diff options
| author | Jonathon Hall <jonathon.hall@puri.sm> | 2022-12-20 11:22:35 -0500 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-06-12 15:31:25 +0000 |
| commit | a4f701e114a2b973e99d5de9a340f123c4b6877a (patch) | |
| tree | 22393d431ac93ed3496215d8581a31eb187dbefb /src/mainboard | |
| parent | 37e83250e83ee00e884d38a76a5e94c91ab28d05 (diff) | |
mb/purism/librem_cnl: Define CMOS layout for Librem Mini v1/v2
Define a CMOS layout for Librem Mini v1/v2 spanning both banks. The
only setting provided is the automatic power-on setting, which is
implemented by the EC. This can now be configured in a firmware image
by replacing cmos.default in CBFS.
Since cmos.default is applied early in bootblock, the EC BRAM interface
must now be configured in bootblock, including opening the LPC I/O
range.
Change-Id: Ib0a4ea02d71f6f99e344484726a629e0552e4941
Signed-off-by: Jonathon Hall <jonathon.hall@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74363
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard')
5 files changed, 64 insertions, 0 deletions
diff --git a/src/mainboard/purism/librem_cnl/Kconfig b/src/mainboard/purism/librem_cnl/Kconfig index 0c17ec967c..ef05a3ecb9 100644 --- a/src/mainboard/purism/librem_cnl/Kconfig +++ b/src/mainboard/purism/librem_cnl/Kconfig @@ -15,11 +15,15 @@ config BOARD_PURISM_BASEBOARD_LIBREM_CNL config BOARD_PURISM_LIBREM_MINI select BOARD_PURISM_BASEBOARD_LIBREM_CNL + select HAVE_CMOS_DEFAULT + select HAVE_OPTION_TABLE select SOC_INTEL_WHISKEYLAKE select SUPERIO_ITE_IT8528E config BOARD_PURISM_LIBREM_MINI_V2 select BOARD_PURISM_BASEBOARD_LIBREM_CNL + select HAVE_CMOS_DEFAULT + select HAVE_OPTION_TABLE select SOC_INTEL_COMETLAKE_1 select SUPERIO_ITE_IT8528E @@ -85,6 +89,12 @@ if BOARD_PURISM_LIBREM_MINI || BOARD_PURISM_LIBREM_MINI_V2 config PC_CMOS_BASE_PORT_BANK1 default 0x360 +config CMOS_LAYOUT_FILE + default "src/mainboard/\$(MAINBOARDDIR)/variants/librem_mini/cmos.layout" + +config CMOS_DEFAULT_FILE + default "src/mainboard/\$(MAINBOARDDIR)/variants/librem_mini/cmos.default" + endif config ENABLE_EC_UART1 diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/Makefile.inc b/src/mainboard/purism/librem_cnl/variants/librem_mini/Makefile.inc index 20ff43819f..874cde1524 100644 --- a/src/mainboard/purism/librem_cnl/variants/librem_mini/Makefile.inc +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/Makefile.inc @@ -2,3 +2,4 @@ all-y += die.c smm-y += die.c +bootblock-y += bootblock.c diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/bootblock.c b/src/mainboard/purism/librem_cnl/variants/librem_mini/bootblock.c new file mode 100644 index 0000000000..558815c618 --- /dev/null +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/bootblock.c @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <bootblock_common.h> +#include <device/pnp_ops.h> +#include <superio/ite/common/ite.h> +#include <superio/ite/it8528e/it8528e.h> +#include <intelblocks/lpc_lib.h> + +void bootblock_mainboard_early_init(void) +{ + /* + * Enable the EC BRAM interface, and set bank 1's I/O BAR. + * BRAM on this board uses bank 0 from the PCH and bank 1 from the EC: + * + * - PCH bank 0 is used for the RTC. Either should work, but the PCH + * RTC was used historically, and it's preferable not to change this + * in an update. + * - EC bank 1 contains the automatic-power-on setting, which is useful + * to use the Mini as an appliance-like server. + * + * cmos.default can be used to configure the automatic power-on setting + * in firmware. We have to set up the BRAM interface in bootblock, + * because cmos.default is applied early in bootblock. + */ + const pnp_devfn_t ec_rtct_dev = PNP_DEV(0x2E, IT8528E_RTCT); + pnp_enter_conf_state(ec_rtct_dev); + pnp_set_logical_device(ec_rtct_dev); + pnp_set_enable(ec_rtct_dev, 1); + pnp_set_iobase(ec_rtct_dev, 0x62, CONFIG_PC_CMOS_BASE_PORT_BANK1); + pnp_exit_conf_state(ec_rtct_dev); + + /* Open the BRAM 1 bank interface on LPC */ + lpc_open_pmio_window(CONFIG_PC_CMOS_BASE_PORT_BANK1, 2); +} diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.default b/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.default new file mode 100644 index 0000000000..1c414b3808 --- /dev/null +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.default @@ -0,0 +1 @@ +power_on_after_fail=Disable diff --git a/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.layout b/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.layout new file mode 100644 index 0000000000..454ea8b538 --- /dev/null +++ b/src/mainboard/purism/librem_cnl/variants/librem_mini/cmos.layout @@ -0,0 +1,18 @@ +## SPDX-License-Identifier: GPL-2.0-only + +entries + +# start-bit length config config-ID name +0 112 r 0 reserved_memory +1352 8 e 1 power_on_after_fail + +enumerations +#ID value text +1 0 Enable +1 1 Disable + +checksums + +# The EC firmware does initialize power_on_after_fail if it is invalid, but it +# does not have a checksum. Put a checksum at the end of bank 1. +checksum 1352 1359 1520 |