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Diffstat (limited to 'arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c')
-rw-r--r--arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c480
1 files changed, 480 insertions, 0 deletions
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
new file mode 100644
index 0000000000..e2c6c43d88
--- /dev/null
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
@@ -0,0 +1,480 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2020, STMicroelectronics - All Rights Reserved
+ */
+
+#include <common.h>
+#include <console.h>
+#include <dfu.h>
+#include <malloc.h>
+#include <dm/uclass.h>
+#include <linux/list.h>
+#include <linux/list_sort.h>
+#include <linux/sizes.h>
+
+#include "stm32prog.h"
+
+#define OPT_SELECT BIT(0)
+#define OPT_EMPTY BIT(1)
+
+#define IS_SELECT(part) ((part)->option & OPT_SELECT)
+#define IS_EMPTY(part) ((part)->option & OPT_EMPTY)
+
+#define ALT_BUF_LEN SZ_1K
+
+DECLARE_GLOBAL_DATA_PTR;
+
+char *stm32prog_get_error(struct stm32prog_data *data)
+{
+ static const char error_msg[] = "Unspecified";
+
+ if (strlen(data->error) == 0)
+ strcpy(data->error, error_msg);
+
+ return data->error;
+}
+
+static int parse_flash_layout(struct stm32prog_data *data,
+ ulong addr,
+ ulong size)
+{
+ return -ENODEV;
+}
+
+static int __init part_cmp(void *priv, struct list_head *a, struct list_head *b)
+{
+ struct stm32prog_part_t *parta, *partb;
+
+ parta = container_of(a, struct stm32prog_part_t, list);
+ partb = container_of(b, struct stm32prog_part_t, list);
+
+ return parta->addr > partb->addr ? 1 : -1;
+}
+
+static int init_device(struct stm32prog_data *data,
+ struct stm32prog_dev_t *dev)
+{
+ struct blk_desc *block_dev = NULL;
+ int part_id;
+ u64 first_addr = 0, last_addr = 0;
+ struct stm32prog_part_t *part, *next_part;
+
+ switch (dev->target) {
+ default:
+ stm32prog_err("unknown device type = %d", dev->target);
+ return -ENODEV;
+ }
+
+ /* order partition list in offset order */
+ list_sort(NULL, &dev->part_list, &part_cmp);
+ part_id = 1;
+ pr_debug("id : Opt Phase Name target.n dev.n addr size part_off part_size\n");
+ list_for_each_entry(part, &dev->part_list, list) {
+ if (part->part_type == RAW_IMAGE) {
+ part->part_id = 0x0;
+ part->addr = 0x0;
+ if (block_dev)
+ part->size = block_dev->lba * block_dev->blksz;
+ else
+ part->size = last_addr;
+ pr_debug("-- : %1d %02x %14s %02d %02d.%02d %08llx %08llx\n",
+ part->option, part->id, part->name,
+ part->part_type, part->target,
+ part->dev_id, part->addr, part->size);
+ continue;
+ }
+
+ part->part_id = part_id++;
+
+ /* last partition : size to the end of the device */
+ if (part->list.next != &dev->part_list) {
+ next_part =
+ container_of(part->list.next,
+ struct stm32prog_part_t,
+ list);
+ if (part->addr < next_part->addr) {
+ part->size = next_part->addr -
+ part->addr;
+ } else {
+ stm32prog_err("%s (0x%x): same address : 0x%llx == %s (0x%x): 0x%llx",
+ part->name, part->id,
+ part->addr,
+ next_part->name,
+ next_part->id,
+ next_part->addr);
+ return -EINVAL;
+ }
+ } else {
+ if (part->addr <= last_addr) {
+ part->size = last_addr - part->addr;
+ } else {
+ stm32prog_err("%s (0x%x): invalid address 0x%llx (max=0x%llx)",
+ part->name, part->id,
+ part->addr, last_addr);
+ return -EINVAL;
+ }
+ }
+ if (part->addr < first_addr) {
+ stm32prog_err("%s (0x%x): invalid address 0x%llx (min=0x%llx)",
+ part->name, part->id,
+ part->addr, first_addr);
+ return -EINVAL;
+ }
+
+ pr_debug("%02d : %1d %02x %14s %02d %02d.%02d %08llx %08llx",
+ part->part_id, part->option, part->id, part->name,
+ part->part_type, part->target,
+ part->dev_id, part->addr, part->size);
+ }
+ return 0;
+}
+
+static int treat_partition_list(struct stm32prog_data *data)
+{
+ int i, j;
+ struct stm32prog_part_t *part;
+
+ for (j = 0; j < STM32PROG_MAX_DEV; j++) {
+ data->dev[j].target = STM32PROG_NONE;
+ INIT_LIST_HEAD(&data->dev[j].part_list);
+ }
+
+ for (i = 0; i < data->part_nb; i++) {
+ part = &data->part_array[i];
+ part->alt_id = -1;
+
+ /* skip partition with IP="none" */
+ if (part->target == STM32PROG_NONE) {
+ if (IS_SELECT(part)) {
+ stm32prog_err("Layout: selected none phase = 0x%x",
+ part->id);
+ return -EINVAL;
+ }
+ continue;
+ }
+
+ if (part->id == PHASE_FLASHLAYOUT ||
+ part->id > PHASE_LAST_USER) {
+ stm32prog_err("Layout: invalid phase = 0x%x",
+ part->id);
+ return -EINVAL;
+ }
+ for (j = i + 1; j < data->part_nb; j++) {
+ if (part->id == data->part_array[j].id) {
+ stm32prog_err("Layout: duplicated phase 0x%x at line %d and %d",
+ part->id, i, j);
+ return -EINVAL;
+ }
+ }
+ for (j = 0; j < STM32PROG_MAX_DEV; j++) {
+ if (data->dev[j].target == STM32PROG_NONE) {
+ /* new device found */
+ data->dev[j].target = part->target;
+ data->dev[j].dev_id = part->dev_id;
+ data->dev_nb++;
+ break;
+ } else if ((part->target == data->dev[j].target) &&
+ (part->dev_id == data->dev[j].dev_id)) {
+ break;
+ }
+ }
+ if (j == STM32PROG_MAX_DEV) {
+ stm32prog_err("Layout: too many device");
+ return -EINVAL;
+ }
+ part->dev = &data->dev[j];
+ list_add_tail(&part->list, &data->dev[j].part_list);
+ }
+
+ return 0;
+}
+
+static int stm32prog_alt_add(struct stm32prog_data *data,
+ struct dfu_entity *dfu,
+ struct stm32prog_part_t *part)
+{
+ int ret = 0;
+ int offset = 0;
+ char devstr[10];
+ char dfustr[10];
+ char buf[ALT_BUF_LEN];
+ u32 size;
+ char multiplier, type;
+
+ /* max 3 digit for sector size */
+ if (part->size > SZ_1M) {
+ size = (u32)(part->size / SZ_1M);
+ multiplier = 'M';
+ } else if (part->size > SZ_1K) {
+ size = (u32)(part->size / SZ_1K);
+ multiplier = 'K';
+ } else {
+ size = (u32)part->size;
+ multiplier = 'B';
+ }
+ if (IS_SELECT(part) && !IS_EMPTY(part))
+ type = 'e'; /*Readable and Writeable*/
+ else
+ type = 'a';/*Readable*/
+
+ memset(buf, 0, sizeof(buf));
+ offset = snprintf(buf, ALT_BUF_LEN - offset,
+ "@%s/0x%02x/1*%d%c%c ",
+ part->name, part->id,
+ size, multiplier, type);
+
+ if (part->part_type == RAW_IMAGE) {
+ u64 dfu_size;
+
+ dfu_size = part->size;
+ offset += snprintf(buf + offset, ALT_BUF_LEN - offset,
+ "raw 0x0 0x%llx", dfu_size);
+ } else {
+ offset += snprintf(buf + offset,
+ ALT_BUF_LEN - offset,
+ "part");
+ offset += snprintf(buf + offset, ALT_BUF_LEN - offset,
+ " %d;", part->part_id);
+ }
+ switch (part->target) {
+ default:
+ stm32prog_err("invalid target: %d", part->target);
+ return -ENODEV;
+ }
+ pr_debug("dfu_alt_add(%s,%s,%s)\n", dfustr, devstr, buf);
+ ret = dfu_alt_add(dfu, dfustr, devstr, buf);
+ pr_debug("dfu_alt_add(%s,%s,%s) result %d\n",
+ dfustr, devstr, buf, ret);
+
+ return ret;
+}
+
+static int stm32prog_alt_add_virt(struct dfu_entity *dfu,
+ char *name, int phase, int size)
+{
+ int ret = 0;
+ char devstr[4];
+ char buf[ALT_BUF_LEN];
+
+ sprintf(devstr, "%d", phase);
+ sprintf(buf, "@%s/0x%02x/1*%dBe", name, phase, size);
+ ret = dfu_alt_add(dfu, "virt", devstr, buf);
+ pr_debug("dfu_alt_add(virt,%s,%s) result %d\n", devstr, buf, ret);
+
+ return ret;
+}
+
+static int dfu_init_entities(struct stm32prog_data *data)
+{
+ int ret = 0;
+ int phase, i, alt_id;
+ struct stm32prog_part_t *part;
+ struct dfu_entity *dfu;
+ int alt_nb;
+
+ alt_nb = 1; /* number of virtual = CMD */
+ if (data->part_nb == 0)
+ alt_nb++; /* +1 for FlashLayout */
+ else
+ for (i = 0; i < data->part_nb; i++) {
+ if (data->part_array[i].target != STM32PROG_NONE)
+ alt_nb++;
+ }
+
+ if (dfu_alt_init(alt_nb, &dfu))
+ return -ENODEV;
+
+ puts("DFU alt info setting: ");
+ if (data->part_nb) {
+ alt_id = 0;
+ for (phase = 1;
+ (phase <= PHASE_LAST_USER) &&
+ (alt_id < alt_nb) && !ret;
+ phase++) {
+ /* ordering alt setting by phase id */
+ part = NULL;
+ for (i = 0; i < data->part_nb; i++) {
+ if (phase == data->part_array[i].id) {
+ part = &data->part_array[i];
+ break;
+ }
+ }
+ if (!part)
+ continue;
+ if (part->target == STM32PROG_NONE)
+ continue;
+ part->alt_id = alt_id;
+ alt_id++;
+
+ ret = stm32prog_alt_add(data, dfu, part);
+ }
+ } else {
+ char buf[ALT_BUF_LEN];
+
+ sprintf(buf, "@FlashLayout/0x%02x/1*256Ke ram %x 40000",
+ PHASE_FLASHLAYOUT, STM32_DDR_BASE);
+ ret = dfu_alt_add(dfu, "ram", NULL, buf);
+ pr_debug("dfu_alt_add(ram, NULL,%s) result %d\n", buf, ret);
+ }
+
+ if (!ret)
+ ret = stm32prog_alt_add_virt(dfu, "virtual", PHASE_CMD, 512);
+
+ if (ret)
+ stm32prog_err("dfu init failed: %d", ret);
+ puts("done\n");
+
+#ifdef DEBUG
+ dfu_show_entities();
+#endif
+ return ret;
+}
+
+static void stm32prog_end_phase(struct stm32prog_data *data)
+{
+ if (data->phase == PHASE_FLASHLAYOUT) {
+ if (parse_flash_layout(data, STM32_DDR_BASE, 0))
+ stm32prog_err("Layout: invalid FlashLayout");
+ return;
+ }
+
+ if (!data->cur_part)
+ return;
+}
+
+void stm32prog_do_reset(struct stm32prog_data *data)
+{
+ if (data->phase == PHASE_RESET) {
+ data->phase = PHASE_DO_RESET;
+ puts("Reset requested\n");
+ }
+}
+
+void stm32prog_next_phase(struct stm32prog_data *data)
+{
+ int phase, i;
+ struct stm32prog_part_t *part;
+ bool found;
+
+ phase = data->phase;
+ switch (phase) {
+ case PHASE_RESET:
+ case PHASE_END:
+ case PHASE_DO_RESET:
+ return;
+ }
+
+ /* found next selected partition */
+ data->cur_part = NULL;
+ data->phase = PHASE_END;
+ found = false;
+ do {
+ phase++;
+ if (phase > PHASE_LAST_USER)
+ break;
+ for (i = 0; i < data->part_nb; i++) {
+ part = &data->part_array[i];
+ if (part->id == phase) {
+ if (IS_SELECT(part) && !IS_EMPTY(part)) {
+ data->cur_part = part;
+ data->phase = phase;
+ found = true;
+ }
+ break;
+ }
+ }
+ } while (!found);
+
+ if (data->phase == PHASE_END)
+ puts("Phase=END\n");
+}
+
+static void stm32prog_devices_init(struct stm32prog_data *data)
+{
+ int i;
+ int ret;
+
+ ret = treat_partition_list(data);
+ if (ret)
+ goto error;
+
+ /* initialize the selected device */
+ for (i = 0; i < data->dev_nb; i++) {
+ ret = init_device(data, &data->dev[i]);
+ if (ret)
+ goto error;
+ }
+
+ return;
+
+error:
+ data->part_nb = 0;
+}
+
+int stm32prog_dfu_init(struct stm32prog_data *data)
+{
+ /* init device if no error */
+ if (data->part_nb)
+ stm32prog_devices_init(data);
+
+ if (data->part_nb)
+ stm32prog_next_phase(data);
+
+ /* prepare DFU for device read/write */
+ dfu_free_entities();
+ return dfu_init_entities(data);
+}
+
+int stm32prog_init(struct stm32prog_data *data, ulong addr, ulong size)
+{
+ memset(data, 0x0, sizeof(*data));
+ data->phase = PHASE_FLASHLAYOUT;
+
+ return parse_flash_layout(data, addr, size);
+}
+
+void stm32prog_clean(struct stm32prog_data *data)
+{
+ /* clean */
+ dfu_free_entities();
+ free(data->part_array);
+ free(data->header_data);
+}
+
+/* DFU callback: used after serial and direct DFU USB access */
+void dfu_flush_callback(struct dfu_entity *dfu)
+{
+ if (!stm32prog_data)
+ return;
+
+ if (dfu->dev_type == DFU_DEV_RAM) {
+ if (dfu->alt == 0 &&
+ stm32prog_data->phase == PHASE_FLASHLAYOUT) {
+ stm32prog_end_phase(stm32prog_data);
+ /* waiting DFU DETACH for reenumeration */
+ }
+ }
+
+ if (!stm32prog_data->cur_part)
+ return;
+
+ if (dfu->alt == stm32prog_data->cur_part->alt_id) {
+ stm32prog_end_phase(stm32prog_data);
+ stm32prog_next_phase(stm32prog_data);
+ }
+}
+
+void dfu_initiated_callback(struct dfu_entity *dfu)
+{
+ if (!stm32prog_data)
+ return;
+
+ if (!stm32prog_data->cur_part)
+ return;
+
+ /* force the saved offset for the current partition */
+ if (dfu->alt == stm32prog_data->cur_part->alt_id) {
+ dfu->offset = stm32prog_data->offset;
+ pr_debug("dfu offset = 0x%llx\n", dfu->offset);
+ }
+}
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