From 20a87c0bed98fe8817a2dfccf4cd271199aabc1a Mon Sep 17 00:00:00 2001 From: Jianjun Wang Date: Wed, 28 Jul 2021 16:53:43 +0800 Subject: libpayload/pci: Add pci_map_bus function for MediaTek platform Add 'pci_map_bus' function and PCIE_MEDIATEK config for MediaTek platform. TEST=Build pass and boot up to kernel successfully via SSD on Dojo board, here is the SSD information in boot log: == NVME IDENTIFY CONTROLLER DATA == PCI VID : 0x15b7 PCI SSVID : 0x15b7 SN : 21517J440114 MN : WDC PC SN530 SDBPTPZ-256G-1006 RAB : 0x4 AERL : 0x7 SQES : 0x66 CQES : 0x44 NN : 0x1 Identified NVMe model WDC PC SN530 SDBPTPZ-256G-1006 BUG=b:178565024 BRANCH=cherry Signed-off-by: Jianjun Wang Change-Id: I9ea7d111fed6b816fa2352fe93c268116519a577 Reviewed-on: https://review.coreboot.org/c/coreboot/+/56794 Tested-by: build bot (Jenkins) Reviewed-by: Yu-Ping Wu --- payloads/libpayload/Kconfig | 5 +++++ payloads/libpayload/drivers/Makefile.inc | 2 ++ payloads/libpayload/drivers/pcie_mediatek.c | 20 ++++++++++++++++++++ 3 files changed, 27 insertions(+) create mode 100644 payloads/libpayload/drivers/pcie_mediatek.c (limited to 'payloads') diff --git a/payloads/libpayload/Kconfig b/payloads/libpayload/Kconfig index 7540c674a2c9..2ad3c0020604 100644 --- a/payloads/libpayload/Kconfig +++ b/payloads/libpayload/Kconfig @@ -413,6 +413,11 @@ config PCI_IO_OPS default y if ARCH_X86 default n +config PCIE_MEDIATEK + bool "Support for PCIe devices on MediaTek platforms" + depends on PCI && !PCI_IO_OPS + default n + config NVRAM bool "Support for reading/writing NVRAM bytes" depends on ARCH_X86 # for now diff --git a/payloads/libpayload/drivers/Makefile.inc b/payloads/libpayload/drivers/Makefile.inc index b2a91f6610f8..204760757bfb 100644 --- a/payloads/libpayload/drivers/Makefile.inc +++ b/payloads/libpayload/drivers/Makefile.inc @@ -36,6 +36,8 @@ else libc-$(CONFIG_LP_PCI) += pci_map_bus_ops.c endif +libc-$(CONFIG_LP_PCIE_MEDIATEK) += pcie_mediatek.c + libc-$(CONFIG_LP_SPEAKER) += speaker.c libc-$(CONFIG_LP_8250_SERIAL_CONSOLE) += serial/8250.c serial/serial.c diff --git a/payloads/libpayload/drivers/pcie_mediatek.c b/payloads/libpayload/drivers/pcie_mediatek.c new file mode 100644 index 000000000000..a953bd7fae6c --- /dev/null +++ b/payloads/libpayload/drivers/pcie_mediatek.c @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include +#include + +#define PCIE_CFGNUM_REG 0x140 +#define PCIE_CFG_DEVFN(devfn) ((devfn) & GENMASK(7, 0)) +#define PCIE_CFG_BUS(bus) (((bus) << 8) & GENMASK(15, 8)) +#define PCIE_CFG_OFFSET_ADDR 0x1000 +#define PCIE_CFG_HEADER(bus, devfn) \ + (PCIE_CFG_BUS(bus) | PCIE_CFG_DEVFN(devfn)) + +uintptr_t pci_map_bus(pcidev_t dev) +{ + u32 devfn = (PCI_SLOT(dev) << 3) | PCI_FUNC(dev); + u32 val = PCIE_CFG_HEADER(PCI_BUS(dev), devfn); + write32((void *)(lib_sysinfo.pcie_ctrl_base + PCIE_CFGNUM_REG), val); + + return lib_sysinfo.pcie_ctrl_base + PCIE_CFG_OFFSET_ADDR; +} -- cgit v1.2.3