From patchwork Tue May 12 06:25:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michal Simek X-Patchwork-Id: 245614 List-Id: U-Boot discussion From: michal.simek at xilinx.com (Michal Simek) Date: Tue, 12 May 2020 08:25:11 +0200 Subject: [PATCH] firmware: zynqmp: Change panic logic in zynqmp_pmufw_load_config_object() Message-ID: There is no need to panic all the time when pmufw config object loading failed. The patch improves function logic to report permission deny case and also panic only for SPL case. Signed-off-by: Michal Simek Reviewed-by: Luca Ceresoli --- drivers/firmware/firmware-zynqmp.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/firmware/firmware-zynqmp.c b/drivers/firmware/firmware-zynqmp.c index c37642569dda..bef6fc05dc69 100644 --- a/drivers/firmware/firmware-zynqmp.c +++ b/drivers/firmware/firmware-zynqmp.c @@ -15,6 +15,8 @@ #define PMUFW_PAYLOAD_ARG_CNT 8 +#define XST_PM_NO_ACCESS 2002L + struct zynqmp_power { struct mbox_chan tx_chan; struct mbox_chan rx_chan; @@ -96,16 +98,25 @@ void zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size) PM_SET_CONFIGURATION, (u32)((u64)cfg_obj) }; - u32 response; + u32 response = 0; int err; printf("Loading new PMUFW cfg obj (%ld bytes)\n", size); err = send_req(request, ARRAY_SIZE(request), &response, 1); + if (err == XST_PM_NO_ACCESS) { + printf("PMUFW no permission to change config object\n"); + return; + } + if (err) - panic("Cannot load PMUFW configuration object (%d)\n", err); - if (response != 0) - panic("PMUFW returned 0x%08x status!\n", response); + printf("Cannot load PMUFW configuration object (%d)\n", err); + + if (response) + printf("PMUFW returned 0x%08x status!\n", response); + + if ((err || response) && IS_ENABLED(CONFIG_SPL_BUILD)) + panic("PMUFW config object loading failed in EL3\n"); } static int zynqmp_power_probe(struct udevice *dev)