/**
* Called plainly from assembler code
*
* @note The C environment isn't initialized yet
*/
void __bare_init main_entry(void *fdt, u32 fdt_size)
{
unsigned long malloc_start, malloc_end;
/* clear the BSS first */
memset(__bss_start, 0x00, __bss_stop - __bss_start);
cpu_probe();
if (cpu_has_4k_cache) {
extern void r4k_cache_init(void);
r4k_cache_init();
}
trap_init();
malloc_end = _stext;
if (MALLOC_SIZE > 0)
malloc_start = malloc_end - MALLOC_SIZE;
else
malloc_start = malloc_end - SZ_8M;
pr_debug("initializing malloc pool at 0x%08lx (size 0x%08lx)\n",
malloc_start, malloc_end - malloc_start);
mem_malloc_init((void *)malloc_start, (void *)_stext - 1);
mips_stack_top = malloc_start;
glob_fdt = fdt;
glob_fdt_size = fdt_size;
start_barebox();
}
void __noreturn nios_start_barebox(void)
{
mem_malloc_init((void *)(NIOS_SOPC_TEXT_BASE - MALLOC_SIZE),
(void *)(NIOS_SOPC_TEXT_BASE - 1));
start_barebox();
}
/**
* Called plainly from assembler code
*
* @note The C environment isn't initialized yet
*/
void main_entry(void)
{
/* clear the BSS first */
memset(__bss_start, 0x00, __bss_stop - __bss_start);
cpu_probe();
if (cpu_has_4k_cache) {
extern void r4k_cache_init(void);
r4k_cache_init();
}
trap_init();
start_barebox();
}
__noreturn void barebox_non_pbl_start(unsigned long membase,
unsigned long memsize, void *boarddata)
{
unsigned long endmem = membase + memsize;
unsigned long malloc_start, malloc_end;
unsigned long barebox_size = barebox_image_size + MAX_BSS_SIZE;
if (IS_ENABLED(CONFIG_RELOCATABLE)) {
unsigned long barebox_base = arm_mem_barebox_image(membase,
endmem,
barebox_size);
relocate_to_adr(barebox_base);
}
setup_c();
barrier();
pr_debug("memory at 0x%08lx, size 0x%08lx\n", membase, memsize);
arm_stack_top = endmem;
arm_barebox_size = barebox_size;
malloc_end = arm_mem_barebox_image(membase, endmem,
arm_barebox_size);
if (IS_ENABLED(CONFIG_MMU_EARLY)) {
unsigned long ttb = arm_mem_ttb(membase, endmem);
if (IS_ENABLED(CONFIG_PBL_IMAGE)) {
arm_set_cache_functions();
} else {
pr_debug("enabling MMU, ttb @ 0x%08lx\n", ttb);
arm_early_mmu_cache_invalidate();
mmu_early_enable(membase, memsize, ttb);
}
}
if (boarddata) {
uint32_t totalsize = 0;
const char *name;
if (blob_is_fdt(boarddata)) {
totalsize = get_unaligned_be32(boarddata + 4);
name = "DTB";
} else if (blob_is_compressed_fdt(boarddata)) {
struct barebox_arm_boarddata_compressed_dtb *bd = boarddata;
totalsize = bd->datalen + sizeof(*bd);
name = "Compressed DTB";
} else if (blob_is_arm_boarddata(boarddata)) {
totalsize = sizeof(struct barebox_arm_boarddata);
name = "machine type";
}
if (totalsize) {
unsigned long mem = arm_mem_boarddata(membase, endmem,
totalsize);
pr_debug("found %s in boarddata, copying to 0x%08lx\n",
name, mem);
barebox_boarddata = memcpy((void *)mem, boarddata,
totalsize);
barebox_boarddata_size = totalsize;
malloc_end = mem;
}
}
/*
* Maximum malloc space is the Kconfig value if given
* or 1GB.
*/
if (MALLOC_SIZE > 0) {
malloc_start = malloc_end - MALLOC_SIZE;
if (malloc_start < membase)
malloc_start = membase;
} else {
malloc_start = malloc_end - (malloc_end - membase) / 2;
if (malloc_end - malloc_start > SZ_1G)
malloc_start = malloc_end - SZ_1G;
}
pr_debug("initializing malloc pool at 0x%08lx (size 0x%08lx)\n",
malloc_start, malloc_end - malloc_start);
mem_malloc_init((void *)malloc_start, (void *)malloc_end - 1);
pr_debug("starting barebox...\n");
start_barebox();
}
/**
* Called plainly from assembler that switches from real to flat mode
*
* @note The C environment isn't initialized yet
*/
void uboot_entry(void)
{
/* clear the BSS first */
memset(__bss_start, 0x00, __bss_stop - __bss_start);
start_barebox();
}
int main(int argc, char *argv[])
{
void *ram;
int opt, ret, fd;
int malloc_size = CONFIG_MALLOC_SIZE;
int fdno = 0, envno = 0, option_index = 0;
while (1) {
option_index = 0;
opt = getopt_long(argc, argv, optstring,
long_options, &option_index);
if (opt == -1)
break;
switch (opt) {
case 'h':
print_usage(basename(argv[0]));
exit(0);
case 'm':
malloc_size = strtoul(optarg, NULL, 0);
break;
case 'i':
break;
case 'e':
break;
case 'd':
ret = add_dtb(optarg);
if (ret) {
printf("Failed to load dtb: '%s'\n", optarg);
exit(1);
}
break;
case 'O':
fd = open(optarg, O_WRONLY);
if (fd < 0) {
perror("open");
exit(1);
}
barebox_register_console("cout", -1, fd);
break;
case 'I':
fd = open(optarg, O_RDWR);
if (fd < 0) {
perror("open");
exit(1);
}
barebox_register_console("cin", fd, -1);
break;
case 'x':
sdl_xres = strtoul(optarg, NULL, 0);
break;
case 'y':
sdl_yres = strtoul(optarg, NULL, 0);
break;
default:
exit(1);
}
}
ram = malloc(malloc_size);
if (!ram) {
printf("unable to get malloc space\n");
exit(1);
}
mem_malloc_init(ram, ram + malloc_size - 1);
/*
* Reset getopt.
* We need to run a second getopt to count -i parameters.
* This is for /dev/fd# devices.
*/
optind = 1;
while (1) {
option_index = 0;
opt = getopt_long(argc, argv, optstring,
long_options, &option_index);
if (opt == -1)
break;
switch (opt) {
case 'i':
ret = add_image(optarg, "fd%d", &fdno);
if (ret)
exit(1);
break;
case 'e':
ret = add_image(optarg, "env%d", &envno);
if (ret)
exit(1);
break;
default:
break;
}
}
barebox_register_console("console", fileno(stdin), fileno(stdout));
rawmode();
start_barebox();
/* never reached */
return 0;
}