516
edits
Changes
mLine 491:
Line 491: − +
→PDN_LGR_CPU_CNT
The overlay should be enabled by setting bit0 in [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_CNT|CFG11_BOOTROM_OVERLAY_CNT]] and configured by setting the entrypoint address to [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]].
The overlay should be enabled by setting bit0 in [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_CNT|CFG11_BOOTROM_OVERLAY_CNT]] and configured by setting the entrypoint address to [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]].
The overlays overrides all ''instruction'' reads from phyiscal addresses 0xFFFF0000-0xFFFF1000 and 0x10000-0x11000 to the following (figured out by using low exception vectors and configuring the b11 veeners accordingly):
The overlay overrides all ''instruction'' reads from phyiscal addresses 0xFFFF0000-0xFFFF1000 and 0x10000-0x11000 to the following (figured out by using low exception vectors and configuring the b11 veeners accordingly):
ldr pc, [pc, #(0x20 - 8)]
ldr pc, [pc, #(0x20 - 8)]
and all ''data'' reads from the same ranges to [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]].
and all ''data'' reads from the same ranges to [[CONFIG11_Registers#CFG11_BOOTROM_OVERLAY_VAL|CFG11_BOOTROM_OVERLAY_VAL]].