Hi All,
Can anyone think of a reason why the arm primary bootloader cant be
done by just direct interaction with the CPU? Currently we have this
...
/* The worlds second smallest bootloader. Set r0-r2, then jump to kernel. */
static uint32_t bootloader[] = {
0xe3a00000, /* mov r0, #0 */
0xe59f1004, /* ldr r1, [pc, #4] */
0xe59f2004, /* ldr r2, [pc, #4] */
0xe59ff004, /* ldr pc, [pc, #4] */
0, /* Board ID */
0, /* Address of kernel args. Set by integratorcp_init. */
0 /* Kernel entry point. Set by integratorcp_init. */
};
... which gets injected into RAM then we set the PC to this blob and
go. But couldnt we just set R0-2 directly from the bootloader and just
straight to the kernel entry point? Why do we have to blob in a
lightweight bootloader?
Regards,
Peter
