Add a simple command to show information about the PMC.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/Kconfig | 1 + cmd/Kconfig | 8 ++++++ cmd/Makefile | 1 + cmd/pmc.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 91 insertions(+) create mode 100644 cmd/pmc.c
diff --git a/arch/Kconfig b/arch/Kconfig index e22d62f9290..0374139fa89 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -134,6 +134,7 @@ config SANDBOX imply DM_MDIO imply DM_MDIO_MUX imply POWER_MGR + imply CMD_PMC imply POWER_MGR_SANDBOX
config SH diff --git a/cmd/Kconfig b/cmd/Kconfig index 98647f58b7a..eaad9e52578 100644 --- a/cmd/Kconfig +++ b/cmd/Kconfig @@ -225,6 +225,14 @@ config CMD_LICENSE help Print GPL license text
+config CMD_PMC + bool "pmc" + help + Provides access to the Intel Power-Management Controller (PMC) so + that its state can be examined. This does not currently support + changing the state but it is still useful for debugging and seeing + what is going on. + config CMD_REGINFO bool "reginfo" depends on PPC diff --git a/cmd/Makefile b/cmd/Makefile index ac843b4b16a..8151ba8741f 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -108,6 +108,7 @@ ifdef CONFIG_PCI obj-$(CONFIG_CMD_PCI) += pci.o endif obj-$(CONFIG_CMD_PINMUX) += pinmux.o +obj-$(CONFIG_CMD_PMC) += pmc.o obj-$(CONFIG_CMD_PXE) += pxe.o obj-$(CONFIG_CMD_WOL) += wol.o obj-$(CONFIG_CMD_QFW) += qfw.o diff --git a/cmd/pmc.c b/cmd/pmc.c new file mode 100644 index 00000000000..704e8e86534 --- /dev/null +++ b/cmd/pmc.c @@ -0,0 +1,81 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Intel PMC command + * + * Copyright 2019 Google LLC + */ + +#include <common.h> +#include <command.h> +#include <dm.h> +#include <power/power_mgr.h> + +static int get_pmc_dev(struct udevice **devp) +{ + struct udevice *dev; + int ret; + + ret = uclass_first_device_err(UCLASS_POWER_MGR, &dev); + if (ret) { + printf("Could not find device (err=%d)\n", ret); + return ret; + } + ret = pmc_init(dev); + if (ret) { + printf("Could not init device (err=%d)\n", ret); + return ret; + } + *devp = dev; + + return 0; +} + +static int do_pcm_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + struct udevice *dev; + int ret; + + ret = get_pmc_dev(&dev); + if (ret) + return CMD_RET_FAILURE; + + return 0; +} + +static int do_pcm_info(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + struct udevice *dev; + int ret; + + ret = get_pmc_dev(&dev); + if (ret) + return CMD_RET_FAILURE; + pmc_dump_info(dev); + + return 0; +} + +static cmd_tbl_t cmd_pmc_sub[] = { + U_BOOT_CMD_MKENT(init, 0, 1, do_pcm_init, "", ""), + U_BOOT_CMD_MKENT(info, 0, 1, do_pcm_info, "", ""), +}; + +static int do_pmc(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + const cmd_tbl_t *cp; + + if (argc < 2) /* no subcommand */ + return cmd_usage(cmdtp); + + cp = find_cmd_tbl(argv[1], &cmd_pmc_sub[0], ARRAY_SIZE(cmd_pmc_sub)); + if (!cp) + return CMD_RET_USAGE; + + return cp->cmd(cmdtp, flag, argc, argv); +} + +U_BOOT_CMD( + pmc, 2, 1, do_pmc, "Power-management controller info", + "info - read state and show info about the PMC\n" + "pcm init - read state from the PMC\n" + );