ARM Linux相关

1. The page table at Arm Linux
It is the New ARMv6 page table, with The Not-Global (nG) bit, The Shared (S) bit, The Execute-Never (XN) bit,Three access permission bits.
The L1 base address is read from TTBR0, and the L1D[31..10] is the base address for L2 page table, the page table is 4KB extended small page, Base address from L2D[31:12], Indexed by VA[11:0], see P309 from ARM1136JF-S Tech Ref.

 

2. CP15 control value at Linux kernel
0x00C5387D
ve_XP_U_fi_st_IT_DT_lt_rr_V_I_Z_f_r_s_b_W_C_a_M