Add Support to Field Firmware Update (FFU) for eMMC v5.0 and up devices.
The code implemented according to JEDEC eMMC spec - JESD84-B50.pdf
http://www.jedec.org/standards-documents/technology-focus-areas/flash-memory-ssds-ufs-emmc/e-mmc
This patch version (V4) provides udev (request_firmware) implementation as
advised in previous patch version comments.
Signed-off-by: Avi Shchislowski <avi.shchislow...@sandisk.com>
Signed-off-by: Alex Lemberg <alex.lemb...@sandisk.com>
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig index
5562308..19ba729 100644
--- a/drivers/mmc/card/Kconfig
+++ b/drivers/mmc/card/Kconfig
@@ -68,3 +68,11 @@ config MMC_TEST
This driver is only of interest to those developing or
testing a host driver. Most people should say N here.
+
+config MMC_FFU
+ bool "FFU SUPPORT"
+ depends on MMC != n
+ help
+ This is an option to run firmware update on eMMC 5.0.
+ Field firmware updates (FFU) enables features enhancment
+ in the field.
diff --git a/drivers/mmc/card/Makefile b/drivers/mmc/card/Makefile index
c73b406..1e9223b 100644
--- a/drivers/mmc/card/Makefile
+++ b/drivers/mmc/card/Makefile
@@ -8,3 +8,4 @@ obj-$(CONFIG_MMC_TEST) += mmc_test.o
obj-$(CONFIG_SDIO_UART) += sdio_uart.o
+obj-$(CONFIG_MMC_FFU) += ffu.o
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index
7b5424f..8311200 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -41,6 +41,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sd.h>
+#include <linux/mmc/ffu.h>
#include <asm/uaccess.h>
@@ -525,6 +526,17 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
mmc_get_card(card);
+ if (cmd.opcode == MMC_FFU_DOWNLOAD_OP) {
+ err = mmc_ffu_download(card, &cmd , idata->buf,
+ idata->buf_bytes);
+ goto cmd_rel_host;
+ }
+
+ if (cmd.opcode == MMC_FFU_INSTALL_OP) {
+ err = mmc_ffu_install(card);
+ goto cmd_rel_host;
+ }
+
err = mmc_blk_part_switch(card, md);
if (err)
goto cmd_rel_host;
diff --git a/drivers/mmc/card/ffu.c b/drivers/mmc/card/ffu.c new file mode
100644 index 0000000..ed5f30a
--- /dev/null
+++ b/drivers/mmc/card/ffu.c
@@ -0,0 +1,605 @@
+/*
+ * * ffu.c
+ *
+ * Copyright 2007-2008 Pierre Ossman
+ *
+ * Modified by SanDisk Corp., Copyright (c) 2013 SanDisk Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+(at
+ * your option) any later version.
+ *
+ * This program includes bug.h, card.h, host.h, mmc.h, scatterlist.h,
+ * slab.h, ffu.h & swap.h header files
+ * The original, unmodified version of this program - the mmc_test.c
+ * file - is obtained under the GPL v2.0 license that is available via
+ * http://www.gnu.org/licenses/,
+ * or http://www.opensource.org/licenses/gpl-2.0.php
+*/
+
+#include <linux/bug.h>
+#include <linux/errno.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/scatterlist.h>
+#include <linux/slab.h>
+#include <linux/swap.h>
+#include <linux/mmc/ffu.h>
+
+/**
+ * struct mmc_ffu_pages - pages allocated by 'alloc_pages()'.
+ * @page: first page in the allocation
+ * @order: order of the number of pages allocated */ struct
+mmc_ffu_pages {
+ struct page *page;
+ unsigned int order;
+};
+
+/**
+ * struct mmc_ffu_mem - allocated memory.
+ * @arr: array of allocations
+ * @cnt: number of allocations
+ */
+struct mmc_ffu_mem {
+ struct mmc_ffu_pages *arr;
+ unsigned int cnt;
+};
+
+struct mmc_ffu_area {
+ unsigned long max_sz;
+ unsigned int max_tfr;
+ unsigned int max_segs;
+ unsigned int max_seg_sz;
+ unsigned int blocks;
+ unsigned int sg_len;
+ struct mmc_ffu_mem *mem;
+ struct scatterlist *sg;
+};
+
+static void mmc_ffu_prepare_mrq(struct mmc_card *card,
+ struct mmc_request *mrq, struct scatterlist *sg, unsigned int sg_len,
+ u32 arg, unsigned int blocks, unsigned int blksz, int write) {
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop);
+
+ if (blocks > 1) {
+ mrq->cmd->opcode = write ?
+ MMC_WRITE_MULTIPLE_BLOCK : MMC_READ_MULTIPLE_BLOCK;
+ } else {
+ mrq->cmd->opcode = write ? MMC_WRITE_BLOCK :
+ MMC_READ_SINGLE_BLOCK;
+ }
+
+ mrq->cmd->arg = arg;
+ if (!mmc_card_blockaddr(card))
+ mrq->cmd->arg <<= 9;
+
+ mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+ if (blocks == 1) {
+ mrq->stop = NULL;
+ } else {
+ mrq->stop->opcode = MMC_STOP_TRANSMISSION;
+ mrq->stop->arg = 0;
+ mrq->stop->flags = MMC_RSP_R1B | MMC_CMD_AC;
+ }
+
+ mrq->data->blksz = blksz;
+ mrq->data->blocks = blocks;
+ mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
+ mrq->data->sg = sg;
+ mrq->data->sg_len = sg_len;
+
+ mmc_set_data_timeout(mrq->data, card); }
+
+/*
+ * Checks that a normal transfer didn't have any errors */ static int
+mmc_ffu_check_result(struct mmc_request *mrq) {
+ BUG_ON(!mrq || !mrq->cmd || !mrq->data);
+
+ if (mrq->cmd->error != 0)
+ return -EINVAL;
+
+ if (mrq->data->error != 0)
+ return -EINVAL;
+
+ if (mrq->stop != NULL && mrq->stop->error != 0)
+ return -1;
+
+ if (mrq->data->bytes_xfered != (mrq->data->blocks * mrq->data->blksz))
+ return -EINVAL;
+
+ return 0;
+}
+
+static int mmc_ffu_busy(struct mmc_command *cmd) {
+ return !(cmd->resp[0] & R1_READY_FOR_DATA) ||
+ (R1_CURRENT_STATE(cmd->resp[0]) == R1_STATE_PRG); }
+
+static int mmc_ffu_wait_busy(struct mmc_card *card) {
+ int ret, busy = 0;
+ struct mmc_command cmd = {0};
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC;
+
+ do {
+ ret = mmc_wait_for_cmd(card->host, &cmd, 0);
+ if (ret)
+ break;
+
+ if (!busy && mmc_ffu_busy(&cmd)) {
+ busy = 1;
+ if (card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) {
+ pr_warn("%s: Warning: Host did not "
+ "wait for busy state to end.\n",
+ mmc_hostname(card->host));
+ }
+ }
+
+ } while (mmc_ffu_busy(&cmd));
+
+ return ret;
+}
+
+/*
+ * transfer with certain parameters
+ */
+static int mmc_ffu_simple_transfer(struct mmc_card *card,
+ struct scatterlist *sg, unsigned int sg_len, u32 arg,
+ unsigned int blocks, unsigned int blksz, int write) {
+ struct mmc_request mrq = {0};
+ struct mmc_command cmd = {0};
+ struct mmc_command stop = {0};
+ struct mmc_data data = {0};
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+ mrq.stop = &stop;
+ mmc_ffu_prepare_mrq(card, &mrq, sg, sg_len, arg, blocks, blksz,
+ write);
+ mmc_wait_for_req(card->host, &mrq);
+
+ mmc_ffu_wait_busy(card);
+
+ return mmc_ffu_check_result(&mrq);
+}
+
+/*
+ * Map memory into a scatterlist.
+ */
+static int mmc_ffu_map_sg(struct mmc_ffu_mem *mem, unsigned long size,
+ struct scatterlist *sglist, unsigned int max_segs,
+ unsigned int max_seg_sz, unsigned int *sg_len,
+ int min_sg_len)
+{
+ struct scatterlist *sg = NULL;
+ unsigned int i;
+ unsigned long sz = size;
+
+ sg_init_table(sglist, max_segs);
+ if (min_sg_len > max_segs)
+ min_sg_len = max_segs;
+
+ *sg_len = 0;
+ do {
+ for (i = 0; i < mem->cnt; i++) {
+ unsigned long len = PAGE_SIZE << mem->arr[i].order;
+
+ if (min_sg_len && (size / min_sg_len < len))
+ len = ALIGN(size / min_sg_len, CARD_BLOCK_SIZE);
+ if (len > sz)
+ len = sz;
+ if (len > max_seg_sz)
+ len = max_seg_sz;
+ if (sg)
+ sg = sg_next(sg);
+ else
+ sg = sglist;
+ if (!sg)
+ return -EINVAL;
+ sg_set_page(sg, mem->arr[i].page, len, 0);
+ sz -= len;
+ *sg_len += 1;
+ if (!sz)
+ break;
+ }
+ } while (sz);
+
+ if (sg)
+ sg_mark_end(sg);
+
+ return 0;
+}
+
+static void mmc_ffu_free_mem(struct mmc_ffu_mem *mem) {
+ if (!mem)
+ return;
+ while (mem->cnt--)
+ __free_pages(mem->arr[mem->cnt].page, mem->arr[mem->cnt].order);
+ kfree(mem->arr);
+}
+
+/*
+ * Cleanup struct mmc_ffu_area.
+ */
+static int mmc_ffu_area_cleanup(struct mmc_ffu_area *area) {
+ kfree(area->sg);
+ mmc_ffu_free_mem(area->mem);
+
+ return 0;
+}
+
+/*
+ * Allocate a lot of memory, preferably max_sz but at least min_sz. In
+case
+ * there isn't much memory do not exceed 1/16th total low mem pages.
+Also do
+ * not exceed a maximum number of segments and try not to make segments
+much
+ * bigger than maximum segment size.
+ */
+static struct mmc_ffu_mem *mmc_ffu_alloc_mem(unsigned long min_sz,
+ unsigned long max_sz, unsigned int max_segs, unsigned int max_seg_sz)
+{
+ unsigned long max_page_cnt = DIV_ROUND_UP(max_sz, PAGE_SIZE);
+ unsigned long min_page_cnt = DIV_ROUND_UP(min_sz, PAGE_SIZE);
+ unsigned long max_seg_page_cnt = DIV_ROUND_UP(max_seg_sz, PAGE_SIZE);
+ unsigned long page_cnt = 0;
+ unsigned long limit = nr_free_buffer_pages() >> 4;
+ struct mmc_ffu_mem *mem;
+
+ if (max_page_cnt > limit)
+ max_page_cnt = limit;
+ if (min_page_cnt > max_page_cnt)
+ min_page_cnt = max_page_cnt;
+
+ if (max_seg_page_cnt > max_page_cnt)
+ max_seg_page_cnt = max_page_cnt;
+
+ if (max_segs > max_page_cnt)
+ max_segs = max_page_cnt;
+
+ mem = kzalloc(sizeof(struct mmc_ffu_mem), GFP_KERNEL);
+ if (!mem)
+ return NULL;
+
+ mem->arr = kzalloc(sizeof(struct mmc_ffu_pages) * max_segs, GFP_KERNEL);
+ if (!mem->arr)
+ goto out_free;
+
+ while (max_page_cnt) {
+ struct page *page;
+ unsigned int order;
+ gfp_t flags = GFP_KERNEL | GFP_DMA | __GFP_NOWARN |
+ __GFP_NORETRY;
+
+ order = get_order(max_seg_page_cnt << PAGE_SHIFT);
+ while (1) {
+ page = alloc_pages(flags, order);
+ if (page || !order)
+ break;
+ order -= 1;
+ }
+ if (!page) {
+ if (page_cnt < min_page_cnt)
+ goto out_free;
+ break;
+ }
+ mem->arr[mem->cnt].page = page;
+ mem->arr[mem->cnt].order = order;
+ mem->cnt += 1;
+ if (max_page_cnt <= (1UL << order))
+ break;
+ max_page_cnt -= 1UL << order;
+ page_cnt += 1UL << order;
+ if (mem->cnt >= max_segs) {
+ if (page_cnt < min_page_cnt)
+ goto out_free;
+ break;
+ }
+ }
+
+ return mem;
+
+out_free:
+ mmc_ffu_free_mem(mem);
+ return NULL;
+}
+
+/*
+ * Initialize an area for data transfers.
+ * Copy the data to the allocated pages.
+ */
+static int mmc_ffu_area_init(struct mmc_ffu_area *area, struct mmc_card *card,
+ u8 *data, unsigned int size)
+{
+ int ret, i, length;
+
+ area->max_segs = card->host->max_segs;
+ area->max_seg_sz = card->host->max_seg_size & ~(CARD_BLOCK_SIZE - 1);
+ area->max_tfr = size;
+
+ if (area->max_tfr >> 9 > card->host->max_blk_count)
+ area->max_tfr = card->host->max_blk_count << 9;
+ if (area->max_tfr > card->host->max_req_size)
+ area->max_tfr = card->host->max_req_size;
+ if (area->max_tfr / area->max_seg_sz > area->max_segs)
+ area->max_tfr = area->max_segs * area->max_seg_sz;
+
+ /*
+ * Try to allocate enough memory for a max. sized transfer. Less is OK
+ * because the same memory can be mapped into the scatterlist more than
+ * once. Also, take into account the limits imposed on scatterlist
+ * segments by the host driver.
+ */
+ area->mem = mmc_ffu_alloc_mem(1, area->max_tfr, area->max_segs,
+ area->max_seg_sz);
+ if (!area->mem)
+ return -ENOMEM;
+
+ /* copy data to page */
+ length = 0;
+ for (i = 0; i < area->mem->cnt; i++) {
+ memcpy(page_address(area->mem->arr[i].page), data + length,
+ min(size - length, area->max_seg_sz));
+ length += area->max_seg_sz;
+ }
+
+ area->sg = kmalloc(sizeof(struct scatterlist) * area->max_segs,
+ GFP_KERNEL);
+ if (!area->sg) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ ret = mmc_ffu_map_sg(area->mem, size, area->sg,
+ area->max_segs, area->max_seg_sz, &area->sg_len, 1);
+
+ if (ret != 0)
+ goto out_free;
+
+ return 0;
+
+out_free:
+ mmc_ffu_area_cleanup(area);
+ return ret;
+}
+
+static int mmc_ffu_write(struct mmc_card *card, u8 *src, u32 arg,
+ int size)
+{
+ int rc;
+ struct mmc_ffu_area mem;
+
+ mem.sg = NULL;
+ mem.mem = NULL;
+
+ if (!src) {
+ pr_err("FFU: %s: data buffer is NULL\n",
+ mmc_hostname(card->host));
+ return -EINVAL;
+ }
+ rc = mmc_ffu_area_init(&mem, card, src, size);
+ if (rc != 0)
+ goto exit;
+
+ rc = mmc_ffu_simple_transfer(card, mem.sg, mem.sg_len, arg,
+ size / CARD_BLOCK_SIZE, CARD_BLOCK_SIZE, 1);
+
+exit:
+ mmc_ffu_area_cleanup(&mem);
+ return rc;
+}
+/* Flush all scheduled work from the MMC work queue.
+ * and initialize the MMC device */
+static int mmc_ffu_restart(struct mmc_card *card) {
+ struct mmc_host *host = card->host;
+ int err = 0;
+
+ mmc_cache_ctrl(host, 0);
+ err = mmc_power_save_host(host);
+ if (err) {
+ pr_warn("%s: going to sleep failed (%d)!!!\n",
+ __func__ , err);
+ goto exit;
+ }
+
+ err = mmc_power_restore_host(host);
+
+exit:
+
+ return err;
+}
+
+/* Host set the EXT_CSD */
+static int mmc_host_set_ffu(struct mmc_card *card, u32 ffu_enable) {
+ int err;
+
+ /* check if card is eMMC 5.0 or higher */
+ if (card->ext_csd.rev < 7)
+ return -EINVAL;
+
+ if (FFU_ENABLED(ffu_enable)) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_FW_CONFIG, MMC_FFU_ENABLE,
+ card->ext_csd.generic_cmd6_time);
+ if (err) {
+ pr_err("%s: switch to FFU failed with error %d\n",
+ mmc_hostname(card->host), err);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+int mmc_ffu_download(struct mmc_card *card, struct mmc_command *cmd,
+ u8 *data, int buf_bytes)
+{
+ u8 ext_csd[CARD_BLOCK_SIZE];
+ int err;
+ int ret;
+
+ /* Read the EXT_CSD */
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ pr_err("FFU: %s: error %d sending ext_csd\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ /* Check if FFU is supported by card */
+ if (!FFU_SUPPORTED_MODE(ext_csd[EXT_CSD_SUPPORTED_MODE])) {
+ err = -EINVAL;
+ pr_err("FFU: %s: error %d FFU is not supported\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ err = mmc_host_set_ffu(card, ext_csd[EXT_CSD_FW_CONFIG]);
+ if (err) {
+ pr_err("FFU: %s: error %d FFU is not supported\n",
+ mmc_hostname(card->host), err);
+ err = -EINVAL;
+ goto exit;
+ }
+
+ /* set device to FFU mode */
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_MODE_CONFIG,
+ MMC_FFU_MODE_SET, card->ext_csd.generic_cmd6_time);
+ if (err) {
+ pr_err("FFU: %s: error %d FFU is not supported\n",
+ mmc_hostname(card->host), err);
+ goto exit_normal;
+ }
+
+ /* set CMD ARG */
+ cmd->arg = ext_csd[EXT_CSD_FFU_ARG] |
+ ext_csd[EXT_CSD_FFU_ARG + 1] << 8 |
+ ext_csd[EXT_CSD_FFU_ARG + 2] << 16 |
+ ext_csd[EXT_CSD_FFU_ARG + 3] << 24;
+
+ err = mmc_ffu_write(card, data, cmd->arg, buf_bytes);
+
+exit_normal:
+ /* host switch back to work in normal MMC Read/Write commands */
+ ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_MODE_CONFIG, MMC_FFU_MODE_NORMAL,
+ card->ext_csd.generic_cmd6_time);
+ if (ret)
+ err = ret;
+
+exit:
+ return err;
+}
+EXPORT_SYMBOL(mmc_ffu_download);
+
+int mmc_ffu_install(struct mmc_card *card) {
+ u8 ext_csd[CARD_BLOCK_SIZE];
+ int err;
+ u32 ffu_data_len;
+ u32 timeout;
+
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ pr_err("FFU: %s: error %d sending ext_csd\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ /* Check if FFU is supported */
+ if (!FFU_SUPPORTED_MODE(ext_csd[EXT_CSD_SUPPORTED_MODE]) ||
+ FFU_CONFIG(ext_csd[EXT_CSD_FW_CONFIG])) {
+ err = -EINVAL;
+ pr_err("FFU: %s: error %d FFU is not supported\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ ffu_data_len = ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG]|
+ ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 1] << 8 |
+ ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 2] << 16 |
+ ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 3] << 24;
+
+ if (!ffu_data_len) {
+ err = -EPERM;
+ return err;
+ }
+
+ /* check mode operation */
+ if (!FFU_FEATURES(ext_csd[EXT_CSD_FFU_FEATURES])) {
+ /* restart the eMMC */
+ err = mmc_ffu_restart(card);
+ if (err) {
+ pr_err("FFU: %s: error %d FFU install:\n",
+ mmc_hostname(card->host), err);
+ }
+ } else {
+ /* set device to FFU mode */
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_MODE_CONFIG, 0x1,
+ card->ext_csd.generic_cmd6_time);
+ if (err) {
+ pr_err("FFU: %s: error %d FFU is not
supported\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ timeout = ext_csd[EXT_CSD_OPERATION_CODE_TIMEOUT];
+ if (timeout == 0 || timeout > 0x17) {
+ timeout = 0x17;
+ pr_warn("FFU: %s: operation code timeout is out
"
+ "of range. Using maximum
timeout.\n",
+ mmc_hostname(card->host));
+ }
+
+ /* timeout is at millisecond resolution */
+ timeout = (100 * (1 << timeout) / 1000) + 1;
+
+ /* set ext_csd to install mode */
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_MODE_OPERATION_CODES,
+ MMC_FFU_INSTALL_SET, timeout);
+
+ if (err) {
+ pr_err("FFU: %s: error %d setting install
mode\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+
+ /* read ext_csd */
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err) {
+ pr_err("FFU: %s: error %d sending ext_csd\n",
+ mmc_hostname(card->host), err);
+ goto exit;
+ }
+ /* return status */
+ err = ext_csd[EXT_CSD_FFU_STATUS];
+ if (err) {
+ pr_err("FFU: %s: error %d FFU install:\n",
+ mmc_hostname(card->host), err);
+ err = -EINVAL;
+ goto exit;
+ }
+ }
+
+exit:
+ return err;
+}
+EXPORT_SYMBOL(mmc_ffu_install);
+
diff --git a/include/linux/mmc/ffu.h b/include/linux/mmc/ffu.h new file mode
100644 index 0000000..be70880
--- /dev/null
+++ b/include/linux/mmc/ffu.h
@@ -0,0 +1,63 @@
+/*
+ *
+ * ffu.h
+ *
+ * Copyright (c) 2013 SanDisk Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+(at
+ * your option) any later version.
+ *
+ * This program was created by SanDisk Corp
+ * The ffu.h file is obtained under the GPL v2.0 license that is
+ * available via http://www.gnu.org/licenses/,
+ * or http://www.opensource.org/licenses/gpl-2.0.php
+*/
+
+#if !defined(_FFU_H_)
+#define _FFU_H_
+
+#include <linux/mmc/card.h>
+
+#define CARD_BLOCK_SIZE 512
+
+/*
+ * eMMC5.0 Field Firmware Update (FFU) opcodes */ #define
+MMC_FFU_DOWNLOAD_OP 302 #define MMC_FFU_INSTALL_OP 303
+
+#define MMC_FFU_MODE_SET 0x1
+#define MMC_FFU_MODE_NORMAL 0x0
+#define MMC_FFU_INSTALL_SET 0x1
+
+#ifdef CONFIG_MMC_FFU
+#define MMC_FFU_ENABLE 0x0
+#define MMC_FFU_CONFIG 0x1
+#define MMC_FFU_SUPPORTED_MODES 0x1
+#define MMC_FFU_FEATURES 0x1
+
+#define FFU_ENABLED(ffu_enable) (ffu_enable & MMC_FFU_CONFIG)
+#define FFU_SUPPORTED_MODE(ffu_sup_mode) \
+ (ffu_sup_mode && MMC_FFU_SUPPORTED_MODES) #define
+FFU_CONFIG(ffu_config) (ffu_config & MMC_FFU_CONFIG) #define
+FFU_FEATURES(ffu_fetures) (ffu_fetures & MMC_FFU_FEATURES)
+
+int mmc_ffu_download(struct mmc_card *card, struct mmc_command *cmd,
+ u8 *data, int buf_bytes);
+int mmc_ffu_install(struct mmc_card *card); #else static inline int
+mmc_ffu_download(struct mmc_card *card,
+ struct mmc_command *cmd, u8 *data, int buf_bytes) {
+ return -ENOSYS;
+}
+static inline int mmc_ffu_install(struct mmc_card *card) {
+ return -ENOSYS;
+}
+
+#endif
+#endif /* FFU_H_ */
+
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h index
50bcde3..bf29e52 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -272,6 +272,9 @@ struct _mmc_csd {
* EXT_CSD fields
*/
+#define EXT_CSD_FFU_STATUS 26 /* R */
+#define EXT_CSD_MODE_OPERATION_CODES 29 /* W */
+#define EXT_CSD_MODE_CONFIG 30 /* R/W */
#define EXT_CSD_FLUSH_CACHE 32 /* W */
#define EXT_CSD_CACHE_CTRL 33 /* R/W */
#define EXT_CSD_POWER_OFF_NOTIFICATION 34 /* R/W */
@@ -290,6 +293,7 @@ struct _mmc_csd {
#define EXT_CSD_SANITIZE_START 165 /* W */
#define EXT_CSD_WR_REL_PARAM 166 /* RO */
#define EXT_CSD_RPMB_MULT 168 /* RO */
+#define EXT_CSD_FW_CONFIG 169 /* R/W */
#define EXT_CSD_BOOT_WP 173 /* R/W */
#define EXT_CSD_ERASE_GROUP_DEF 175 /* R/W */
#define EXT_CSD_PART_CONFIG 179 /* R/W */
@@ -325,6 +329,11 @@ struct _mmc_csd {
#define EXT_CSD_POWER_OFF_LONG_TIME 247 /* RO */
#define EXT_CSD_GENERIC_CMD6_TIME 248 /* RO */
#define EXT_CSD_CACHE_SIZE 249 /* RO, 4 bytes */
+#define EXT_CSD_NUM_OF_FW_SEC_PROG 302 /* RO */
+#define EXT_CSD_FFU_ARG 487 /* RO, 4 bytes */
+#define EXT_CSD_OPERATION_CODE_TIMEOUT 491 /* RO */
+#define EXT_CSD_FFU_FEATURES 492 /* RO */
+#define EXT_CSD_SUPPORTED_MODE 493 /* RO */
#define EXT_CSD_TAG_UNIT_SIZE 498 /* RO */
#define EXT_CSD_DATA_TAG_SUPPORT 499 /* RO */
#define EXT_CSD_MAX_PACKED_WRITES 500 /* RO */
--
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