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arch/arm/src/samv7: add flash progmem erasestate ioctl support

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Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>
This commit is contained in:
Petro Karashchenko 2021-11-24 14:28:59 +02:00 committed by Gustavo Henrique Nihei
parent 134b2e6ec9
commit 0d9425676d
4 changed files with 28 additions and 6 deletions
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7
arch/arm/src/samv7/Kconfig
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@ -816,6 +816,13 @@ config SAMV7_PROGMEM_NSECTORS
flash memory that will be reserved for use with by the interfaces
prototyped in include/nuttx/progmem.h
config SAMV7_PROGMEM_ERASESTATE
bool "Flash progmem erasestate ioctl support"
default y
select ARCH_HAVE_PROGMEM_ERASESTATE
---help---
Add progmem erasestate ioctl command.
endif # SAMV7_PROGMEM
menu "SDRAM Configuration"

21
arch/arm/src/samv7/sam_progmem.c
View File

@ -137,6 +137,8 @@
#define SAMV7_PROGMEM_ENDSEC (SAMV7_TOTAL_NSECTORS)
#define SAMV7_PROGMEM_STARTSEC (SAMV7_PROGMEM_ENDSEC - CONFIG_SAMV7_PROGMEM_NSECTORS)
#define SAMV7_PROGMEM_ERASEDVAL (0xff)
/* Misc stuff */
#ifndef MIN
@ -445,13 +447,13 @@ ssize_t up_progmem_ispageerased(size_t cluster)
address = (cluster << SAMV7_CLUSTER_SHIFT) + SAMV7_PROGMEM_START;
up_flush_dcache(address, address + SAMV7_CLUSTER_SIZE);
/* Verify that the cluster is erased (i.e., all 0xff) */
/* Verify that the cluster is erased (i.e., all SAMV7_PROGMEM_ERASEDVAL) */
for (nleft = SAMV7_CLUSTER_SIZE, nwritten = 0;
nleft > 0;
nleft--, address++)
{
if (getreg8(address) != 0xff)
if (getreg8(address) != SAMV7_PROGMEM_ERASEDVAL)
{
nwritten++;
}
@ -469,7 +471,7 @@ ssize_t up_progmem_ispageerased(size_t cluster)
* Input Parameters:
* address - Address with or without flash offset
* buffer - Pointer to buffer
* buflen - Number of bytes to write
* buflen - Number of bytes to write
*
* Returned Value:
* Bytes written or negative value on error. The following errors are
@ -608,3 +610,16 @@ ssize_t up_progmem_write(size_t address, const void *buffer, size_t buflen)
page_buffer_unlock();
return written;
}
/****************************************************************************
* Name: up_progmem_erasestate
*
* Description:
* Return a byte that represents flash erased value state
*
****************************************************************************/
ssize_t up_progmem_erasestate(void)
{
return SAMV7_PROGMEM_ERASEDVAL;
}

4
arch/arm/src/stm32h7/Kconfig
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@ -334,12 +334,12 @@ config STM32H7_PROGMEM
obtain an uniform flash memory mapping.
config STM32H7_PROGMEM_ERASESTATE
bool "Flash progmem erasestate ictl support"
bool "Flash progmem erasestate ioctl support"
depends on STM32H7_PROGMEM
default y
select ARCH_HAVE_PROGMEM_ERASESTATE
---help---
Add progmem erasestate ictl command.
Add progmem erasestate ioctl command.
menu "STM32H7 Peripheral Selection"

2
include/nuttx/progmem.h
View File

@ -238,7 +238,7 @@ ssize_t up_progmem_read(size_t addr, FAR void *buf, size_t count);
* Name: up_progmem_erasestate
*
* Description:
* Return value of erease state.
* Return value of erase state.
*
****************************************************************************/