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In such case, elf's boot address > will be in the ddr, and it should be passed to the PLM via EEMI call. > Add ddr boot config EEMI call before starting RPU to configure the boot > address. Also make sure TCM-Boot is support for old platforms as well. > Remove HIVEC & LOVEC enum, as now PLM supports boot address directly. > > Signed-off-by: Tanmay Shah > --- > drivers/firmware/xilinx/zynqmp.c | 44 ++++++++++++++++++++++++---- > include/linux/firmware/xlnx-zynqmp.h | 5 ---- > 2 files changed, 38 insertions(+), 11 deletions(-) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index f9a3a95b0638..bc3e407dbac3 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -1523,7 +1523,6 @@ EXPORT_SYMBOL_GPL(zynqmp_pm_request_wake); > */ > int zynqmp_pm_start_rpu(const u32 node, const u64 bootaddr) > { > - enum rpu_boot_mem bootmem; > int ret; > > /* > @@ -1532,22 +1531,55 @@ int zynqmp_pm_start_rpu(const u32 node, const u64 bootaddr) > * starts at the base-address and subsequent vectors are on 4-byte > * boundaries. > * > + * The Cortex-R5 cores can boot from TCM and OCM memories. > * Exception vectors can start either from 0x0000_0000 (LOVEC) or > * from 0xFFFF_0000 (HIVEC) which is mapped in the OCM (On-Chip Memory) > * > * Usually firmware will put Exception vectors at LOVEC. > * > + * The Cortex-R52 cores can boot from DDR and TCM. > + * That means vector table can be at address 0x0 or at any DDR address > + * that is in the 32-bit address range. Note that booting from DDR > + * address 0x0 is not supported and the user must always assume that if > + * 0x0 address is passed, then it will be TCM boot. > + * > * It is not recommend that you change the exception vector. > * Changing the EVP to HIVEC will result in increased interrupt latency > * and jitter. Also, if the OCM is secured and the Cortex-R5F processor > * is non-secured, then the Cortex-R5F processor cannot access the > * HIVEC exception vectors in the OCM. > */ > - bootmem = (bootaddr >= 0xFFFC0000) ? > - PM_RPU_BOOTMEM_HIVEC : PM_RPU_BOOTMEM_LOVEC; > + if (upper_32_bits(bootaddr)) { > + pr_err("invalid bootaddr = 0x%llx\n", bootaddr); > + return -EINVAL; > + } > > - pr_debug("RPU boot addr 0x%llx from %s.", bootaddr, > - bootmem == PM_RPU_BOOTMEM_HIVEC ? "OCM" : "TCM"); > + /* > + * New platforms can boot from DDR and require the DDR address > + * to be configured explicitly. If the correct version of the > + * IOCTL_RPU_BOOT_ADDR_CONFIG ioctl is not supported, do not > + * treat it as a failure. If a DDR address is passed on other > + * platforms, the PM request wake EEMI call will still fail and > + * the RPU won't boot. > + */ > + ret = zynqmp_pm_is_function_supported(PM_IOCTL, > + IOCTL_RPU_BOOT_ADDR_CONFIG); > + if (!ret) { > + /* config ddr boot address */ > + ret = zynqmp_pm_invoke_fn(PM_IOCTL, NULL, 3, > + node, > + IOCTL_RPU_BOOT_ADDR_CONFIG, > + bootaddr); > + if (ret < 0) { > + pr_err("failed to set RPU Boot address 0x%llx\n", > + bootaddr); > + return ret; > + } > + } else if (ret != -EOPNOTSUPP && ret != -ENODATA) { > + pr_err("ioctl rpu boot addr config ver check failed %d\n", > + ret); > + return ret; > + } > > /* Request node before starting RPU core if new version of API is supported */ > if (zynqmp_pm_feature(PM_REQUEST_NODE) > PM_API_VERSION_1) { > @@ -1561,7 +1593,7 @@ int zynqmp_pm_start_rpu(const u32 node, const u64 bootaddr) > } > > ret = zynqmp_pm_request_wake(node, true, > - bootmem, ZYNQMP_PM_REQUEST_ACK_NO); > + bootaddr, ZYNQMP_PM_REQUEST_ACK_NO); > if (ret) > pr_err("failed to start RPU = 0x%x\n", node); > return ret; > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h > index 347df66ee176..577a762e624b 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -269,11 +269,6 @@ enum rpu_oper_mode { > PM_RPU_MODE_SPLIT = 1, > }; > > -enum rpu_boot_mem { > - PM_RPU_BOOTMEM_LOVEC = 0, > - PM_RPU_BOOTMEM_HIVEC = 1, > -}; > - > enum rpu_tcm_comb { > PM_RPU_TCM_SPLIT = 0, > PM_RPU_TCM_COMB = 1, > > base-commit: 9a4cdc958dd79fc6c3b20b51a10debec6ca09fec Applied. M