Firmware/MNRS-BM-BSP
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uses tohost in bsp_write

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This commit is contained in:
Hongyu Liu 2025-03-11 11:42:28 +01:00
parent 8bb7365819
commit 3042e0e124
1 changed files with 24 additions and 4 deletions
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28
env/iss/bsp_write.c vendored
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@ -5,12 +5,32 @@
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
extern volatile uint32_t tohost;
ssize_t _bsp_write(int fd, const void *ptr, size_t len) {
const uint8_t *current = (const uint8_t *)ptr;
// char string[] = "hello world in bsp_write";
// uint32_t payload_1[4] = {64, 0, (uintptr_t)string, strlen(string)};
// tohost = (uint32_t)payload_1;
// const uint32_t *current = (const uint32_t *)ptr;
if (isatty(fd)) {
for (size_t jj = 0; jj < len; jj++) {
*((uint32_t *)0xFFFF0000) = current[jj];
}
// uint32_t payload[4] = {64, 0, (uint32_t)((uint32_t *)ptr), len};
// tohost = (uint32_t)payload;
uint64_t payload[4] = {64, 0, (uintptr_t)((uint32_t *)ptr), len};
tohost = (uint32_t)payload;
/*
// accoring to my understading this part is used fot uart wrrite for later
for (size_t jj = 0; jj < len; jj++) {
*((uint32_t *)0xFFFF0000) = current[jj];
}
*/
return len;
}