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spiflash: use SoC defines, add write_to_flash function

This commit is contained in:
Sebastien Bourdeauducq 2015-04-27 13:42:32 +08:00
parent 0b1a2e1022
commit 1d9771f574
3 changed files with 39 additions and 18 deletions
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1
software/include/base/spiflash.h
View File

@ -3,5 +3,6 @@
void write_to_flash_page(unsigned int addr, unsigned char *c, unsigned int len);
void erase_flash_sector(unsigned int addr);
void write_to_flash(unsigned int addr, unsigned char *c, unsigned int len);
#endif /* __SPIFLASH_H */

54
software/libbase/spiflash.c
View File

@ -1,25 +1,20 @@
#include <generated/csr.h>
#if (defined CSR_SPIFLASH_BASE && defined SPIFLASH_PAGE_SIZE)
#include <spiflash.h>
#ifdef CSR_SPIFLASH_BASE
#define PAGE_PROGRAM_CMD (0x02)
#define WRDI_CMD (0x04)
#define RDSR_CMD (0x05)
#define WREN_CMD (0x06)
#define SE_CMD (0x20)
#define PAGE_PROGRAM_CMD (0x02)
#define WRDI_CMD (0x04)
#define RDSR_CMD (0x05)
#define WREN_CMD (0x06)
#define SE_CMD (0x20)
#define BITBANG_CLK (1 << 1)
#define BITBANG_CLK (1 << 1)
#define BITBANG_CS_N (1 << 2)
#define BITBANG_DQ_INPUT (1 << 3)
#define SR_WIP (1)
#define PAGE_SIZE (256)
#define PAGE_MASK (PAGE_SIZE - 1)
#define SECTOR_SIZE (4096)
#define SECTOR_MASK (SECTOR_SIZE - 1)
#define SR_WIP (1)
static void flash_write_byte(unsigned char b);
static void flash_write_addr(unsigned int addr);
@ -76,7 +71,7 @@ static void wait_for_device_ready(void)
void erase_flash_sector(unsigned int addr)
{
unsigned int sector_addr = addr & ~(SECTOR_MASK);
unsigned int sector_addr = addr & ~(SPIFLASH_SECTOR_SIZE - 1);
spiflash_bitbang_en_write(1);
@ -98,8 +93,8 @@ void write_to_flash_page(unsigned int addr, unsigned char *c, unsigned int len)
{
unsigned int i;
if(len > PAGE_SIZE)
len = PAGE_SIZE;
if(len > SPIFLASH_PAGE_SIZE)
len = SPIFLASH_PAGE_SIZE;
spiflash_bitbang_en_write(1);
@ -120,4 +115,27 @@ void write_to_flash_page(unsigned int addr, unsigned char *c, unsigned int len)
spiflash_bitbang_en_write(0);
}
#endif
#define SPIFLASH_PAGE_MASK (SPIFLASH_PAGE_SIZE - 1)
void write_to_flash(unsigned int addr, unsigned char *c, unsigned int len)
{
unsigned int written = 0;
if(addr & SPIFLASH_PAGE_MASK) {
written = min(SPIFLASH_PAGE_SIZE - (addr & SPIFLASH_PAGE_MASK), len);
write_to_flash_page(addr, c, written);
c += written;
addr += written;
len -= written;
}
while(len > 0) {
written = min(len, SPIFLASH_PAGE_SIZE);
write_to_flash_page(addr, c, written);
c += written;
addr += written;
len -= written;
}
}
#endif /* CSR_SPIFLASH_BASE && SPIFLASH_PAGE_SIZE */

2
targets/kc705.py
View File

@ -98,6 +98,8 @@ class BaseSoC(SDRAMSoC):
i_CLK=0, i_GSR=0, i_GTS=0, i_KEYCLEARB=0, i_PACK=0,
i_USRCCLKO=spiflash_pads.clk, i_USRCCLKTS=0, i_USRDONEO=1, i_USRDONETS=1)
self.submodules.spiflash = spiflash.SpiFlash(spiflash_pads, dummy=11, div=2)
self.add_constant("SPIFLASH_PAGE_SIZE", 256)
self.add_constant("SPIFLASH_SECTOR_SIZE", 0x10000)
self.flash_boot_address = 0xb00000
self.register_rom(self.spiflash.bus)