
21 /*
22 * Must be called after early_fixmap_init
23 */
24 void __init early_ioremap_init(void)
25 {
26 early_ioremap_setup();
27 }
71 void __init early_ioremap_setup(void)
72 {
73 int i;
74
75 for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
76 if (WARN_ON(prev_map[i]))
77 break;
78
79 for (i = 0; i < FIX_BTMAPS_SLOTS; i++)
80 slot_virt[i] = __fix_to_virt(FIX_BTMAP_BEGIN - NR_FIX_BTMAPS*i);
81 }
위 그림의 BTMAPS 영역을 slot_virt[]에 할당
'linux' 카테고리의 다른 글
6.1/setup_arch(char **cmdline_p) (0) | 2024.04.02 |
---|---|
6.1/fixmap_remap_fdt(phys_addr_t dt_phys, int *size, pgprot_t prot) (0) | 2023.12.19 |
6.1/early_fixmap_init(void) (0) | 2023.12.18 |
6.1/early_fdt_map(u64 dt_phys) (0) | 2023.12.18 |
6.1/Head.S (0) | 2023.11.16 |