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arm64: Reorganize payload entry code and related Kconfigs 

This patch slightly reorganizes arm64/boot.c with the aim of being more
readable:
Make more obvious that there's no code execution here after payload_entry.

[pg: taken from patch linked below]

Change-Id: Ia341e5d290b10ad5ba3edb349b8a7f619022d99f
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 5067e47bc03f04ad2dba044f022716e0fc62bb9e
Original-Change-Id: I1b2038acc0d054716a3c580ce97ea8e9a45abfa2
Original-Signed-off-by: Julius Werner <jwerner@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/270783
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10247
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Julius Werner 2015-05-07 16:59:31 -07:00 committed by Patrick Georgi
parent 883ec987a6
commit bbca3a9cfa
1 changed files with 8 additions and 11 deletions
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9
src/arch/arm64/boot.c
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@ -50,20 +50,17 @@ static void run_payload(struct prog *prog)
printk(BIOS_SPEW, "entry = %p\n", doit);
/* If current EL is not EL3, jump to payload at same EL. */
if (current_el != EL3) {
/* Point of no-return */
if (current_el != EL3)
doit(arg);
}
else {
/* If current EL is EL3, we transition to payload in EL2. */
struct exc_state exc_state;
memset(&exc_state, 0, sizeof(exc_state));
exc_state.elx.spsr = get_eret_el(EL2, SPSR_USE_L);
transition_with_entry(doit, arg, &exc_state);
}
}
}
void arch_prog_run(struct prog *prog)