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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <encoding.h>
#include <platform.h>
#include <eos.h>
#include <soc/timer.h>
#include <dev/flash.h>
#include <eve/eve.h>
#include <eve/eve_kbd.h>
#include <eve/eve_font.h>
#include <eve/screen/window.h>
#include <eve/screen/page.h>
#include <eve/screen/form.h>
#include "app/app.h"
#include "app/status.h"
#include "flash.h"
static const uint8_t magic[] =
{0x2D, 0xC0, 0x3B, 0x5F, 0xEA, 0xE3, 0x1A, 0x3A, 0x83, 0x11, 0x6A, 0x33, 0x98, 0x46, 0x1C, 0x47};
#define ACK 0x05
#define NACK 0x0A
#define BLK_SIZE 256
__attribute__ ((section (".itim")))
static uint32_t crc32x(unsigned char *buf, size_t len, uint32_t crc) {
int i;
crc = ~crc;
while (len--) {
crc ^= *buf++;
for (i=0; i<8; i++) {
uint32_t t = ~((crc & 1) - 1);
crc = (crc >> 1) ^ (0xEDB88320 & t);
}
}
return ~crc;
}
__attribute__ ((section (".itim")))
void flash_write(void) {
volatile uint32_t r;
uint32_t crc32, crc32_b;
uint32_t addr;
uint8_t buf[BLK_SIZE + 2 * sizeof(uint32_t)];
int i;
clear_csr(mstatus, MSTATUS_MIE);
SPI0_REG(SPI_REG_FCTRL) = 0;
SPI0_REG(SPI_REG_FMT) &= ~SPI_FMT_DIR(SPI_DIR_TX);
do {
for (i=0; i<sizeof(buf); i++) {
while ((r = UART0_REG(UART_REG_RXFIFO)) & 0x80000000);
buf[i] = r;
}
addr = 0;
addr |= (uint32_t)buf[0] << 24;
addr |= (uint32_t)buf[1] << 16;
addr |= (uint32_t)buf[2] << 8;
addr |= (uint32_t)buf[3];
crc32_b = 0;
crc32_b |= (uint32_t)buf[BLK_SIZE + 4] << 24;
crc32_b |= (uint32_t)buf[BLK_SIZE + 5] << 16;
crc32_b |= (uint32_t)buf[BLK_SIZE + 6] << 8;
crc32_b |= (uint32_t)buf[BLK_SIZE + 7];
crc32 = crc32x(buf, BLK_SIZE + sizeof(uint32_t), 0xffffffff);
if (crc32 != crc32_b) {
*buf = NACK;
goto write_rep;
}
if (addr != -1) {
if (addr % 4096 == 0) {
eos_flash_wren();
eos_flash_ser(addr);
eos_flash_wip();
}
eos_flash_wren();
eos_flash_pp(addr, buf + sizeof(uint32_t));
eos_flash_wip();
}
*buf = ACK;
write_rep:
while (UART0_REG(UART_REG_TXFIFO) & 0x80000000);
UART0_REG(UART_REG_TXFIFO) = *buf;
} while (addr != -1);
while(1);
}
void flash_write_init(void) {
volatile uint32_t r;
uint8_t buf[sizeof(magic)];
int i;
while (!(UART0_REG(UART_REG_RXFIFO) & 0x80000000));
app_status_set_msg("READY!");
eve_window_root_draw(app_root());
for (i=0; i<sizeof(magic); i++) {
while ((r = UART0_REG(UART_REG_RXFIFO)) & 0x80000000);
buf[i] = r;
}
if (memcmp(buf, magic, sizeof(magic)) == 0) {
*buf = ACK;
app_status_set_msg("FLASH START");
} else {
*buf = NACK;
app_status_set_msg("FLASH FAIL");
}
eve_window_root_draw(app_root());
while (UART0_REG(UART_REG_TXFIFO) & 0x80000000);
UART0_REG(UART_REG_TXFIFO) = *buf;
}
int flash_app(EVEWindow *window, EVEViewStack *stack) {
EVEFormSpec spec[] = {
APP_SPACERW(1,1),
};
EVEPage *page = eve_form_create(window, stack, spec, APP_SPEC_SIZE(spec), flash_uievt, flash_close);
if (page == NULL) return EVE_ERR_NOMEM;
return EVE_OK;
}
int flash_uievt(EVEPage *page, uint16_t evt, void *param) {
int ret = 0;
switch (evt) {
case EVE_UIEVT_GEST_TOUCH: {
flash_write_init();
flash_write();
break;
}
default: {
ret = eve_form_uievt(page, evt, param);
break;
}
}
return ret;
}
void flash_close(EVEPage *page) {
eve_form_destroy(page);
}
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