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-rw-r--r--bootloader.c167
1 files changed, 83 insertions, 84 deletions
diff --git a/bootloader.c b/bootloader.c
index 7da3f4ef6..1e66c3e26 100644
--- a/bootloader.c
+++ b/bootloader.c
@@ -23,103 +23,145 @@
#include <stdio.h>
#include <string.h>
-static int get_bootloader_message_mtd(struct bootloader_message *out, const Volume* v);
-static int set_bootloader_message_mtd(const struct bootloader_message *in, const Volume* v);
-static int get_bootloader_message_block(struct bootloader_message *out, const Volume* v);
-static int set_bootloader_message_block(const struct bootloader_message *in, const Volume* v);
+static const char *CACHE_NAME = "CACHE:";
+static const char *MISC_NAME = "MISC:";
+
+#ifdef LOG_VERBOSE
+static void dump_data(const char *data, int len) {
+ int pos;
+ for (pos = 0; pos < len; ) {
+ printf("%05x: %02x", pos, data[pos]);
+ for (++pos; pos < len && (pos % 24) != 0; ++pos) {
+ printf(" %02x", data[pos]);
+ }
+ printf("\n");
+ }
+}
+#endif
-int get_bootloader_message(struct bootloader_message *out) {
- Volume* v = volume_for_path("/misc");
- if (strcmp(v->fs_type, "mtd") == 0) {
- return get_bootloader_message_mtd(out, v);
- } else if (strcmp(v->fs_type, "block") == 0) {
- return get_bootloader_message_block(out, v);
+#ifdef USE_EXT4
+// Strictly speaking this doesn't have anything to do with ext4; we
+// really just mean "misc is an emmc partition". We should have a
+// more configurable way have describing partitions, filesystems, etc.
+
+static const char* MISC_PARTITION =
+ "/dev/block/platform/sdhci-tegra.3/by-name/misc";
+
+int get_bootloader_message(struct bootloader_message* out) {
+ FILE* f = fopen(MISC_PARTITION, "rb");
+ if (f == NULL) {
+ LOGE("Can't open %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
+ }
+ struct bootloader_message temp;
+ int count = fread(&temp, sizeof(temp), 1, f);
+ if (count != 1) {
+ LOGE("Failed reading %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
}
- LOGE("unknown misc partition fs_type \"%s\"\n", v->fs_type);
- return -1;
+ if (fclose(f) != 0) {
+ LOGE("Failed closing %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
+ }
+ memcpy(out, &temp, sizeof(temp));
+ return 0;
}
-int set_bootloader_message(const struct bootloader_message *in) {
- Volume* v = volume_for_path("/misc");
- if (strcmp(v->fs_type, "mtd") == 0) {
- return set_bootloader_message_mtd(in, v);
- } else if (strcmp(v->fs_type, "block") == 0) {
- return set_bootloader_message_block(in, v);
+int set_bootloader_message(const struct bootloader_message* in) {
+ FILE* f = fopen(MISC_PARTITION, "wb");
+ if (f == NULL) {
+ LOGE("Can't open %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
+ }
+ int count = fwrite(in, sizeof(*in), 1, f);
+ if (count != 1) {
+ LOGE("Failed writing %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
}
- LOGE("unknown misc partition fs_type \"%s\"\n", v->fs_type);
- return -1;
+ if (fclose(f) != 0) {
+ LOGE("Failed closing %s\n(%s)\n", MISC_PARTITION, strerror(errno));
+ return -1;
+ }
+ return 0;
}
-// ------------------------------
-// for misc partitions on MTD
-// ------------------------------
+#else // MTD partitions
static const int MISC_PAGES = 3; // number of pages to save
static const int MISC_COMMAND_PAGE = 1; // bootloader command is this page
-static int get_bootloader_message_mtd(struct bootloader_message *out,
- const Volume* v) {
+int get_bootloader_message(struct bootloader_message *out) {
size_t write_size;
- mtd_scan_partitions();
- const MtdPartition *part = mtd_find_partition_by_name(v->device);
+ const MtdPartition *part = get_root_mtd_partition(MISC_NAME);
if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", v->device);
+ LOGE("Can't find %s\n", MISC_NAME);
return -1;
}
MtdReadContext *read = mtd_read_partition(part);
if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
return -1;
}
const ssize_t size = write_size * MISC_PAGES;
char data[size];
ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", v->device, strerror(errno));
+ if (r != size) LOGE("Can't read %s\n(%s)\n", MISC_NAME, strerror(errno));
mtd_read_close(read);
if (r != size) return -1;
+#ifdef LOG_VERBOSE
+ printf("\n--- get_bootloader_message ---\n");
+ dump_data(data, size);
+ printf("\n");
+#endif
+
memcpy(out, &data[write_size * MISC_COMMAND_PAGE], sizeof(*out));
return 0;
}
-static int set_bootloader_message_mtd(const struct bootloader_message *in,
- const Volume* v) {
+
+int set_bootloader_message(const struct bootloader_message *in) {
size_t write_size;
- mtd_scan_partitions();
- const MtdPartition *part = mtd_find_partition_by_name(v->device);
+ const MtdPartition *part = get_root_mtd_partition(MISC_NAME);
if (part == NULL || mtd_partition_info(part, NULL, NULL, &write_size)) {
- LOGE("Can't find %s\n", v->device);
+ LOGE("Can't find %s\n", MISC_NAME);
return -1;
}
MtdReadContext *read = mtd_read_partition(part);
if (read == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
return -1;
}
ssize_t size = write_size * MISC_PAGES;
char data[size];
ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("Can't read %s\n(%s)\n", v->device, strerror(errno));
+ if (r != size) LOGE("Can't read %s\n(%s)\n", MISC_NAME, strerror(errno));
mtd_read_close(read);
if (r != size) return -1;
memcpy(&data[write_size * MISC_COMMAND_PAGE], in, sizeof(*in));
+#ifdef LOG_VERBOSE
+ printf("\n--- set_bootloader_message ---\n");
+ dump_data(data, size);
+ printf("\n");
+#endif
+
MtdWriteContext *write = mtd_write_partition(part);
if (write == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't open %s\n(%s)\n", MISC_NAME, strerror(errno));
return -1;
}
if (mtd_write_data(write, data, size) != size) {
- LOGE("Can't write %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't write %s\n(%s)\n", MISC_NAME, strerror(errno));
mtd_write_close(write);
return -1;
}
if (mtd_write_close(write)) {
- LOGE("Can't finish %s\n(%s)\n", v->device, strerror(errno));
+ LOGE("Can't finish %s\n(%s)\n", MISC_NAME, strerror(errno));
return -1;
}
@@ -127,47 +169,4 @@ static int set_bootloader_message_mtd(const struct bootloader_message *in,
return 0;
}
-
-// ------------------------------------
-// for misc partitions on block devices
-// ------------------------------------
-
-static int get_bootloader_message_block(struct bootloader_message *out,
- const Volume* v) {
- FILE* f = fopen(v->device, "rb");
- if (f == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- struct bootloader_message temp;
- int count = fread(&temp, sizeof(temp), 1, f);
- if (count != 1) {
- LOGE("Failed reading %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- if (fclose(f) != 0) {
- LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- memcpy(out, &temp, sizeof(temp));
- return 0;
-}
-
-static int set_bootloader_message_block(const struct bootloader_message *in,
- const Volume* v) {
- FILE* f = fopen(v->device, "wb");
- if (f == NULL) {
- LOGE("Can't open %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- int count = fwrite(in, sizeof(*in), 1, f);
- if (count != 1) {
- LOGE("Failed writing %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- if (fclose(f) != 0) {
- LOGE("Failed closing %s\n(%s)\n", v->device, strerror(errno));
- return -1;
- }
- return 0;
-}
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 18:33:08 +0100