Add a simple command to show information about the PMC.
Signed-off-by: Simon Glass <s...@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"
+ );
--
2.23.0.444.g18eeb5a265-goog
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