atomic_t hart_lottery;
unsigned long boot_cpu_hartid;
- #ifdef CONFIG_BLK_DEV_INITRD
- static void __init setup_initrd(void)
- {
- unsigned long size;
-
- if (initrd_start >= initrd_end) {
- pr_info("initrd not found or empty");
- goto disable;
- }
- if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
- pr_err("initrd extends beyond end of memory");
- goto disable;
- }
-
- size = initrd_end - initrd_start;
- memblock_reserve(__pa(initrd_start), size);
- initrd_below_start_ok = 1;
-
- pr_info("Initial ramdisk at: 0x%p (%lu bytes)\n",
- (void *)(initrd_start), size);
- return;
- disable:
- pr_cont(" - disabling initrd\n");
- initrd_start = 0;
- initrd_end = 0;
- }
- #endif /* CONFIG_BLK_DEV_INITRD */
-
- pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
- pgd_t trampoline_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
-
- #ifndef __PAGETABLE_PMD_FOLDED
- #define NUM_SWAPPER_PMDS ((uintptr_t)-PAGE_OFFSET >> PGDIR_SHIFT)
- pmd_t swapper_pmd[PTRS_PER_PMD*((-PAGE_OFFSET)/PGDIR_SIZE)] __page_aligned_bss;
- pmd_t trampoline_pmd[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
- #endif
-unsigned long __cpuid_to_hartid_map[NR_CPUS] = {
- [0 ... NR_CPUS-1] = INVALID_HARTID
-};
--
- asmlinkage void __init setup_vm(void)
-void __init smp_setup_processor_id(void)
--{
- extern char _start;
- uintptr_t i;
- uintptr_t pa = (uintptr_t) &_start;
- pgprot_t prot = __pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_EXEC);
-
- va_pa_offset = PAGE_OFFSET - pa;
- pfn_base = PFN_DOWN(pa);
-
- /* Sanity check alignment and size */
- BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0);
- BUG_ON((pa % (PAGE_SIZE * PTRS_PER_PTE)) != 0);
-
- #ifndef __PAGETABLE_PMD_FOLDED
- trampoline_pg_dir[(PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD] =
- pfn_pgd(PFN_DOWN((uintptr_t)trampoline_pmd),
- __pgprot(_PAGE_TABLE));
- trampoline_pmd[0] = pfn_pmd(PFN_DOWN(pa), prot);
-
- for (i = 0; i < (-PAGE_OFFSET)/PGDIR_SIZE; ++i) {
- size_t o = (PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD + i;
- swapper_pg_dir[o] =
- pfn_pgd(PFN_DOWN((uintptr_t)swapper_pmd) + i,
- __pgprot(_PAGE_TABLE));
- }
- for (i = 0; i < ARRAY_SIZE(swapper_pmd); i++)
- swapper_pmd[i] = pfn_pmd(PFN_DOWN(pa + i * PMD_SIZE), prot);
- #else
- trampoline_pg_dir[(PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD] =
- pfn_pgd(PFN_DOWN(pa), prot);
-
- for (i = 0; i < (-PAGE_OFFSET)/PGDIR_SIZE; ++i) {
- size_t o = (PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD + i;
- swapper_pg_dir[o] =
- pfn_pgd(PFN_DOWN(pa + i * PGDIR_SIZE), prot);
- }
- #endif
- cpuid_to_hartid_map(0) = boot_cpu_hartid;
--}
--
void __init parse_dtb(unsigned int hartid, void *dtb)
{
- if (!early_init_dt_scan(__va(dtb)))
+ if (early_init_dt_scan(__va(dtb)))
return;
pr_err("No DTB passed to the kernel\n");