From b877a4e8b9eaafcacd2ed31ebcf47b769929e68d Mon Sep 17 00:00:00 2001 From: Stewart Smith Date: Fri, 26 Apr 2019 11:59:57 -0500 Subject: Write boot progress to LPC port 80h This is an adaptation of what we currently do for op_display() on FSP machines, inventing an encoding for what we can write into the single byte at LPC port 80h. Port 80h is often used on x86 systems to indicate boot progress/status and dates back a decent amount of time. Since a byte isn't exactly very expressive for everything that can go on (and wrong) during boot, it's all about compromise. Some systems (such as Zaius/Barreleye G2) have a physical dual 7 segment display that display these codes. So far, this has only been driven by hostboot (see hostboot commit 90ec2e65314c). Signed-off-by: Stewart Smith --- hw/test/run-port80h.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 hw/test/run-port80h.c (limited to 'hw/test/run-port80h.c') diff --git a/hw/test/run-port80h.c b/hw/test/run-port80h.c new file mode 100644 index 0000000..60f6986 --- /dev/null +++ b/hw/test/run-port80h.c @@ -0,0 +1,79 @@ +/* Copyright 2018 IBM Corp. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + * implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include + +#define __LPC_H + +uint8_t port80; + +static inline void lpc_outb(uint8_t data, uint32_t addr) +{ + assert(addr == 0x80); + port80 = data; +} + +#include "op-panel.h" + +void op_display_lpc(enum op_severity s, enum op_module m, uint16_t c); + +#include "../lpc-port80h.c" +#include "../../core/test/stubs.c" + +int main(void) +{ + op_display_lpc(OP_LOG, OP_MOD_INIT, 0x00); + assert(port80 == 0x80); + op_display_lpc(OP_WARN, OP_MOD_INIT, 0x00); + assert(port80 == 0x82); + op_display_lpc(OP_ERROR, OP_MOD_INIT, 0x00); + assert(port80 == 0x81); + op_display_lpc(OP_FATAL, OP_MOD_INIT, 0x00); + assert(port80 == 0x83); + op_display_lpc(OP_FATAL, OP_MOD_INIT, 0x0f); + assert(port80 == 0xBF); + op_display_lpc(OP_LOG, OP_MOD_INIT, 0x0f); + assert(port80 == 0xBC); + op_display_lpc(OP_FATAL, OP_MOD_CORE, 0x6666); + assert(port80 == 0xBF); + op_display_lpc(OP_LOG, OP_MOD_INIT, 0x01); + assert(port80 == 0x84); + op_display_lpc(OP_LOG, OP_MOD_CPU, 0x05); + assert(port80 == 0xC4); + op_display_lpc(OP_LOG, OP_MOD_LOCK, 0x07); + assert(port80 == 0xDC); + op_display_lpc(OP_FATAL, OP_MOD_LOCK, 0x07); + assert(port80 == 0xDF); + op_display_lpc(OP_FATAL, OP_MOD_MEM, 0x07); + assert(port80 == 0xEF); + op_display_lpc(OP_WARN, OP_MOD_MEM, 0x02); + assert(port80 == 0xEA); + op_display_lpc(OP_WARN, OP_MOD_CHIPTOD, 0x02); + assert(port80 == 0xFA); + + /* + * We can't assert that OP_MOD_FSP is invalid as we'd end up + * trying to set port80 in the assert parth + */ + op_display_lpc(OP_LOG, OP_MOD_FSP, 0x00); + assert(port80 == 0x80); + op_display_lpc(OP_LOG, OP_MOD_FSPCON, 0x00); + assert(port80 == 0x80); + return 0; +} -- cgit v1.1