrect: "
+			        "expected 0x%08X, got 0x%08X\n",
+			        IH_MAGIC, ntohl(header->ih_magic));
+			exit(EXIT_FAILURE);
+		}
+		decrypt(p, file_len);
+		munmap(p, file_len);
+	}
+ 
+	lseek(temp_fd, 0, SEEK_SET);
+	if (output_filename) {
+		output_fd = creat(output_filename, S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
+		if (output_fd < 0) {
+			fprintf(stderr, "Can't open %s for writing: %s\n",
+			        output_filename, strerror(errno));
+			exit(EXIT_FAILURE);
+		}
+		copy_file(temp_fd, output_fd);
+		close(output_fd);
+	}
+	else {
+		copy_file(temp_fd, STDOUT_FILENO);
+	}
+ 
+	exit(EXIT_SUCCESS);
+	return 0;
+}
+ 
+static void show_usage(const char *arg0)
+{
+	fprintf(stderr, "usage: %s -d|-e [-i FILE] [-o FILE]\n\n", arg0);
+	fprintf(stderr, "%-15s %s\n", "-d, --decrypt", "decrypt data");
+	fprintf(stderr, "%-15s %s\n", "-e, --encrypt", "encrypt data");
+	fprintf(stderr, "%-15s %s\n", "-i, --input", "intput file (defaults to stdin)");
+	fprintf(stderr, "%-15s %s\n", "-o, --output", "output file (defaults to stdout)");
+	exit(-1);
+}
+ 
+static void exit_cleanup(void)
+{
+	if (temp_fd >= 0) {
+		close(temp_fd);
+	}
+}
+ 
+static void copy_file(int src, int dst)
+{
+	char buf[4096];
+	ssize_t size;
+ 
+	while ((size = read(src, buf, 4096)) > 0) {
+        write(dst, buf, size);
+    }
+}
+ 
+static void encrypt(void *p, off_t len)
+{
+	DES_cblock *pblock;
+	int num_blocks;
+ 
+	num_blocks = len / 8;
+	pblock = (DES_cblock *) p;
+	while (num_blocks--) {
+		DES_ecb_encrypt(pblock, pblock, &schedule, DES_ENCRYPT);
+		pblock++;
+	}
+ 
+	num_blocks = (len - 3) / 8;
+	pblock = (DES_cblock *) (p + 3);
+	while (num_blocks--) {
+		DES_ecb_encrypt(pblock, pblock, &schedule, DES_ENCRYPT);
+		pblock++;
+	}
+}
+ 
+static void decrypt(void *p, off_t len)
+{
+	DES_cblock *pblock;
+	int num_blocks;
+ 
+	num_blocks = (len - 3) / 8;
+	pblock = (DES_cblock *) (p + 3);
+	while (num_blocks--) {
+		DES_ecb_encrypt(pblock, pblock, &schedule, DES_DECRYPT);
+		pblock++;
+	}
+ 
+	num_blocks = len / 8;
+	pblock = (DES_cblock *) p;
+	while (num_blocks--) {
+		DES_ecb_encrypt(pblock, pblock, &schedule, DES_DECRYPT);
+		pblock++;
+	}
+}

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