When running u-boot starting linux on qemu and using gdb to debug the program, (on a modified arm64 virt machine),
I see this strange things. Right after I enter linux start_kernel( ), I added these two lines, datax = read_sysreg(CurrentEL); -- line 1 datax = read_sysreg(TTBR1_EL2); -- line 2 after line 1 and before line 2, the value of datax is seen as 8. (bit [3:2] is current EL, so it's EL2). after line 2, the value of datax is still 8, but the result of `info reg TTBR1_EL2` is 0x8065a000. The disassembled assembly code shows no reading of TTBR1_EL2 register. How can this happen? Should I set something in the kernel configuration? Any help will be really appreciated. Thank you! Chan Kim
