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drivers/ipmi: implement "POST complete" notification functionality 

Some server boards like OCP Tiogapass and X11-LGA1151 boards use a gpio
for signalling "POST complete" to BMC/IPMI. Add a new driver devicetree
option to set the gpio and configure a callback that pulls the gpio low
right before jumping to the payload.

Test: Check that sensor readings appear in BMC web interface when the
payload gets executed.

Successfully tested on Supermicro X11SSM-F with CB:48097, X11SSH-TF with
CB:48711 and OCP DeltaLake with CB:48672.

Change-Id: I34764858be9c7f7f1110ce885fa056591164f148
Tested-by: Johnny Lin <Johnny_Lin@wiwynn.com>
Tested-by: Michael Niewöhner <foss@mniewoehner.de>
Tested-by: Patrick Rudolph <siro@das-labor.org>
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48096
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
This commit is contained in:
Michael Niewöhner 2020-11-24 12:45:07 +01:00
parent 31830d3c2c
commit 548a3dc7a6
2 changed files with 33 additions and 0 deletions
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3
src/drivers/ipmi/chip.h
View File

@ -22,6 +22,9 @@ struct drivers_ipmi_config {
* If present, the jumper overrides the devicetree.
*/
u32 bmc_jumper_gpio;
/* "POST complete" GPIO and polarity */
u32 post_complete_gpio;
bool post_complete_invert;
/*
* Wait for BMC to boot.
* This can be used if the BMC takes a long time to boot after PoR:

30
src/drivers/ipmi/ipmi_kcs_ops.c
View File

@ -9,6 +9,7 @@
*/
#include <arch/io.h>
#include <bootstate.h>
#include <console/console.h>
#include <device/device.h>
#include <device/gpio.h>
@ -34,6 +35,8 @@ static u8 ipmi_revision_minor = 0x0;
static u8 bmc_revision_major = 0x0;
static u8 bmc_revision_minor = 0x0;
static struct boot_state_callback bscb_post_complete;
static int ipmi_get_device_id(struct device *dev, struct ipmi_devid_rsp *rsp)
{
int ret;
@ -74,6 +77,26 @@ static int ipmi_get_bmc_self_test_result(struct device *dev, struct ipmi_selftes
return 0;
}
static void bmc_set_post_complete_gpio_callback(void *arg)
{
struct drivers_ipmi_config *conf = arg;
const struct gpio_operations *gpio_ops;
if (!conf || !conf->post_complete_gpio)
return;
gpio_ops = dev_get_gpio_ops(conf->gpio_dev);
if (!gpio_ops) {
printk(BIOS_WARNING, "IPMI: specified gpio device is missing gpio ops!\n");
return;
}
/* Set POST Complete pin. The `invert` field controls the polarity. */
gpio_ops->output(conf->post_complete_gpio, conf->post_complete_invert ^ 1);
printk(BIOS_DEBUG, "BMC: POST complete gpio set\n");
}
static void ipmi_kcs_init(struct device *dev)
{
struct ipmi_devid_rsp rsp;
@ -105,6 +128,13 @@ static void ipmi_kcs_init(struct device *dev)
printk(BIOS_DEBUG, "IPMI: PNP KCS 0x%x\n", dev->path.pnp.port);
/* Set up boot state callback for POST_COMPLETE# */
if (conf->post_complete_gpio) {
bscb_post_complete.callback = bmc_set_post_complete_gpio_callback;
bscb_post_complete.arg = conf;
boot_state_sched_on_entry(&bscb_post_complete, BS_PAYLOAD_BOOT);
}
/* Get IPMI version for ACPI and SMBIOS */
if (conf->wait_for_bmc && conf->bmc_boot_timeout) {
struct stopwatch sw;