[PATCH 14/18] stm32mp: stm32prog: add pmic NVM update support
Patrick Delaunay
patrick.delaunay at st.com
Wed Mar 18 09:24:59 CET 2020
Add a virtual partition to update the pmic non volatile memory.
(on ST board, STPMIC1).
Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
---
.../mach-stm32mp/cmd_stm32prog/stm32prog.c | 95 ++++++++++++++++++-
.../mach-stm32mp/cmd_stm32prog/stm32prog.h | 10 ++
.../cmd_stm32prog/stm32prog_usb.c | 11 +++
3 files changed, 115 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
index cd826dbb9c..d127afefaa 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.c
@@ -7,6 +7,7 @@
#include <console.h>
#include <dfu.h>
#include <malloc.h>
+#include <misc.h>
#include <mmc.h>
#include <part.h>
#include <asm/arch/stm32mp1_smc.h>
@@ -1107,7 +1108,7 @@ static int dfu_init_entities(struct stm32prog_data *data)
struct dfu_entity *dfu;
int alt_nb;
- alt_nb = 2; /* number of virtual = CMD, OTP*/
+ alt_nb = 3; /* number of virtual = CMD, OTP, PMIC*/
if (data->part_nb == 0)
alt_nb++; /* +1 for FlashLayout */
else
@@ -1158,6 +1159,9 @@ static int dfu_init_entities(struct stm32prog_data *data)
if (!ret)
ret = stm32prog_alt_add_virt(dfu, "OTP", PHASE_OTP, 512);
+ if (!ret && CONFIG_IS_ENABLED(DM_PMIC))
+ ret = stm32prog_alt_add_virt(dfu, "PMIC", PHASE_PMIC, 8);
+
if (ret)
stm32prog_err("dfu init failed: %d", ret);
puts("done\n");
@@ -1285,6 +1289,93 @@ int stm32prog_otp_start(struct stm32prog_data *data)
#endif
}
+int stm32prog_pmic_write(struct stm32prog_data *data, u32 offset, u8 *buffer,
+ long *size)
+{
+ pr_debug("%s: %x %lx\n", __func__, offset, *size);
+
+ if (!offset)
+ memset(data->pmic_part, 0, PMIC_SIZE);
+
+ if (offset + *size > PMIC_SIZE)
+ *size = PMIC_SIZE - offset;
+
+ memcpy(&data->pmic_part[offset], buffer, *size);
+
+ return 0;
+}
+
+int stm32prog_pmic_read(struct stm32prog_data *data, u32 offset, u8 *buffer,
+ long *size)
+{
+ int result = 0, ret;
+ struct udevice *dev;
+
+ if (!CONFIG_IS_ENABLED(PMIC_STPMIC1)) {
+ stm32prog_err("PMIC update not supported");
+
+ return -EOPNOTSUPP;
+ }
+
+ pr_debug("%s: %x %lx\n", __func__, offset, *size);
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_GET_DRIVER(stpmic1_nvm),
+ &dev);
+ if (ret)
+ return ret;
+
+ /* alway request PMIC for first packet */
+ if (!offset) {
+ /* init struct with 0 */
+ memset(data->pmic_part, 0, PMIC_SIZE);
+
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_GET_DRIVER(stpmic1_nvm),
+ &dev);
+ if (ret)
+ return ret;
+
+ ret = misc_read(dev, 0xF8, data->pmic_part, PMIC_SIZE);
+ if (ret < 0) {
+ result = ret;
+ goto end_pmic_read;
+ }
+ if (ret != PMIC_SIZE) {
+ result = -EACCES;
+ goto end_pmic_read;
+ }
+ }
+
+ if (offset + *size > PMIC_SIZE)
+ *size = PMIC_SIZE - offset;
+
+ memcpy(buffer, &data->pmic_part[offset], *size);
+
+end_pmic_read:
+ pr_debug("%s: result %i\n", __func__, result);
+ return result;
+}
+
+int stm32prog_pmic_start(struct stm32prog_data *data)
+{
+ int ret;
+ struct udevice *dev;
+
+ if (!CONFIG_IS_ENABLED(PMIC_STPMIC1)) {
+ stm32prog_err("PMIC update not supported");
+
+ return -EOPNOTSUPP;
+ }
+
+ ret = uclass_get_device_by_driver(UCLASS_MISC,
+ DM_GET_DRIVER(stpmic1_nvm),
+ &dev);
+ if (ret)
+ return ret;
+
+ return misc_write(dev, 0xF8, data->pmic_part, PMIC_SIZE);
+}
+
/* copy FSBL on NAND to improve reliability on NAND */
static int stm32prog_copy_fsbl(struct stm32prog_part_t *part)
{
@@ -1585,6 +1676,8 @@ void dfu_flush_callback(struct dfu_entity *dfu)
if (dfu->dev_type == DFU_DEV_VIRT) {
if (dfu->data.virt.dev_num == PHASE_OTP)
stm32prog_otp_start(stm32prog_data);
+ else if (dfu->data.virt.dev_num == PHASE_PMIC)
+ stm32prog_pmic_start(stm32prog_data);
return;
}
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
index 6024657433..83b27980f5 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog.h
@@ -12,6 +12,7 @@
#define PHASE_LAST_USER 0xF0
#define PHASE_CMD 0xF1
#define PHASE_OTP 0xF2
+#define PHASE_PMIC 0xF4
#define PHASE_END 0xFE
#define PHASE_RESET 0xFF
#define PHASE_DO_RESET 0x1FF
@@ -19,6 +20,7 @@
#define DEFAULT_ADDRESS 0xFFFFFFFF
#define OTP_SIZE 1024
+#define PMIC_SIZE 8
enum stm32prog_target {
STM32PROG_NONE,
@@ -120,6 +122,7 @@ struct stm32prog_data {
char error[255];
struct stm32prog_part_t *cur_part;
u32 *otp_part;
+ u8 pmic_part[PMIC_SIZE];
/* STM32 header information */
struct raw_header_s *header_data;
@@ -135,6 +138,13 @@ int stm32prog_otp_read(struct stm32prog_data *data, u32 offset,
u8 *buffer, long *size);
int stm32prog_otp_start(struct stm32prog_data *data);
+/* PMIC access */
+int stm32prog_pmic_write(struct stm32prog_data *data, u32 offset,
+ u8 *buffer, long *size);
+int stm32prog_pmic_read(struct stm32prog_data *data, u32 offset,
+ u8 *buffer, long *size);
+int stm32prog_pmic_start(struct stm32prog_data *data);
+
/* generic part*/
u8 stm32prog_header_check(struct raw_header_s *raw_header,
struct image_header_s *header);
diff --git a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_usb.c b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_usb.c
index 4a4b4d326b..34f27c074f 100644
--- a/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_usb.c
+++ b/arch/arm/mach-stm32mp/cmd_stm32prog/stm32prog_usb.c
@@ -134,6 +134,10 @@ int stm32prog_write_medium_virt(struct dfu_entity *dfu, u64 offset,
case PHASE_OTP:
return stm32prog_otp_write(stm32prog_data, (u32)offset,
buf, len);
+
+ case PHASE_PMIC:
+ return stm32prog_pmic_write(stm32prog_data, (u32)offset,
+ buf, len);
}
*len = 0;
return 0;
@@ -152,6 +156,10 @@ int stm32prog_read_medium_virt(struct dfu_entity *dfu, u64 offset,
case PHASE_OTP:
return stm32prog_otp_read(stm32prog_data, (u32)offset,
buf, len);
+
+ case PHASE_PMIC:
+ return stm32prog_pmic_read(stm32prog_data, (u32)offset,
+ buf, len);
}
*len = 0;
return 0;
@@ -173,6 +181,9 @@ int stm32prog_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
case PHASE_OTP:
*size = OTP_SIZE;
break;
+ case PHASE_PMIC:
+ *size = PMIC_SIZE;
+ break;
}
return 0;
--
2.17.1
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