Could you please share your flash driver with me?
In my code, my flash is accessed via a handler defined in Xilinx BSP.
typedef struct {
rtems_jffs2_flash_control super;
XQspiPs *flash_instance;
} flash_control;
static flash_control *get_flash_control(rtems_jffs2_flash_control *super) {
return (flash_control *)super;
}
static int flash_read(
rtems_jffs2_flash_control *super,
uint32_t offset,
unsigned char *buffer,
size_t length) {
flash_control *self = get_flash_control(super);
XQspiPs *flash_handle = self->flash_instance;
FlashRead(flash_handle, offset, length, QUAD_READ_CMD, temp_buffer, buffer);
return S25FL256S_SUCCESS;
}
static int flash_write(
rtems_jffs2_flash_control *super,
uint32_t offset,
unsigned char *buffer,
size_t length) {
flash_control *self = get_flash_control(super);
XQspiPs *flash_handle = self->flash_instance;
uint32_t num = length / S25FL256S_PAGE_SIZE;
uint32_t remaining = length % S25FL256S_PAGE_SIZE;
uint32_t written;
for (written = 0; written < num; written++) {
FlashWrite(flash_handle, beginning + written*S25FL256S_PAGE_SIZE, \
S25FL256S_PAGE_SIZE, WRITE_CMD, \
buffer + written*S25FL256S_PAGE_SIZE);
}
if (remaining) {
FlashWrite(flash_handle, beginning + num*S25FL256S_PAGE_SIZE, \
remaining, WRITE_CMD, buffer + num*S25FL256S_PAGE_SIZE);
}
return S25FL256S_SUCCESS;
}
where, my FlashRead and FlashWrite functions will invoke the functions defined
in Xilinx BSP to transfer data from/into flash.
I do not know where the problem is...
Best wishes,
xuelin.t...@qkmtech.com
From: Chris Johns
Date: 2017-10-23 12:19
To: xuelin.t...@qkmtech.com; Sebastian Huber
CC: users@rtems.org
Subject: Re: Filesystem in RTEMS
On 23/10/2017 12:53, xuelin.t...@qkmtech.com wrote:
> Yes, Everything is going well, if I erase the flash before use.
>
> But, I need to store some files into flash, and reuse them when I restart my
> system. I can not erase the flash every time.
Oh I see what you are saying.
I am using the JFFS2 on a Zynq with a 64M byte SPI flash and seeing no issues. I
suggest you check your flash driver and make sure you are writing to the flash
correctly.
Chris
_______________________________________________
users mailing list
users@rtems.org
http://lists.rtems.org/mailman/listinfo/users
