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xilinx: zynqmp: Enable pmufw config reloading

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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>
This commit is contained in:
Michal Simek 2020-04-27 11:26:31 +02:00
parent 3ccea69fc4
commit e20d88bffa
1 changed files with 20 additions and 0 deletions
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20
board/xilinx/zynqmp/cmds.c
View file

@ -130,8 +130,27 @@ static int do_zynqmp_tcm_init(struct cmd_tbl *cmdtp, int flag, int argc,
}
#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 @@ static char zynqmp_help_text[] =
" 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