From cc4dd88d2b21551f842302751255c6704b28bc52 Mon Sep 17 00:00:00 2001 From: Sudheer Kumar Amrabadi Date: Mon, 9 May 2022 18:20:19 +0530 Subject: [PATCH] sc7180: Trogdor to support 2 dcb BUG=b:227946776 TEST=Validated on sc7180 Lazor board Signed-off-by: Sudheer Kumar Amrabadi Change-Id: Ie4d7f7f0b24aee06ffb272b21b74fea4160fe87c Reviewed-on: https://review.coreboot.org/c/coreboot/+/64244 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner --- src/soc/qualcomm/sc7180/Makefile.inc | 9 +++++++++ src/soc/qualcomm/sc7180/qclib.c | 26 ++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) create mode 100644 src/soc/qualcomm/sc7180/qclib.c diff --git a/src/soc/qualcomm/sc7180/Makefile.inc b/src/soc/qualcomm/sc7180/Makefile.inc index cbdc5b3251..c8d7f2f78d 100644 --- a/src/soc/qualcomm/sc7180/Makefile.inc +++ b/src/soc/qualcomm/sc7180/Makefile.inc @@ -27,6 +27,7 @@ verstage-$(CONFIG_DRIVERS_UART) += ../common/qupv3_uart.c romstage-y += cbmem.c romstage-y += watchdog.c romstage-y += ../common/qclib.c +romstage-y += qclib.c romstage-y += ../common/mmu.c romstage-y += mmu.c romstage-y += ../common/usb/usb.c @@ -96,6 +97,14 @@ $(DCB_CBFS)-type := raw $(DCB_CBFS)-compression := $(CBFS_COMPRESS_FLAG) cbfs-files-y += $(DCB_CBFS) +################################################################################ +DCB_LONGSYS1P8_FILE := $(SC7180_BLOB)/boot/dcb_slow.bin +DCB_LONGSYS1P8_CBFS := $(CONFIG_CBFS_PREFIX)/dcb_longsys1p8 +$(DCB_LONGSYS1P8_CBFS)-file := $(DCB_LONGSYS1P8_FILE) +$(DCB_LONGSYS1P8_CBFS)-type := raw +$(DCB_LONGSYS1P8_CBFS)-compression := $(CBFS_COMPRESS_FLAG) +cbfs-files-y += $(DCB_LONGSYS1P8_CBFS) + ################################################################################ AOP_FILE := $(SC7180_BLOB)/aop/aop.mbn AOP_CBFS := $(CONFIG_CBFS_PREFIX)/aop diff --git a/src/soc/qualcomm/sc7180/qclib.c b/src/soc/qualcomm/sc7180/qclib.c new file mode 100644 index 0000000000..e05a24f029 --- /dev/null +++ b/src/soc/qualcomm/sc7180/qclib.c @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include +#include + +#define LONG_SYS_DCB_REG 0x7801C0 +#define FUSE_BIT 15 + +static int dcb_fuse_longsys1p8(void) +{ + unsigned int fuse_value, bit_value; + fuse_value = read32((unsigned int *)LONG_SYS_DCB_REG); + bit_value = (fuse_value >> FUSE_BIT) & 0x1; + return bit_value; +} + +const char *qclib_file(enum qclib_cbfs_file file) +{ + if ((file == QCLIB_CBFS_DCB) && dcb_fuse_longsys1p8()) { + printk(BIOS_INFO, "Using DCB for Longsys 1.8V memory based on fuse setting\n"); + return CONFIG_CBFS_PREFIX "/dcb_longsys1p8"; + } else { + return qclib_file_default(file); + } +}