diff options
Diffstat (limited to 'drivers/firmware/firmware-zynqmp.c')
-rw-r--r-- | drivers/firmware/firmware-zynqmp.c | 76 |
1 files changed, 74 insertions, 2 deletions
diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index 5ed2b32c112..d1fff328e85 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -12,11 +12,76 @@ #include <mailbox.h> #include <asm/arch/sys_proto.h> +#define PMUFW_PAYLOAD_ARG_CNT 8 + struct zynqmp_power { struct mbox_chan tx_chan; struct mbox_chan rx_chan; } zynqmp_power; +static int ipi_req(const u32 *req, size_t req_len, u32 *res, size_t res_maxlen) +{ + struct zynqmp_ipi_msg msg; + int ret; + + if (req_len > PMUFW_PAYLOAD_ARG_CNT || + res_maxlen > PMUFW_PAYLOAD_ARG_CNT) + return -EINVAL; + + if (!(zynqmp_power.tx_chan.dev) || !(&zynqmp_power.rx_chan.dev)) + return -EINVAL; + + msg.buf = (u32 *)req; + msg.len = req_len; + ret = mbox_send(&zynqmp_power.tx_chan, &msg); + if (ret) { + debug("%s: Sending message failed\n", __func__); + return ret; + } + + msg.buf = res; + msg.len = res_maxlen; + ret = mbox_recv(&zynqmp_power.rx_chan, &msg, 100); + if (ret) + debug("%s: Receiving message failed\n", __func__); + + return ret; +} + +unsigned int zynqmp_firmware_version(void) +{ + int ret; + u32 ret_payload[PAYLOAD_ARG_CNT]; + static u32 pm_api_version = ZYNQMP_PM_VERSION_INVALID; + + /* + * Get PMU version only once and later + * just return stored values instead of + * asking PMUFW again. + **/ + if (pm_api_version == ZYNQMP_PM_VERSION_INVALID) { + if (IS_ENABLED(CONFIG_SPL_BUILD)) { + const u32 request[] = { PM_GET_API_VERSION }; + + ret = ipi_req(request, ARRAY_SIZE(request), + ret_payload, 2); + } else { + ret = invoke_smc(ZYNQMP_SIP_SVC_GET_API_VERSION, 0, 0, + 0, 0, ret_payload); + }; + + if (ret) + panic("PMUFW is not found - Please load it!\n"); + + pm_api_version = ret_payload[1]; + if (pm_api_version < ZYNQMP_PM_VERSION) + panic("PMUFW version error. Expected: v%d.%d\n", + ZYNQMP_PM_VERSION_MAJOR, ZYNQMP_PM_VERSION_MINOR); + } + + return pm_api_version; +}; + static int zynqmp_power_probe(struct udevice *dev) { int ret = 0; @@ -30,10 +95,17 @@ static int zynqmp_power_probe(struct udevice *dev) } ret = mbox_get_by_name(dev, "rx", &zynqmp_power.rx_chan); - if (ret) + if (ret) { debug("%s, cannot rx mailbox\n", __func__); + return ret; + } - return ret; + ret = zynqmp_firmware_version(); + printf("PMUFW:\tv%d.%d\n", + ret >> ZYNQMP_PM_VERSION_MAJOR_SHIFT, + ret & ZYNQMP_PM_VERSION_MINOR_MASK); + + return 0; }; static const struct udevice_id zynqmp_power_ids[] = { |