* [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064
@ 2018-04-10 11:40 Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Eugeniy Paltsev @ 2018-04-10 11:40 UTC (permalink / raw)
To: u-boot
Add support for the SST sst26wf016, sst26wf032 and sst26wf064 flash IC:
sst26wf*** flash series block protection implementation differs from other
SST series, so we add implementation for sst26wf*** lock/unlock/is_locked
functions.
Add sst26wf016, sst26wf032 and sst26wf064 flash IC info to spi_flash_ids list.
Changes v4->v5:
* Return EACCES when flash is locked instead of custom define (SF_LOCKED)
* Add SST26_CTL_* prefix to sst27 lock ops enum.
* Move all sst26 code inside of existing CONFIG_SPI_FLASH_SST #ifdef.
Changes v3->v4:
* Make sst26_process_bpr() and sst26_lock_ctl() functions static.
Changes v2->v3:
* Move SST26 command defenition to sf_internal.h
* Merge sst26_set_bpr, sst26_clear_bpr and sst26_check_bpr functions
into single sst26_process_bpr function.
* Use SF_UNLOCKED/SF_LOCKED instead of magic numbers in
sst26_lock_ctl()
Changes v1->v2:
* Use generic defines from linux/sizes.h instead of custom ones.
Eugeniy Paltsev (2):
SPI Flash: add support of sst26wf* flash ICs protection ops
SF: add support for sst26wf016, sst26wf032, sst26wf064
drivers/mtd/spi/sf_internal.h | 18 +++++
drivers/mtd/spi/spi_flash.c | 165 ++++++++++++++++++++++++++++++++++++++++
drivers/mtd/spi/spi_flash_ids.c | 3 +
3 files changed, 186 insertions(+)
--
2.14.3
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops
2018-04-10 11:40 [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
@ 2018-04-10 11:40 ` Eugeniy Paltsev
2018-04-12 12:59 ` Eugeniy Paltsev
2018-04-16 13:52 ` Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 2/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
2018-04-19 11:25 ` [U-Boot] [PATCH v5 0/2] " Jagan Teki
2 siblings, 2 replies; 6+ messages in thread
From: Eugeniy Paltsev @ 2018-04-10 11:40 UTC (permalink / raw)
To: u-boot
sst26wf flash series block protection implementation differs
from other SST series, so add specific implementation
flash_lock/flash_unlock/flash_is_locked functions for sst26wf
flash ICs.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
Changes v4->v5:
* Return EACCES when flash is locked instead of custom define (SF_LOCKED)
* Add SST26_CTL_* prefix to sst27 lock ops enum.
* Move all sst26 code inside of existing CONFIG_SPI_FLASH_SST #ifdef.
Changes v3->v4:
* Make sst26_process_bpr() and sst26_lock_ctl() functions static.
Changes v2->v3:
* Move SST26 command defenition to sf_internal.h
* Merge sst26_set_bpr, sst26_clear_bpr and sst26_check_bpr functions
into single sst26_process_bpr function.
* Use SF_UNLOCKED/SF_LOCKED instead of magic numbers in
sst26_lock_ctl()
Changes v1->v2:
* Use generic defines from linux/sizes.h instead of custom ones.
drivers/mtd/spi/sf_internal.h | 13 ++++
drivers/mtd/spi/spi_flash.c | 168 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 181 insertions(+)
diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
index 839cdbe1b0..614a293234 100644
--- a/drivers/mtd/spi/sf_internal.h
+++ b/drivers/mtd/spi/sf_internal.h
@@ -87,6 +87,19 @@ enum spi_nor_option_flags {
/* SST specific */
#ifdef CONFIG_SPI_FLASH_SST
+#define SST26_CMD_READ_BPR 0x72
+#define SST26_CMD_WRITE_BPR 0x42
+
+#define SST26_BPR_8K_NUM 4
+#define SST26_MAX_BPR_REG_LEN (18 + 1)
+#define SST26_BOUND_REG_SIZE ((32 + SST26_BPR_8K_NUM * 8) * SZ_1K)
+
+enum lock_ctl {
+ SST26_CTL_LOCK,
+ SST26_CTL_UNLOCK,
+ SST26_CTL_CHECK
+};
+
# define CMD_SST_BP 0x02 /* Byte Program */
# define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 2e61685d3e..5e5bd5d533 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -16,6 +16,7 @@
#include <spi.h>
#include <spi_flash.h>
#include <linux/log2.h>
+#include <linux/sizes.h>
#include <dma.h>
#include "sf_internal.h"
@@ -541,6 +542,164 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
}
#ifdef CONFIG_SPI_FLASH_SST
+static bool sst26_process_bpr(u32 bpr_size, u8 *cmd, u32 bit, enum lock_ctl ctl)
+{
+ switch (ctl) {
+ case SST26_CTL_LOCK:
+ cmd[bpr_size - (bit / 8) - 1] |= BIT(bit % 8);
+ break;
+ case SST26_CTL_UNLOCK:
+ cmd[bpr_size - (bit / 8) - 1] &= ~BIT(bit % 8);
+ break;
+ case SST26_CTL_CHECK:
+ return !!(cmd[bpr_size - (bit / 8) - 1] & BIT(bit % 8));
+ }
+
+ return false;
+}
+
+/*
+ * sst26wf016/sst26wf032/sst26wf064 have next block protection:
+ * 4x - 8 KByte blocks - read & write protection bits - upper addresses
+ * 1x - 32 KByte blocks - write protection bits
+ * rest - 64 KByte blocks - write protection bits
+ * 1x - 32 KByte blocks - write protection bits
+ * 4x - 8 KByte blocks - read & write protection bits - lower addresses
+ *
+ * We'll support only per 64k lock/unlock so lower and upper 64 KByte region
+ * will be treated as single block.
+ */
+
+/*
+ * Lock, unlock or check lock status of the flash region of the flash (depending
+ * on the lock_ctl value)
+ */
+static int sst26_lock_ctl(struct spi_flash *flash, u32 ofs, size_t len, enum lock_ctl ctl)
+{
+ u32 i, bpr_ptr, rptr_64k, lptr_64k, bpr_size;
+ bool lower_64k = false, upper_64k = false;
+ u8 cmd, bpr_buff[SST26_MAX_BPR_REG_LEN] = {};
+ int ret;
+
+ /* Check length and offset for 64k alignment */
+ if ((ofs & (SZ_64K - 1)) || (len & (SZ_64K - 1)))
+ return -EINVAL;
+
+ if (ofs + len > flash->size)
+ return -EINVAL;
+
+ /* SST26 family has only 16 Mbit, 32 Mbit and 64 Mbit IC */
+ if (flash->size != SZ_2M &&
+ flash->size != SZ_4M &&
+ flash->size != SZ_8M)
+ return -EINVAL;
+
+ bpr_size = 2 + (flash->size / SZ_64K / 8);
+
+ cmd = SST26_CMD_READ_BPR;
+ ret = spi_flash_read_common(flash, &cmd, 1, bpr_buff, bpr_size);
+ if (ret < 0) {
+ printf("SF: fail to read block-protection register\n");
+ return ret;
+ }
+
+ rptr_64k = min_t(u32, ofs + len , flash->size - SST26_BOUND_REG_SIZE);
+ lptr_64k = max_t(u32, ofs, SST26_BOUND_REG_SIZE);
+
+ upper_64k = ((ofs + len) > (flash->size - SST26_BOUND_REG_SIZE));
+ lower_64k = (ofs < SST26_BOUND_REG_SIZE);
+
+ /* Lower bits in block-protection register are about 64k region */
+ bpr_ptr = lptr_64k / SZ_64K - 1;
+
+ /* Process 64K blocks region */
+ while (lptr_64k < rptr_64k) {
+ if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
+ return EACCES;
+
+ bpr_ptr++;
+ lptr_64k += SZ_64K;
+ }
+
+ /* 32K and 8K region bits in BPR are after 64k region bits */
+ bpr_ptr = (flash->size - 2 * SST26_BOUND_REG_SIZE) / SZ_64K;
+
+ /* Process lower 32K block region */
+ if (lower_64k)
+ if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
+ return EACCES;
+
+ bpr_ptr++;
+
+ /* Process upper 32K block region */
+ if (upper_64k)
+ if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
+ return EACCES;
+
+ bpr_ptr++;
+
+ /* Process lower 8K block regions */
+ for (i = 0; i < SST26_BPR_8K_NUM; i++) {
+ if (lower_64k)
+ if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
+ return EACCES;
+
+ /* In 8K area BPR has both read and write protection bits */
+ bpr_ptr += 2;
+ }
+
+ /* Process upper 8K block regions */
+ for (i = 0; i < SST26_BPR_8K_NUM; i++) {
+ if (upper_64k)
+ if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
+ return EACCES;
+
+ /* In 8K area BPR has both read and write protection bits */
+ bpr_ptr += 2;
+ }
+
+ /* If we check region status we don't need to write BPR back */
+ if (ctl == SST26_CTL_CHECK)
+ return 0;
+
+ cmd = SST26_CMD_WRITE_BPR;
+ ret = spi_flash_write_common(flash, &cmd, 1, bpr_buff, bpr_size);
+ if (ret < 0) {
+ printf("SF: fail to write block-protection register\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int sst26_unlock(struct spi_flash *flash, u32 ofs, size_t len)
+{
+ return sst26_lock_ctl(flash, ofs, len, SST26_CTL_UNLOCK);
+}
+
+static int sst26_lock(struct spi_flash *flash, u32 ofs, size_t len)
+{
+ return sst26_lock_ctl(flash, ofs, len, SST26_CTL_LOCK);
+}
+
+/*
+ * Returns EACCES (positive value) if region is locked, 0 if region is unlocked,
+ * and negative on errors.
+ */
+static int sst26_is_locked(struct spi_flash *flash, u32 ofs, size_t len)
+{
+ /*
+ * is_locked function is used for check before reading or erasing flash
+ * region, so offset and length might be not 64k allighned, so adjust
+ * them to be 64k allighned as sst26_lock_ctl works only with 64k
+ * allighned regions.
+ */
+ ofs -= ofs & (SZ_64K - 1);
+ len = len & (SZ_64K - 1) ? (len & ~(SZ_64K - 1)) + SZ_64K : len;
+
+ return sst26_lock_ctl(flash, ofs, len, SST26_CTL_CHECK);
+}
+
static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
{
struct spi_slave *spi = flash->spi;
@@ -1033,6 +1192,15 @@ int spi_flash_scan(struct spi_flash *flash)
}
#endif
+/* sst26wf series block protection implementation differs from other series */
+#if defined(CONFIG_SPI_FLASH_SST)
+ if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_SST && info->id[1] == 0x26) {
+ flash->flash_lock = sst26_lock;
+ flash->flash_unlock = sst26_unlock;
+ flash->flash_is_locked = sst26_is_locked;
+ }
+#endif
+
/* Compute the flash size */
flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0;
flash->page_size = info->page_size;
--
2.14.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v5 2/2] SF: add support for sst26wf016, sst26wf032, sst26wf064
2018-04-10 11:40 [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
@ 2018-04-10 11:40 ` Eugeniy Paltsev
2018-04-19 11:25 ` [U-Boot] [PATCH v5 0/2] " Jagan Teki
2 siblings, 0 replies; 6+ messages in thread
From: Eugeniy Paltsev @ 2018-04-10 11:40 UTC (permalink / raw)
To: u-boot
This commit adds support for the SST sst26wf016, sst26wf032
and sst26wf064 flash IC.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
Changes v4->v5:
* None.
Changes v3->v4:
* None.
Changes v2->v3:
* None.
Changes v1->v2:
* None.
drivers/mtd/spi/spi_flash_ids.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/mtd/spi/spi_flash_ids.c b/drivers/mtd/spi/spi_flash_ids.c
index b789219e4e..dbb4ac4d32 100644
--- a/drivers/mtd/spi/spi_flash_ids.c
+++ b/drivers/mtd/spi/spi_flash_ids.c
@@ -151,6 +151,9 @@ const struct spi_flash_info spi_flash_ids[] = {
{"sst25wf040", INFO(0xbf2504, 0x0, 64 * 1024, 8, SECT_4K | SST_WR) },
{"sst25wf040b", INFO(0x621613, 0x0, 64 * 1024, 8, SECT_4K) },
{"sst25wf080", INFO(0xbf2505, 0x0, 64 * 1024, 16, SECT_4K | SST_WR) },
+ {"sst26wf016", INFO(0xbf2651, 0x0, 64 * 1024, 32, SECT_4K) },
+ {"sst26wf032", INFO(0xbf2622, 0x0, 64 * 1024, 64, SECT_4K) },
+ {"sst26wf064", INFO(0xbf2643, 0x0, 64 * 1024, 128, SECT_4K) },
#endif
#ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */
{"w25p80", INFO(0xef2014, 0x0, 64 * 1024, 16, 0) },
--
2.14.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
@ 2018-04-12 12:59 ` Eugeniy Paltsev
2018-04-16 13:52 ` Eugeniy Paltsev
1 sibling, 0 replies; 6+ messages in thread
From: Eugeniy Paltsev @ 2018-04-12 12:59 UTC (permalink / raw)
To: u-boot
Hi Jagan,
Maybe you have any comments or remarks about this patch? And if you don't could you please apply it.
Thanks!
On Tue, 2018-04-10 at 14:40 +0300, Eugeniy Paltsev wrote:
> sst26wf flash series block protection implementation differs
> from other SST series, so add specific implementation
> flash_lock/flash_unlock/flash_is_locked functions for sst26wf
> flash ICs.
>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
> ---
> Changes v4->v5:
> * Return EACCES when flash is locked instead of custom define (SF_LOCKED)
> * Add SST26_CTL_* prefix to sst27 lock ops enum.
> * Move all sst26 code inside of existing CONFIG_SPI_FLASH_SST #ifdef.
>
> Changes v3->v4:
> * Make sst26_process_bpr() and sst26_lock_ctl() functions static.
>
> Changes v2->v3:
> * Move SST26 command defenition to sf_internal.h
> * Merge sst26_set_bpr, sst26_clear_bpr and sst26_check_bpr functions
> into single sst26_process_bpr function.
> * Use SF_UNLOCKED/SF_LOCKED instead of magic numbers in
> sst26_lock_ctl()
>
> Changes v1->v2:
> * Use generic defines from linux/sizes.h instead of custom ones.
>
> drivers/mtd/spi/sf_internal.h | 13 ++++
> drivers/mtd/spi/spi_flash.c | 168 ++++++++++++++++++++++++++++++++++++++++++
> 2 files changed, 181 insertions(+)
>
> diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h
> index 839cdbe1b0..614a293234 100644
> --- a/drivers/mtd/spi/sf_internal.h
> +++ b/drivers/mtd/spi/sf_internal.h
> @@ -87,6 +87,19 @@ enum spi_nor_option_flags {
>
> /* SST specific */
> #ifdef CONFIG_SPI_FLASH_SST
> +#define SST26_CMD_READ_BPR 0x72
> +#define SST26_CMD_WRITE_BPR 0x42
> +
> +#define SST26_BPR_8K_NUM 4
> +#define SST26_MAX_BPR_REG_LEN (18 + 1)
> +#define SST26_BOUND_REG_SIZE ((32 + SST26_BPR_8K_NUM * 8) * SZ_1K)
> +
> +enum lock_ctl {
> + SST26_CTL_LOCK,
> + SST26_CTL_UNLOCK,
> + SST26_CTL_CHECK
> +};
> +
> # define CMD_SST_BP 0x02 /* Byte Program */
> # define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */
>
> diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
> index 2e61685d3e..5e5bd5d533 100644
> --- a/drivers/mtd/spi/spi_flash.c
> +++ b/drivers/mtd/spi/spi_flash.c
> @@ -16,6 +16,7 @@
> #include <spi.h>
> #include <spi_flash.h>
> #include <linux/log2.h>
> +#include <linux/sizes.h>
> #include <dma.h>
>
> #include "sf_internal.h"
> @@ -541,6 +542,164 @@ int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset,
> }
>
> #ifdef CONFIG_SPI_FLASH_SST
> +static bool sst26_process_bpr(u32 bpr_size, u8 *cmd, u32 bit, enum lock_ctl ctl)
> +{
> + switch (ctl) {
> + case SST26_CTL_LOCK:
> + cmd[bpr_size - (bit / 8) - 1] |= BIT(bit % 8);
> + break;
> + case SST26_CTL_UNLOCK:
> + cmd[bpr_size - (bit / 8) - 1] &= ~BIT(bit % 8);
> + break;
> + case SST26_CTL_CHECK:
> + return !!(cmd[bpr_size - (bit / 8) - 1] & BIT(bit % 8));
> + }
> +
> + return false;
> +}
> +
> +/*
> + * sst26wf016/sst26wf032/sst26wf064 have next block protection:
> + * 4x - 8 KByte blocks - read & write protection bits - upper addresses
> + * 1x - 32 KByte blocks - write protection bits
> + * rest - 64 KByte blocks - write protection bits
> + * 1x - 32 KByte blocks - write protection bits
> + * 4x - 8 KByte blocks - read & write protection bits - lower addresses
> + *
> + * We'll support only per 64k lock/unlock so lower and upper 64 KByte region
> + * will be treated as single block.
> + */
> +
> +/*
> + * Lock, unlock or check lock status of the flash region of the flash (depending
> + * on the lock_ctl value)
> + */
> +static int sst26_lock_ctl(struct spi_flash *flash, u32 ofs, size_t len, enum lock_ctl ctl)
> +{
> + u32 i, bpr_ptr, rptr_64k, lptr_64k, bpr_size;
> + bool lower_64k = false, upper_64k = false;
> + u8 cmd, bpr_buff[SST26_MAX_BPR_REG_LEN] = {};
> + int ret;
> +
> + /* Check length and offset for 64k alignment */
> + if ((ofs & (SZ_64K - 1)) || (len & (SZ_64K - 1)))
> + return -EINVAL;
> +
> + if (ofs + len > flash->size)
> + return -EINVAL;
> +
> + /* SST26 family has only 16 Mbit, 32 Mbit and 64 Mbit IC */
> + if (flash->size != SZ_2M &&
> + flash->size != SZ_4M &&
> + flash->size != SZ_8M)
> + return -EINVAL;
> +
> + bpr_size = 2 + (flash->size / SZ_64K / 8);
> +
> + cmd = SST26_CMD_READ_BPR;
> + ret = spi_flash_read_common(flash, &cmd, 1, bpr_buff, bpr_size);
> + if (ret < 0) {
> + printf("SF: fail to read block-protection register\n");
> + return ret;
> + }
> +
> + rptr_64k = min_t(u32, ofs + len , flash->size - SST26_BOUND_REG_SIZE);
> + lptr_64k = max_t(u32, ofs, SST26_BOUND_REG_SIZE);
> +
> + upper_64k = ((ofs + len) > (flash->size - SST26_BOUND_REG_SIZE));
> + lower_64k = (ofs < SST26_BOUND_REG_SIZE);
> +
> + /* Lower bits in block-protection register are about 64k region */
> + bpr_ptr = lptr_64k / SZ_64K - 1;
> +
> + /* Process 64K blocks region */
> + while (lptr_64k < rptr_64k) {
> + if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
> + return EACCES;
> +
> + bpr_ptr++;
> + lptr_64k += SZ_64K;
> + }
> +
> + /* 32K and 8K region bits in BPR are after 64k region bits */
> + bpr_ptr = (flash->size - 2 * SST26_BOUND_REG_SIZE) / SZ_64K;
> +
> + /* Process lower 32K block region */
> + if (lower_64k)
> + if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
> + return EACCES;
> +
> + bpr_ptr++;
> +
> + /* Process upper 32K block region */
> + if (upper_64k)
> + if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
> + return EACCES;
> +
> + bpr_ptr++;
> +
> + /* Process lower 8K block regions */
> + for (i = 0; i < SST26_BPR_8K_NUM; i++) {
> + if (lower_64k)
> + if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
> + return EACCES;
> +
> + /* In 8K area BPR has both read and write protection bits */
> + bpr_ptr += 2;
> + }
> +
> + /* Process upper 8K block regions */
> + for (i = 0; i < SST26_BPR_8K_NUM; i++) {
> + if (upper_64k)
> + if (sst26_process_bpr(bpr_size, bpr_buff, bpr_ptr, ctl))
> + return EACCES;
> +
> + /* In 8K area BPR has both read and write protection bits */
> + bpr_ptr += 2;
> + }
> +
> + /* If we check region status we don't need to write BPR back */
> + if (ctl == SST26_CTL_CHECK)
> + return 0;
> +
> + cmd = SST26_CMD_WRITE_BPR;
> + ret = spi_flash_write_common(flash, &cmd, 1, bpr_buff, bpr_size);
> + if (ret < 0) {
> + printf("SF: fail to write block-protection register\n");
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int sst26_unlock(struct spi_flash *flash, u32 ofs, size_t len)
> +{
> + return sst26_lock_ctl(flash, ofs, len, SST26_CTL_UNLOCK);
> +}
> +
> +static int sst26_lock(struct spi_flash *flash, u32 ofs, size_t len)
> +{
> + return sst26_lock_ctl(flash, ofs, len, SST26_CTL_LOCK);
> +}
> +
> +/*
> + * Returns EACCES (positive value) if region is locked, 0 if region is unlocked,
> + * and negative on errors.
> + */
> +static int sst26_is_locked(struct spi_flash *flash, u32 ofs, size_t len)
> +{
> + /*
> + * is_locked function is used for check before reading or erasing flash
> + * region, so offset and length might be not 64k allighned, so adjust
> + * them to be 64k allighned as sst26_lock_ctl works only with 64k
> + * allighned regions.
> + */
> + ofs -= ofs & (SZ_64K - 1);
> + len = len & (SZ_64K - 1) ? (len & ~(SZ_64K - 1)) + SZ_64K : len;
> +
> + return sst26_lock_ctl(flash, ofs, len, SST26_CTL_CHECK);
> +}
> +
> static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf)
> {
> struct spi_slave *spi = flash->spi;
> @@ -1033,6 +1192,15 @@ int spi_flash_scan(struct spi_flash *flash)
> }
> #endif
>
> +/* sst26wf series block protection implementation differs from other series */
> +#if defined(CONFIG_SPI_FLASH_SST)
> + if (JEDEC_MFR(info) == SPI_FLASH_CFI_MFR_SST && info->id[1] == 0x26) {
> + flash->flash_lock = sst26_lock;
> + flash->flash_unlock = sst26_unlock;
> + flash->flash_is_locked = sst26_is_locked;
> + }
> +#endif
> +
> /* Compute the flash size */
> flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0;
> flash->page_size = info->page_size;
--
Eugeniy Paltsev
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
2018-04-12 12:59 ` Eugeniy Paltsev
@ 2018-04-16 13:52 ` Eugeniy Paltsev
1 sibling, 0 replies; 6+ messages in thread
From: Eugeniy Paltsev @ 2018-04-16 13:52 UTC (permalink / raw)
To: u-boot
Hi Jagan!
Any comments?
On Tue, 2018-04-10 at 14:40 +0300, Eugeniy Paltsev wrote:
> sst26wf flash series block protection implementation differs
> from other SST series, so add specific implementation
> flash_lock/flash_unlock/flash_is_locked functions for sst26wf
> flash ICs.
>
> Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
> ---
> Changes v4->v5:
> * Return EACCES when flash is locked instead of custom define (SF_LOCKED)
> * Add SST26_CTL_* prefix to sst27 lock ops enum.
> * Move all sst26 code inside of existing CONFIG_SPI_FLASH_SST #ifdef.
>
> Changes v3->v4:
> * Make sst26_process_bpr() and sst26_lock_ctl() functions static.
>
> Changes v2->v3:
> * Move SST26 command defenition to sf_internal.h
> * Merge sst26_set_bpr, sst26_clear_bpr and sst26_check_bpr functions
> into single sst26_process_bpr function.
> * Use SF_UNLOCKED/SF_LOCKED instead of magic numbers in
> sst26_lock_ctl()
>
> Changes v1->v2:
> * Use generic defines from linux/sizes.h instead of custom ones.
>
> diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
[snip]
--
Eugeniy Paltsev
^ permalink raw reply [flat|nested] 6+ messages in thread
* [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064
2018-04-10 11:40 [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 2/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
@ 2018-04-19 11:25 ` Jagan Teki
2 siblings, 0 replies; 6+ messages in thread
From: Jagan Teki @ 2018-04-19 11:25 UTC (permalink / raw)
To: u-boot
On Tue, Apr 10, 2018 at 5:10 PM, Eugeniy Paltsev
<Eugeniy.Paltsev@synopsys.com> wrote:
> Add support for the SST sst26wf016, sst26wf032 and sst26wf064 flash IC:
>
> sst26wf*** flash series block protection implementation differs from other
> SST series, so we add implementation for sst26wf*** lock/unlock/is_locked
> functions.
>
> Add sst26wf016, sst26wf032 and sst26wf064 flash IC info to spi_flash_ids list.
>
> Changes v4->v5:
> * Return EACCES when flash is locked instead of custom define (SF_LOCKED)
> * Add SST26_CTL_* prefix to sst27 lock ops enum.
> * Move all sst26 code inside of existing CONFIG_SPI_FLASH_SST #ifdef.
>
> Changes v3->v4:
> * Make sst26_process_bpr() and sst26_lock_ctl() functions static.
>
> Changes v2->v3:
> * Move SST26 command defenition to sf_internal.h
> * Merge sst26_set_bpr, sst26_clear_bpr and sst26_check_bpr functions
> into single sst26_process_bpr function.
> * Use SF_UNLOCKED/SF_LOCKED instead of magic numbers in
> sst26_lock_ctl()
>
> Changes v1->v2:
> * Use generic defines from linux/sizes.h instead of custom ones.
>
> Eugeniy Paltsev (2):
> SPI Flash: add support of sst26wf* flash ICs protection ops
> SF: add support for sst26wf016, sst26wf032, sst26wf064
Applied to u-boot-spi/master
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2018-04-19 11:25 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-04-10 11:40 [U-Boot] [PATCH v5 0/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 1/2] SPI Flash: add support of sst26wf* flash ICs protection ops Eugeniy Paltsev
2018-04-12 12:59 ` Eugeniy Paltsev
2018-04-16 13:52 ` Eugeniy Paltsev
2018-04-10 11:40 ` [U-Boot] [PATCH v5 2/2] SF: add support for sst26wf016, sst26wf032, sst26wf064 Eugeniy Paltsev
2018-04-19 11:25 ` [U-Boot] [PATCH v5 0/2] " Jagan Teki
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