int debug_uart_init(struct mem_map *mem, physaddr_t base, size_t len)
{
struct region *r;
struct uart *u;
const char *sock = getenv("OLDLAND_UART_SOCK");
u = malloc(sizeof(*u));
assert(u);
if (!sock) {
u->fd = open("uart_tx.txt", O_WRONLY | O_CREAT | O_NONBLOCK,
0600);
assert(u->fd >= 0);
} else {
struct sockaddr_un addr;
int len;
u->fd = socket(AF_UNIX, SOCK_STREAM, 0);
assert(u->fd >= 0);
addr.sun_family = AF_UNIX;
strncpy(addr.sun_path, sock, sizeof(addr.sun_path));
addr.sun_path[sizeof(addr.sun_path) - 1] = '\0';
len = strlen(addr.sun_path) + sizeof(addr.sun_family);
if (connect(u->fd, (struct sockaddr *)&addr, len) < 0)
die("failed to connect to uart socket %s\n", sock);
}
r = mem_map_region_add(mem, base, len, &uart_io_ops, u);
assert(r != NULL);
return 0;
}
int ram_init(struct mem_map *mem, physaddr_t base, size_t len,
const char *init_contents)
{
struct region *r;
void *ram;
assert(mem != NULL);
ram = mmap(NULL, len, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
assert(ram != MAP_FAILED);
r = mem_map_region_add(mem, base, len, &ram_io_ops, ram,
MEM_MAPF_CACHEABLE);
assert(r != NULL);
if (init_contents) {
ssize_t br;
int fd = open(init_contents, O_RDONLY);
assert(fd >= 0);
br = read(fd, ram, len);
assert(br >= 0);
debug("read %zd bytes into RAM @%08x from %s\n", br, base,
init_contents);
close(fd);
}
return 0;
}
int sdram_ctrl_init(struct mem_map *mem, physaddr_t base, size_t len)
{
struct region *r = mem_map_region_add(mem, base, len, &sdram_ctrl_ops,
NULL, 0);
assert(r != NULL);
return 0;
}
int rom_init(struct mem_map *mem, physaddr_t base, size_t len,
const char *filename)
{
void *rom;
struct region *r;
int fd = open(filename, O_RDONLY);
assert(fd >= 0);
rom = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
assert(rom != MAP_FAILED);
r = mem_map_region_add(mem, base, len, &rom_io_ops, rom,
MEM_MAPF_CACHEABLE);
assert(r != NULL);
return 0;
}
struct spimaster *spimaster_init(struct mem_map *mem, physaddr_t base,
struct spislave **slaves, size_t nr_slaves)
{
struct region *r;
struct spimaster *master;
master = calloc(1, sizeof(*master));
assert(master);
master->slaves = slaves;
master->nr_slaves = nr_slaves;
assert(nr_slaves <= sizeof(unsigned int) * 8);
r = mem_map_region_add(mem, base, 16384, &spimaster_ops, master, 0);
assert(r);
return master;
}
