Add fu540 board driver, which is used to get runtime boot mode of fu540 boards.
Cc: Mario Six mario.six@gdsys.cc Cc: Tom Rini trini@konsulko.com Cc: Simon Glass sjg@chromium.org Cc: Jean-Jacques Hiblot jjhiblot@ti.com Signed-off-by: Jagan Teki jagan@amarulasolutions.com --- Changes for v2: - new patch
drivers/board/Kconfig | 8 ++++ drivers/board/Makefile | 1 + drivers/board/fu540.c | 86 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 95 insertions(+) create mode 100644 drivers/board/fu540.c
diff --git a/drivers/board/Kconfig b/drivers/board/Kconfig index 254f657049..306ee76bbd 100644 --- a/drivers/board/Kconfig +++ b/drivers/board/Kconfig @@ -12,6 +12,14 @@ config SPL_BOARD depends on SPL_DM bool "Enable board driver support in SPL"
+config BOARD_FU540 + bool "Enable board driver for the FU540 boards" + depends on RISCV + select SPL_BOARD + help + Support querying board information for the fu540 boards, like + get soc mode select, get SPL boot device and etc. + config BOARD_GAZERBEAM bool "Enable board driver for the Gazerbeam board" help diff --git a/drivers/board/Makefile b/drivers/board/Makefile index cc16361755..e924472779 100644 --- a/drivers/board/Makefile +++ b/drivers/board/Makefile @@ -3,5 +3,6 @@ # (C) Copyright 2017 # Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc obj-y += board-uclass.o +obj-$(CONFIG_BOARD_FU540) += fu540.o obj-$(CONFIG_BOARD_GAZERBEAM) += gazerbeam.o obj-$(CONFIG_BOARD_SANDBOX) += sandbox.o diff --git a/drivers/board/fu540.c b/drivers/board/fu540.c new file mode 100644 index 0000000000..68d356df6b --- /dev/null +++ b/drivers/board/fu540.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2020 Amarula Solutions(India) + */ + +#include <common.h> +#include <dm.h> +#include <dm/device_compat.h> +#include <board.h> +#include <spl.h> +#include <asm/io.h> + +#define MODE_SELECT_QSPI 0x6 +#define MODE_SELECT_SD 0xb +#define MODE_SELECT_MASK GENMASK(3, 0) + +struct fu540_board { + void __iomem *regs; +}; + +static int fu540_get_boot_device(struct udevice *dev) +{ + struct fu540_board *priv = dev_get_priv(dev); + u8 boot_device = BOOT_DEVICE_MMC1; + u32 reg; + + reg = readl(priv->regs); + switch (reg & MODE_SELECT_MASK) { + case MODE_SELECT_QSPI: + boot_device = BOOT_DEVICE_SPI; + break; + case MODE_SELECT_SD: + boot_device = BOOT_DEVICE_MMC1; + break; + default: + dev_err(dev, + "Unsupported boot device 0x%x but trying MMC1\n", + boot_device); + break; + } + + return boot_device; +} + +static int fu540_board_get_int(struct udevice *dev, int id, int *val) +{ + switch (id) { + case BOARD_SPL_BOOT_DEVICE: + *val = fu540_get_boot_device(dev); + break; + default: + dev_err(dev, "%s: Integer value %d unknown\n", dev->name, id); + return -EINVAL; + } + + return 0; +} + +static const struct board_ops fu540_board_ops = { + .get_int = fu540_board_get_int, +}; + +static int fu540_board_probe(struct udevice *dev) +{ + struct fu540_board *priv = dev_get_priv(dev); + + priv->regs = (void __iomem *)dev_read_addr(dev); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + + return 0; +} + +static const struct udevice_id fu540_board_ids[] = { + { .compatible = "sifive,fu540-modeselect", }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(fu540_board) = { + .id = UCLASS_BOARD, + .name = "fu540_board", + .of_match = fu540_board_ids, + .ops = &fu540_board_ops, + .priv_auto_alloc_size = sizeof(struct fu540_board), + .probe = fu540_board_probe, +};