meta-asrock: e3c256d4i: Add obmc-console config
While on all other currently supported ASRock platforms the Aspeed VUART
provides the host serial console, we haven't had any success using it
over eSPI on e3c256d4i, so instead we're using a pair of SUARTs
connected via the UART mux.
This unforunately requires leaving the AST2500's built-in Super-IO
enabled, because the host firmware needs to access it shortly after
power-on in order to configure its UART output, so we also have to open
up some of the u-boot backdoor config options too.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
Change-Id: Ibdab607d504cebd956a7e23191c09cd0d5c44e50
diff --git a/meta-asrock/meta-e3c256d4i/recipes-bsp/u-boot/files/e3c256d4i.cfg b/meta-asrock/meta-e3c256d4i/recipes-bsp/u-boot/files/e3c256d4i.cfg
index e0814ce..8bbe1b2 100644
--- a/meta-asrock/meta-e3c256d4i/recipes-bsp/u-boot/files/e3c256d4i.cfg
+++ b/meta-asrock/meta-e3c256d4i/recipes-bsp/u-boot/files/e3c256d4i.cfg
@@ -3,3 +3,8 @@
# glitches the line and resets the host; disabling the driver (which we don't
# need) prevents that.
CONFIG_MMC_SDHCI_ASPEED=n
+
+# Unfortunately the host needs access to the ast2500 Super-IO in order to
+# configure the UART for its serial console
+CONFIG_ASPEED_ALLOW_DANGEROUS_BACKDOORS=y
+CONFIG_ASPEED_ENABLE_SUPERIO=y
diff --git a/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console/obmc-console.conf b/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console/obmc-console.conf
new file mode 100644
index 0000000..84fbe60
--- /dev/null
+++ b/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console/obmc-console.conf
@@ -0,0 +1,4 @@
+baud = 115200
+
+# Host uses UART2, BMC uses UART4
+aspeed-uart-routing = uart4:uart2 uart2:uart4
diff --git a/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console_git.bbappend b/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console_git.bbappend
new file mode 100644
index 0000000..ba98fc2
--- /dev/null
+++ b/meta-asrock/meta-e3c256d4i/recipes-phosphor/console/obmc-console_git.bbappend
@@ -0,0 +1,3 @@
+FILESEXTRAPATHS:prepend := "${THISDIR}/${PN}:"
+
+OBMC_CONSOLE_HOST_TTY = "ttyS3"