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arm64: zynqmp: Add command for disabling loading other overlays

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Add command "zynqmp pmufw node close" to disable permission to load
additional pmufw config overlays. This command will make sure that any
other sw will ask for changing permission.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/cfa5cc7909eb8deb23eb0f11c26954cbaddeb861.1642163135.git.michal.simek@xilinx.com
This commit is contained in:
Michal Simek
2022-01-14 13:25:38 +01:00
parent c750c6dbb2
commit fac46bc446
3 changed files with 36 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
board/xilinx/zynqmp/cmds.c
View File

@@ -209,6 +209,19 @@ static int do_zynqmp_pmufw(struct cmd_tbl *cmdtp, int flag, int argc,
if (argc != cmdtp->maxargs)
return CMD_RET_USAGE;
if (!strncmp(argv[2], "node", 4)) {
u32 id;
if (!strncmp(argv[3], "close", 5))
return zynqmp_pmufw_config_close();
id = dectoul(argv[3], NULL);
printf("Enable permission for node ID %d\n", id);
return zynqmp_pmufw_node(id);
}
addr = hextoul(argv[2], NULL);
size = hextoul(argv[3], NULL);
@@ -416,6 +429,9 @@ static char zynqmp_help_text[] =
" lock(0)/split(1)\n"
#endif
"zynqmp pmufw address size - load PMU FW configuration object\n"
"zynqmp pmufw node <id> - load PMU FW configuration object\n"
"zynqmp pmufw node close - disable config object loading\n"
" node: keyword, id: NODE_ID in decimal format\n"
"zynqmp rsa srcaddr srclen mod exp rsaop -\n"
" Performs RSA encryption and RSA decryption on blob of data\n"
" at srcaddr and puts it back in srcaddr using modulus and\n"

19
drivers/firmware/firmware-zynqmp.c
View File

@@ -49,6 +49,25 @@ static unsigned int xpm_configobject[] = {
PM_CONFIG_IPI_PSU_CORTEXR5_1_MASK, /* IPI Mask */
};
static unsigned int xpm_configobject_close[] = {
/**********************************************************************/
/* HEADER */
2, /* Number of remaining words in the header */
1, /* Number of sections included in config object */
PM_CONFIG_OBJECT_TYPE_OVERLAY, /* Type of Config object as overlay */
/**********************************************************************/
/* SET CONFIG SECTION */
PM_CONFIG_SET_CONFIG_SECTION_ID,
0U, /* Loading permission to Overlay config object */
};
int zynqmp_pmufw_config_close(void)
{
zynqmp_pmufw_load_config_object(xpm_configobject_close,
sizeof(xpm_configobject_close));
return 0;
}
int zynqmp_pmufw_node(u32 id)
{
/* Record power domain id */

1
include/zynqmp_firmware.h
View File

@@ -368,6 +368,7 @@ enum pm_ioctl_id {
unsigned int zynqmp_firmware_version(void);
int zynqmp_pmufw_node(u32 id);
int zynqmp_pmufw_config_close(void);
void zynqmp_pmufw_load_config_object(const void *cfg_obj, size_t size);
int xilinx_pm_request(u32 api_id, u32 arg0, u32 arg1, u32 arg2,
u32 arg3, u32 *ret_payload);