Firmware/MNRS-BM-BSP
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adds board specific read for iss, changes read implementation

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This commit is contained in:
Eyck-Alexander Jentzsch 2025-01-06 20:21:21 +01:00
parent d9692688b6
commit cef1036169
2 changed files with 23 additions and 56 deletions
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19
env/iss/bsp_read.c vendored Normal file
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#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
ssize_t _bsp_read(int fd, void *ptr, size_t len) {
uint8_t *current = (uint8_t *)ptr;
volatile uint32_t *uart_rx = (uint32_t *)0xFFFF0000;
ssize_t result = 0;
if (isatty(fd)) {
for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len);
current++) {
*current = *uart_rx;
result++;
}
return result;
}
return EOF;
}

60
libwrap/sys/read.c
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@ -1,62 +1,10 @@
/* See LICENSE of license details. */
#include <errno.h>
#include <stdint.h>
#include <sys/types.h>
#include "weak_under_alias.h"
#include <unistd.h>
#include "platform.h"
#include "stub.h"
#include "weak_under_alias.h"
#if defined(SEMIHOSTING)
#include "semihosting.h"
#endif
extern ssize_t _bsp_read(int fd, void *ptr, size_t len);
ssize_t __wrap_read(int fd, void *ptr, size_t len) {
uint8_t *current = (uint8_t *)ptr;
#if defined(SEMIHOSTING)
int i = sh_read(current, fd, len);
return i;
#endif
#if defined(BOARD_hifive1)
volatile uint32_t *uart_rx = (uint32_t *)(UART0_CTRL_ADDR + UART_REG_RXFIFO);
volatile uint8_t *uart_rx_cnt =
(uint8_t *)(UART0_CTRL_ADDR + UART_REG_RXCTRL + 2);
#elif defined(BOARD_iss)
volatile uint32_t *uart_rx = (uint32_t *)0xFFFF0000;
#elif defined(BOARD_TGCP)
// TODO: implement
#elif !defined(BOARD_ehrenberg) && !defined(BOARD_tgc_vp)
volatile uint32_t *uart_rx = (uint32_t *)(UART0_BASE_ADDR + UART_REG_RXFIFO);
volatile uint8_t *uart_rx_cnt =
(uint8_t *)(UART0_BASE_ADDR + UART_REG_RXCTRL + 2);
#endif
ssize_t result = 0;
if (isatty(fd)) {
#if defined(BOARD_ehrenberg) || defined(BOARD_tgc_vp)
for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len) &&
(get_uart_rx_tx_reg_rx_avail(uart) > 0);
current++) {
*current = uart_read(uart);
result++;
}
#elif defined(BOARD_iss)
for (current = (uint8_t *)ptr; (current < ((uint8_t *)ptr) + len);
current++) {
*current = *uart_rx;
result++;
}
#elif defined(BOARD_TGCP)
// TODO: implement
#else
for (current = (uint8_t *)ptr;
(current < ((uint8_t *)ptr) + len) && (*uart_rx_cnt > 0); current++) {
*current = *uart_rx;
result++;
}
#endif
return result;
}
return _stub(EBADF);
return _bsp_read(fd, ptr, len);
}
weak_under_alias(read);