MA-7633-1 [Android-SD-EMMC] enable BCB partition in android

1 Add some APIs to operate BCB/command.
2 Add action to check the command of BCB.
  It can cover the case that power down when do factory-reset\ota in recovery mode.

Signed-off-by: zhang sanshan <b51434@freescale.com>

7 files changed, 353 insertions, 212 deletions

diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 8e9732a..ad9804a 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_DFU_FUNCTION) += f_dfu.o
 obj-$(CONFIG_USB_GADGET_MASS_STORAGE) += f_mass_storage.o
 obj-$(CONFIG_CMD_FASTBOOT) += f_fastboot.o
 obj-$(CONFIG_BRILLO_SUPPORT) += bootctrl.o
+obj-$(CONFIG_BCB_SUPPORT) += command.o bcb.o
 endif
 ifdef CONFIG_USB_ETHER
 obj-y += ether.o
diff --git a/drivers/usb/gadget/bcb.c b/drivers/usb/gadget/bcb.c
new file mode 100644
index 0000000..f6ccf91
--- /dev/null
+++ b/drivers/usb/gadget/bcb.c
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include "bcb.h"
+#include "bootctrl.h"
+#include <linux/stat.h>
+#include <linux/types.h>
+#include <common.h>
+#include <g_dnl.h>
+static unsigned int g_mmc_id;
+void set_mmc_id(unsigned int id)
+{
+	g_mmc_id = id;
+}
+#define ALIGN_BYTES 64 /*armv7 cache line need 64 bytes aligned */
+static ulong get_block_size(char *ifname, int dev, int part)
+{
+	block_dev_desc_t *dev_desc = NULL;
+	disk_partition_t part_info;
+
+	dev_desc = get_dev(ifname, dev);
+	if (dev_desc == NULL) {
+		printf("Block device %s %d not supported\n", ifname, dev);
+		return 0;
+	}
+
+	if (get_partition_info(dev_desc, part, &part_info)) {
+		printf("Cannot find partition %d\n", part);
+		return 0;
+	}
+
+	return part_info.blksz;
+}
+
+static int do_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	char *ep;
+	block_dev_desc_t *dev_desc = NULL;
+	int dev;
+	int part = 0;
+	disk_partition_t part_info;
+	ulong offset = 0u;
+	ulong limit = 0u;
+	void *addr;
+	uint blk;
+	uint cnt;
+
+	if (argc != 6) {
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	dev = (int)simple_strtoul(argv[2], &ep, 16);
+	if (*ep) {
+		if (*ep != ':') {
+			printf("Invalid block device %s\n", argv[2]);
+			return 1;
+		}
+		part = (int)simple_strtoul(++ep, NULL, 16);
+	}
+
+	dev_desc = get_dev(argv[1], dev);
+	if (dev_desc == NULL) {
+		printf("Block device %s %d not supported\n", argv[1], dev);
+		return 1;
+	}
+
+	addr = (void *)simple_strtoul(argv[3], NULL, 16);
+	blk = simple_strtoul(argv[4], NULL, 16);
+	cnt = simple_strtoul(argv[5], NULL, 16);
+
+	if (part != 0) {
+		if (get_partition_info(dev_desc, part, &part_info)) {
+			printf("Cannot find partition %d\n", part);
+			return 1;
+		}
+		offset = part_info.start;
+		limit = part_info.size;
+	} else {
+		/* Largest address not available in block_dev_desc_t. */
+		limit = ~0;
+	}
+
+	if (cnt + blk > limit) {
+		printf("Write out of range\n");
+		return 1;
+	}
+
+	if (dev_desc->block_write(dev, offset + blk, cnt, addr) < 0) {
+		printf("Error writing blocks\n");
+		return 1;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	write,	6,	0,	do_write,
+	"write binary data to a partition",
+	"<interface> <dev[:part]> addr blk# cnt"
+);
+
+int rw_block(bool bread, char **ppblock,
+		uint *pblksize, char *pblock_write, uint offset, uint size)
+{
+	int ret;
+	char *argv[6];
+	char addr_str[20];
+	char cnt_str[8];
+	char devpart_str[8];
+	char block_begin_str[8];
+	ulong blk_size = 0;
+	uint blk_begin = 0;
+	uint blk_end = 0;
+	uint block_cnt = 0;
+	char *p_block = NULL;
+
+	if (bread && ((ppblock == NULL) || (pblksize == NULL)))
+		return -1;
+
+	if (!bread && (pblock_write == NULL))
+		return -1;
+
+	blk_size = get_block_size("mmc", g_mmc_id,
+		CONFIG_ANDROID_MISC_PARTITION_MMC);
+	if (blk_size == 0) {
+		printf("rw_block, get_block_size return 0\n");
+		return -1;
+	}
+
+	blk_begin = offset/blk_size;
+	blk_end = (offset + size)/blk_size;
+	block_cnt = 1 + (blk_end - blk_begin);
+
+
+	sprintf(devpart_str, "0x%x:0x%x", g_mmc_id,
+		CONFIG_ANDROID_MISC_PARTITION_MMC);
+	sprintf(block_begin_str, "0x%x", blk_begin);
+	sprintf(cnt_str, "0x%x", block_cnt);
+
+	argv[0] = "rw"; /* not care */
+	argv[1] = "mmc";
+	argv[2] = devpart_str;
+	argv[3] = addr_str;
+	argv[4] = block_begin_str;
+	argv[5] = cnt_str;
+
+	if (bread) {
+		p_block = (char *)memalign(ALIGN_BYTES, blk_size * block_cnt);
+		if (NULL == p_block) {
+			printf("rw_block, memalign %d bytes failed\n",
+			(int)(blk_size * block_cnt));
+			return -1;
+		}
+		sprintf(addr_str, "0x%x", (unsigned int)p_block);
+		ret = do_raw_read(NULL, 0, 6, argv);
+		if (ret) {
+			free(p_block);
+			printf("do_raw_read failed, ret %d\n", ret);
+			return -1;
+		}
+
+		*ppblock = p_block;
+		*pblksize = (uint)blk_size;
+	} else {
+		sprintf(addr_str, "0x%x", (unsigned int)pblock_write);
+		ret = do_write(NULL, 0, 6, argv);
+		if (ret) {
+			printf("do_write failed, ret %d\n", ret);
+			return -1;
+		}
+	}
+	return 0;
+}
diff --git a/drivers/usb/gadget/bcb.h b/drivers/usb/gadget/bcb.h
new file mode 100644
index 0000000..2512a7f
--- /dev/null
+++ b/drivers/usb/gadget/bcb.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#ifndef BCB_H
+#define BCB_H
+#include <linux/types.h>
+#include <linux/stat.h>
+/* keep same as bootable/recovery/bootloader.h */
+struct bootloader_message {
+	char command[32];
+	char status[32];
+	char recovery[768];
+
+	/* The 'recovery' field used to be 1024 bytes.  It has only ever
+	been used to store the recovery command line, so 768 bytes
+	should be plenty.  We carve off the last 256 bytes to store the
+	stage string (for multistage packages) and possible future
+	expansion. */
+	char stage[32];
+	char slot_suffix[32];
+	char reserved[192];
+};
+
+/* start from bootloader_message.slot_suffix[BOOTCTRL_IDX] */
+#define BOOTCTRL_IDX                            0
+#define MISC_COMMAND_IDX                        0
+#define BOOTCTRL_OFFSET         \
+	(u32)(&(((struct bootloader_message *)0)->slot_suffix[BOOTCTRL_IDX]))
+#define MISC_COMMAND \
+	(u32)(&(((struct bootloader_message *)0)->command[MISC_COMMAND_IDX]))
+int rw_block(bool bread, char **ppblock,
+		uint *pblksize, char *pblock_write, uint offset, uint size);
+
+void set_mmc_id(unsigned int id);
+#endif
diff --git a/drivers/usb/gadget/bootctrl.c b/drivers/usb/gadget/bootctrl.c
index 653c00c..21a7aee 100644
--- a/drivers/usb/gadget/bootctrl.c
+++ b/drivers/usb/gadget/bootctrl.c
@@ -10,46 +10,6 @@
 #include "bootctrl.h"
 #include <linux/types.h>
 #include <linux/stat.h>
-
-#define SLOT_NUM (unsigned int)2
-
-/* keep same as bootable/recovery/bootloader.h */
-struct bootloader_message {
-	char command[32];
-	char status[32];
-	char recovery[768];
-
-	/* The 'recovery' field used to be 1024 bytes.	It has only ever
-	 been used to store the recovery command line, so 768 bytes
-	 should be plenty.  We carve off the last 256 bytes to store the
-	 stage string (for multistage packages) and possible future
-	 expansion. */
-	char stage[32];
-	char slot_suffix[32];
-	char reserved[192];
-};
-
-/* start from bootloader_message.slot_suffix[BOOTCTRL_IDX] */
-#define BOOTCTRL_IDX				0
-#define BOOTCTRL_OFFSET		\
-	(u32)(&(((struct bootloader_message *)0)->slot_suffix[BOOTCTRL_IDX]))
-#define CRC_DATA_OFFSET		\
-	(uint32_t)(&(((struct boot_ctl *)0)->a_slot_meta[0]))
-
-struct slot_meta {
-	u8 bootsuc:1;
-	u8 tryremain:3;
-	u8 priority:4;
-};
-
-struct boot_ctl {
-	char magic[4]; /* "\0FSL" */
-	u32 crc;
-	struct slot_meta a_slot_meta[SLOT_NUM];
-	u8 recovery_tryremain;
-};
-
-static unsigned int g_mmc_id;
 static unsigned int g_slot_selected;
 static const char *g_slot_suffix[SLOT_NUM] = {"_a", "_b"};
 
@@ -62,10 +22,6 @@ static int strcmp_l1(const char *s1, const char *s2)
 	return strncmp(s1, s2, strlen(s1));
 }
 
-void set_mmc_id(unsigned int id)
-{
-	g_mmc_id = id;
-}
 
 static void dump_slotmeta(struct boot_ctl *ptbootctl)
 {
@@ -112,98 +68,7 @@ static unsigned int slot_find(struct boot_ctl *ptbootctl)
 	return slot;
 }
 
-static ulong get_block_size(char *ifname, int dev, int part)
-{
-	block_dev_desc_t *dev_desc = NULL;
-	disk_partition_t part_info;
-
-	dev_desc = get_dev(ifname, dev);
-	if (dev_desc == NULL) {
-		printf("Block device %s %d not supported\n", ifname, dev);
-		return 0;
-	}
-
-	if (get_partition_info(dev_desc, part, &part_info)) {
-		printf("Cannot find partition %d\n", part);
-		return 0;
-	}
-
-	return part_info.blksz;
-}
-
-#define ALIGN_BYTES 64 /*armv7 cache line need 64 bytes aligned */
-static int rw_block(bool bread, char **ppblock,
-					uint *pblksize, char *pblock_write)
-{
-	int ret;
-	char *argv[6];
-	char addr_str[20];
-	char cnt_str[8];
-	char devpart_str[8];
-	char block_begin_str[8];
-	ulong blk_size = 0;
-	uint blk_begin = 0;
-	uint blk_end = 0;
-	uint block_cnt = 0;
-	char *p_block = NULL;
 
-	if (bread && ((ppblock == NULL) || (pblksize == NULL)))
-		return -1;
-
-	if (!bread && (pblock_write == NULL))
-		return -1;
-
-	blk_size = get_block_size("mmc", g_mmc_id,
-			CONFIG_ANDROID_MISC_PARTITION_MMC);
-	if (blk_size == 0) {
-		printf("rw_block, get_block_size return 0\n");
-		return -1;
-	}
-
-	blk_begin = BOOTCTRL_OFFSET/blk_size;
-	blk_end = (BOOTCTRL_OFFSET + sizeof(struct boot_ctl) - 1)/blk_size;
-	block_cnt = 1 + (blk_end - blk_begin);
-
-	sprintf(devpart_str, "0x%x:0x%x", g_mmc_id,
-		CONFIG_ANDROID_MISC_PARTITION_MMC);
-	sprintf(block_begin_str, "0x%x", blk_begin);
-	sprintf(cnt_str, "0x%x", block_cnt);
-
-	argv[0] = "rw"; /* not care */
-	argv[1] = "mmc";
-	argv[2] = devpart_str;
-	argv[3] = addr_str;
-	argv[4] = block_begin_str;
-	argv[5] = cnt_str;
-
-	if (bread) {
-		p_block = (char *)memalign(ALIGN_BYTES, blk_size * block_cnt);
-		if (NULL == p_block) {
-			printf("rw_block, memalign %d bytes failed\n",
-			       (int)(blk_size * block_cnt));
-			return -1;
-		}
-		sprintf(addr_str, "0x%x", (unsigned int)p_block);
-		ret = do_raw_read(NULL, 0, 6, argv);
-		if (ret) {
-			free(p_block);
-			printf("do_raw_read failed, ret %d\n", ret);
-			return -1;
-		}
-
-		*ppblock = p_block;
-		*pblksize = (uint)blk_size;
-	} else {
-		sprintf(addr_str, "0x%x", (unsigned int)pblock_write);
-		ret = do_write(NULL, 0, 6, argv);
-		if (ret) {
-			printf("do_write failed, ret %d\n", ret);
-			return -1;
-		}
-	}
-
-	return 0;
-}
 
 static int read_bootctl(struct boot_ctl *ptbootctl)
 {
@@ -216,8 +81,8 @@ static int read_bootctl(struct boot_ctl *ptbootctl)
 
 	if (ptbootctl == NULL)
 		return -1;
-
-	ret = rw_block(true, &p_block, &blk_size, NULL);
+	ret = rw_block(true, &p_block, &blk_size, NULL,
+			BOOTCTRL_OFFSET, sizeof(struct boot_ctl));
 	if (ret) {
 		printf("read_bootctl, rw_block read failed\n");
 		return -1;
@@ -264,22 +129,22 @@ static int write_bootctl(struct boot_ctl *ptbootctl)
 	ptbootctl->crc = crc32(0, (unsigned char *)ptbootctl + CRC_DATA_OFFSET,
 		sizeof(struct boot_ctl) - CRC_DATA_OFFSET);
 
-	ret = rw_block(true, &p_block, &blk_size, NULL);
+	ret = rw_block(true, &p_block, &blk_size, NULL,
+				BOOTCTRL_OFFSET, sizeof(struct boot_ctl));
 	if (ret) {
 		printf("write_bootctl, rw_block read failed\n");
 		return -1;
 	}
-
 	offset_in_block = BOOTCTRL_OFFSET%blk_size;
 	memcpy(p_block + offset_in_block, ptbootctl, sizeof(struct boot_ctl));
 
-	ret = rw_block(false, NULL, NULL, p_block);
+	ret = rw_block(false, NULL, NULL, p_block,
+			BOOTCTRL_OFFSET, sizeof(struct boot_ctl));
 	if (ret) {
 		free(p_block);
 		printf("write_bootctl, rw_block write failed\n");
 		return -1;
 	}
-
 	free(p_block);
 	return 0;
 }
@@ -479,70 +344,3 @@ void cb_set_active(struct usb_ep *ep, struct usb_request *req)
 	return;
 }
 
-static int do_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
-	char *ep;
-	block_dev_desc_t *dev_desc = NULL;
-	int dev;
-	int part = 0;
-	disk_partition_t part_info;
-	ulong offset = 0u;
-	ulong limit = 0u;
-	void *addr;
-	uint blk;
-	uint cnt;
-
-	if (argc != 6) {
-		cmd_usage(cmdtp);
-		return 1;
-	}
-
-	dev = (int)simple_strtoul(argv[2], &ep, 16);
-	if (*ep) {
-		if (*ep != ':') {
-			printf("Invalid block device %s\n", argv[2]);
-			return 1;
-		}
-		part = (int)simple_strtoul(++ep, NULL, 16);
-	}
-
-	dev_desc = get_dev(argv[1], dev);
-	if (dev_desc == NULL) {
-		printf("Block device %s %d not supported\n", argv[1], dev);
-		return 1;
-	}
-
-	addr = (void *)simple_strtoul(argv[3], NULL, 16);
-	blk = simple_strtoul(argv[4], NULL, 16);
-	cnt = simple_strtoul(argv[5], NULL, 16);
-
-	if (part != 0) {
-		if (get_partition_info(dev_desc, part, &part_info)) {
-			printf("Cannot find partition %d\n", part);
-			return 1;
-		}
-		offset = part_info.start;
-		limit = part_info.size;
-	} else {
-		/* Largest address not available in block_dev_desc_t. */
-		limit = ~0;
-	}
-
-	if (cnt + blk > limit) {
-		printf("Write out of range\n");
-		return 1;
-	}
-
-	if (dev_desc->block_write(dev, offset + blk, cnt, addr) < 0) {
-		printf("Error writing blocks\n");
-		return 1;
-	}
-
-	return 0;
-}
-
-U_BOOT_CMD(
-	write,	6,	0,	do_write,
-	"write binary data to a partition",
-	"<interface> <dev[:part]> addr blk# cnt"
-);
diff --git a/drivers/usb/gadget/bootctrl.h b/drivers/usb/gadget/bootctrl.h
index 2153103..7712f75 100644
--- a/drivers/usb/gadget/bootctrl.h
+++ b/drivers/usb/gadget/bootctrl.h
@@ -7,11 +7,31 @@
 #ifndef BOOTCTRL_H
 #define BOOTCTRL_H
 
-void set_mmc_id(unsigned int id);
+#include <common.h>
+#include <g_dnl.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include "bcb.h"
+
+#define SLOT_NUM (unsigned int)2
+#define CRC_DATA_OFFSET		\
+	(uint32_t)(&(((struct boot_ctl *)0)->a_slot_meta[0]))
+
+struct slot_meta {
+	u8 bootsuc:1;
+	u8 tryremain:3;
+	u8 priority:4;
+};
+
+struct boot_ctl {
+	char magic[4]; /* "\0FSL" */
+	u32 crc;
+	struct slot_meta a_slot_meta[SLOT_NUM];
+	u8 recovery_tryremain;
+};
 char *select_slot(void);
 bool is_sotvar(char *cmd);
 void get_slotvar(char *cmd, char *response, size_t chars_left);
 void cb_set_active(struct usb_ep *ep, struct usb_request *req);
 const char *get_slot_suffix(void);
-
 #endif
diff --git a/drivers/usb/gadget/command.c b/drivers/usb/gadget/command.c
new file mode 100644
index 0000000..3af3fcf
--- /dev/null
+++ b/drivers/usb/gadget/command.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2015-2016 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <g_dnl.h>
+#include "bcb.h"
+
+#ifndef CONFIG_FASTBOOT_STORAGE_NAND
+static char command[32];
+static int read_command(char *command)
+{
+	int ret = 0;
+	char *p_block = NULL;
+	uint offset_in_block = 0;
+	uint blk_size = 0;
+
+	if (command == NULL)
+		return -1;
+
+	ret = rw_block(true, &p_block, &blk_size, NULL, MISC_COMMAND, 32);
+	if (ret) {
+		printf("read_bootctl, rw_block read failed\n");
+		return -1;
+	}
+
+	offset_in_block = MISC_COMMAND%blk_size;
+	memcpy(command, p_block + offset_in_block, 32);
+
+	return 0;
+}
+static int write_command(char *bcb_command)
+{
+	int ret = 0;
+	char *p_block = NULL;
+	uint offset_in_block = 0;
+	uint blk_size = 0;
+
+	if (bcb_command == NULL)
+		return -1;
+
+
+	ret = rw_block(true, &p_block, &blk_size, NULL,  MISC_COMMAND, 32);
+	if (ret) {
+		printf("write_bootctl, rw_block read failed\n");
+		return -1;
+	}
+
+	offset_in_block = MISC_COMMAND%blk_size;
+	memcpy(p_block + offset_in_block, bcb_command, 32);
+
+	ret = rw_block(false, NULL, NULL, p_block, MISC_COMMAND, 32);
+	if (ret) {
+		free(p_block);
+		printf("write_bootctl, rw_block write failed\n");
+		return -1;
+	}
+
+	free(p_block);
+	return 0;
+}
+
+int recovery_check_and_clean_command(void)
+{
+	int ret;
+	ret = read_command(command);
+	if (ret < 0) {
+		printf("read command failed\n");
+		return 0;
+	}
+	if (!strcmp(command, "boot-recovery")) {
+		memset(command, 0, 32);
+		write_command(command);
+		return 1;
+	}
+	return 0;
+}
+int fastboot_check_and_clean_command(void)
+{
+	int ret;
+	ret = read_command(command);
+	if (ret < 0) {
+		printf("read command failed\n");
+		return 0;
+	}
+	if (!strcmp(command, "boot-bootloader")) {
+		memset(command, 0, 32);
+		write_command(command);
+		return 1;
+	}
+
+	return 0;
+}
+#else
+int recovery_check_and_clean_command(void)
+{
+	return 0;
+}
+int fastboot_check_and_clean_command(void)
+{
+	return 0;
+}
+#endif
diff --git a/drivers/usb/gadget/f_fastboot.c b/drivers/usb/gadget/f_fastboot.c
index fb2d11c..d641ebd 100644
--- a/drivers/usb/gadget/f_fastboot.c
+++ b/drivers/usb/gadget/f_fastboot.c
@@ -41,7 +41,9 @@
 #ifdef CONFIG_BRILLO_SUPPORT
 #include "bootctrl.h"
 #endif
-
+#ifdef CONFIG_BCB_SUPPORT
+#include "bcb.h"
+#endif
 #define FASTBOOT_VERSION		"0.4"
 
 #define FASTBOOT_INTERFACE_CLASS	0xff
@@ -1099,7 +1101,7 @@ static int _fastboot_setup_dev(void)
 		} else if (!strncmp(fastboot_env, "mmc", 3)) {
 			fastboot_devinfo.type = DEV_MMC;
 			fastboot_devinfo.dev_id = _fastboot_get_mmc_no(fastboot_env);
-#ifdef CONFIG_BRILLO_SUPPORT
+#ifdef CONFIG_BCB_SUPPORT
 			set_mmc_id(fastboot_devinfo.dev_id);
 #endif
 		}