xilinx: zynqmp: Enable pmufw config reloading
PMU FW has functionality to accept and reload configuration object at run
time. The patch is adding support for doing it via u-boot prompt.
For example:
tftpboot 100000 pmu_obj.bin
zynqmp pmufw 100000 $filesize
The most of pmufw configurations don't allow config reloading.
Also official Xilinx PMUFW doens't support this feature properly but the
patch should open a way to call PMUFW with this request.
Here is example of PMUFW config fragment which enables config reloading.
/* SET CONFIG SECTION */
PM_CONFIG_SET_CONFIG_SECTION_ID, /* Section ID */
PM_CONFIG_IPI_PSU_CORTEXA53_0_MASK | PM_CONFIG_IPI_PSU_CORTEXR5_0_MASK |
PM_CONFIG_IPI_PSU_CORTEXR5_1_MASK, /* Permissions to set config */
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/board/xilinx/zynqmp/cmds.c b/board/xilinx/zynqmp/cmds.c
index 0f1f269..c0d28a7 100644
--- a/board/xilinx/zynqmp/cmds.c
+++ b/board/xilinx/zynqmp/cmds.c
@@ -130,8 +130,27 @@
}
#endif
+static int do_zynqmp_pmufw(struct cmd_tbl *cmdtp, int flag, int argc,
+ char * const argv[])
+{
+ u32 addr, size;
+
+ if (argc != cmdtp->maxargs)
+ return CMD_RET_USAGE;
+
+ addr = simple_strtoul(argv[2], NULL, 16);
+ size = simple_strtoul(argv[3], NULL, 16);
+ flush_dcache_range((ulong)addr, (ulong)(addr + size));
+
+ zynqmp_pmufw_load_config_object((const void *)(uintptr_t)addr,
+ (size_t)size);
+
+ return 0;
+}
+
static struct cmd_tbl cmd_zynqmp_sub[] = {
U_BOOT_CMD_MKENT(secure, 5, 0, do_zynqmp_verify_secure, "", ""),
+ U_BOOT_CMD_MKENT(pmufw, 4, 0, do_zynqmp_pmufw, "", ""),
U_BOOT_CMD_MKENT(mmio_read, 3, 0, do_zynqmp_mmio_read, "", ""),
U_BOOT_CMD_MKENT(mmio_write, 5, 0, do_zynqmp_mmio_write, "", ""),
#ifdef CONFIG_DEFINE_TCM_OCM_MMAP
@@ -184,6 +203,7 @@
" to be initialized. Supported modes will be\n"
" lock(0)/split(1)\n"
#endif
+ "zynqmp pmufw address size - load PMU FW configuration object\n"
;
#endif