void mem_lock_heap(uintptr_t *start, size_t *size)
{
assert(!mem_locked);
mem_locked = 1;
*start = heap_start;
*size = platform_mem_size() - heap_start;
}
void mem_init(void)
{
extern char _stext[], _etext[], _erodata[], _end[];
uint64_t mem_size;
mem_size = platform_mem_size();
heap_start = ((uint64_t)&_end + PAGE_SIZE - 1) & PAGE_MASK;
/*
* Cowardly refuse to run with less than 512KB of free memory.
*/
if (heap_start + 0x80000 > mem_size)
PANIC("Not enough memory", NULL);
log(INFO, "Solo5: Memory map: %lu MB addressable:\n", mem_size >> 20);
log(INFO, "Solo5: unused @ (0x0 - 0x%lx)\n", _stext-1);
log(INFO, "Solo5: text @ (0x%lx - 0x%lx)\n", _stext, _etext-1);
log(INFO, "Solo5: rodata @ (0x%lx - 0x%lx)\n", _etext, _erodata-1);
log(INFO, "Solo5: data @ (0x%lx - 0x%lx)\n", _erodata, _end-1);
log(INFO, "Solo5: heap >= 0x%lx < stack < 0x%lx\n", heap_start,
mem_size);
}
void _start(void *arg)
{
crt_init_tls();
crt_init_ssp();
volatile int gdb = 1;
serial_init();
if (!gdb)
log(INFO, "Solo5: Waiting for gdb...\n");
while (gdb == 0)
;
cpu_init();
platform_init(arg);
/*
* Switch away from the bootstrap stack (in boot.S) as early as possible.
*/
_newstack(platform_mem_size(), _start2, 0);
}
