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10#include <linux/console.h>
11#include <linux/init.h>
12#include <linux/serial_core.h>
13
14static void sim_write(struct console *con, const char *s, unsigned n)
15{
16 register const char *_ptr __asm__("er1") = s;
17 register const unsigned _len __asm__("er2") = n;
18
19 __asm__("sub.l er0,er0\n\t"
20 "inc.l #1,er0\n\t"
21 ".byte 0x5e,0x00,0x00,0xc7\n\t"
22 : : "g"(_ptr), "g"(_len):"er0");
23}
24
25static int __init sim_setup(struct earlycon_device *device, const char *opt)
26{
27 device->con->write = sim_write;
28 return 0;
29}
30
31EARLYCON_DECLARE(h8sim, sim_setup);
32