.

common/board\_f.c

1    static int reserve_mmu(void)
2    {
3            /* reserve TLB table */
4            gd->arch.tlb_size = PGTABLE_SIZE;
5            gd->relocaddr -= gd->arch.tlb_size;
6    
7            /* round down to next 64 kB limit */
8            gd->relocaddr &= ~(0x10000 - 1);
9    
10            gd->arch.tlb_addr = gd->relocaddr;
11            debug("TLB table from %08lx to %08lx\n", gd->arch.tlb_addr,
12                  gd->arch.tlb_addr + gd->arch.tlb_size);
13    
14    #ifdef CONFIG_SYS_MEM_RESERVE_SECURE
15            /*
16             * Record allocated tlb_addr in case gd->tlb_addr to be overwritten
17             * with location within secure ram.
18             */
19            gd->arch.tlb_allocated = gd->arch.tlb_addr;
20    #endif
21
22            return 0;
23    }

• 4번 줄의 PGTABLE_SIZE은 arch/arm/include/asm/system.h에 4096 * 5로 정의되어 있습니다.
• 14번 줄의 CONFIG_SYS_MEM_RESERVE_SECURE은 정의되어 있지 않아 if문은 수행되지 않습니다.