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fw: Break out htif functions for qemu to separate files

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Daniel Jobson 2024-09-04 10:02:06 +02:00
parent 53e655c443
commit f1a72191f6
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GPG key ID: 3707A9DBF4BB8F1A
8 changed files with 135 additions and 109 deletions
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90
hw/application_fpga/fw/tk1/lib.c
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@ -8,96 +8,6 @@
#include <stddef.h>
#include <stdint.h>
#ifdef QEMU_CONSOLE
struct {
uint32_t arr[2];
} static volatile tohost __attribute__((section(".htif")));
struct {
uint32_t arr[2];
} /*@unused@*/ static volatile fromhost __attribute__((section(".htif")));
static void htif_send(uint8_t dev, uint8_t cmd, int64_t data)
{
/* endian neutral encoding with ordered 32-bit writes */
union {
uint32_t arr[2];
uint64_t val;
} encode = {.val = (uint64_t)dev << 56 | (uint64_t)cmd << 48 | data};
tohost.arr[0] = encode.arr[0];
tohost.arr[1] = encode.arr[1];
}
static void htif_set_tohost(uint8_t dev, uint8_t cmd, int64_t data)
{
/* send data with specified device and command */
while (tohost.arr[0]) {
#ifndef S_SPLINT_S
asm volatile("" : : "r"(fromhost.arr[0]));
asm volatile("" : : "r"(fromhost.arr[1]));
#endif
}
htif_send(dev, cmd, data);
}
static void htif_putchar(char ch)
{
htif_set_tohost((uint8_t)1, (uint8_t)1, (int64_t)ch & 0xff);
}
void htif_puts(const char *s)
{
while (*s != '\0')
htif_putchar(*s++);
}
void htif_hexdump(void *buf, int len)
{
uint8_t *byte_buf = (uint8_t *)buf;
for (int i = 0; i < len; i++) {
htif_puthex(byte_buf[i]);
if (i % 2 == 1) {
(void)htif_putchar(' ');
}
if (i != 1 && i % 16 == 1) {
htif_lf();
}
}
htif_lf();
}
void htif_putc(char ch)
{
htif_putchar(ch);
}
void htif_lf(void)
{
htif_putchar('\n');
}
void htif_puthex(uint8_t c)
{
unsigned int upper = (c >> 4) & 0xf;
unsigned int lower = c & 0xf;
htif_putchar(upper < 10 ? '0' + upper : 'a' - 10 + upper);
htif_putchar(lower < 10 ? '0' + lower : 'a' - 10 + lower);
}
void htif_putinthex(const uint32_t n)
{
uint8_t *buf = (uint8_t *)&n;
htif_puts("0x");
for (int i = 3; i > -1; i--) {
htif_puthex(buf[i]);
}
}
#endif
void *memset(void *dest, int c, unsigned n)
{
uint8_t *s = dest;