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arm: mach-k3: Add support for device type detection

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K3 SoCs are available in a number of device types such as
GP, HS-FS, EMU, etc. Like OMAP SoCs we can detect this at runtime
and should print this out as part of the SoC information line.
We add this as part of the common.c file as it will be used
to also modify our security state early in the device boot.

Signed-off-by: Andrew Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Andrew Davis 2022-07-15 11:34:32 -05:00 committed by Tom Rini
parent 63de2161e4
commit d1c079557f
3 changed files with 70 additions and 1 deletions
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51
arch/arm/mach-k3/common.c
View File

@ -396,7 +396,54 @@ void reset_cpu(void)
}
#endif
enum k3_device_type get_device_type(void)
{
u32 sys_status = readl(K3_SEC_MGR_SYS_STATUS);
u32 sys_dev_type = (sys_status & SYS_STATUS_DEV_TYPE_MASK) >>
SYS_STATUS_DEV_TYPE_SHIFT;
u32 sys_sub_type = (sys_status & SYS_STATUS_SUB_TYPE_MASK) >>
SYS_STATUS_SUB_TYPE_SHIFT;
switch (sys_dev_type) {
case SYS_STATUS_DEV_TYPE_GP:
return K3_DEVICE_TYPE_GP;
case SYS_STATUS_DEV_TYPE_TEST:
return K3_DEVICE_TYPE_TEST;
case SYS_STATUS_DEV_TYPE_EMU:
return K3_DEVICE_TYPE_EMU;
case SYS_STATUS_DEV_TYPE_HS:
if (sys_sub_type == SYS_STATUS_SUB_TYPE_VAL_FS)
return K3_DEVICE_TYPE_HS_FS;
else
return K3_DEVICE_TYPE_HS_SE;
default:
return K3_DEVICE_TYPE_BAD;
}
}
#if defined(CONFIG_DISPLAY_CPUINFO)
static const char *get_device_type_name(void)
{
enum k3_device_type type = get_device_type();
switch (type) {
case K3_DEVICE_TYPE_GP:
return "GP";
case K3_DEVICE_TYPE_TEST:
return "TEST";
case K3_DEVICE_TYPE_EMU:
return "EMU";
case K3_DEVICE_TYPE_HS_FS:
return "HS-FS";
case K3_DEVICE_TYPE_HS_SE:
return "HS-SE";
default:
return "BAD";
}
}
int print_cpuinfo(void)
{
struct udevice *soc;
@ -418,9 +465,11 @@ int print_cpuinfo(void)
ret = soc_get_revision(soc, name, 64);
if (!ret) {
printf("%s\n", name);
printf("%s ", name);
}
printf("%s\n", get_device_type_name());
return 0;
}
#endif

10
arch/arm/mach-k3/common.h
View File

@ -18,6 +18,15 @@ struct fwl_data {
u16 regions;
};
enum k3_device_type {
K3_DEVICE_TYPE_BAD,
K3_DEVICE_TYPE_GP,
K3_DEVICE_TYPE_TEST,
K3_DEVICE_TYPE_EMU,
K3_DEVICE_TYPE_HS_FS,
K3_DEVICE_TYPE_HS_SE,
};
void setup_k3_mpu_regions(void);
int early_console_init(void);
void disable_linefill_optimization(void);
@ -27,4 +36,5 @@ void k3_sysfw_print_ver(void);
void spl_enable_dcache(void);
void mmr_unlock(phys_addr_t base, u32 partition);
bool is_rom_loaded_sysfw(struct rom_extended_boot_data *data);
enum k3_device_type get_device_type(void);
void ti_secure_image_post_process(void **p_image, size_t *p_size);

10
arch/arm/mach-k3/include/mach/hardware.h
View File

@ -32,6 +32,16 @@
#define JTAG_ID_VARIANT_MASK (0xf << 28)
#define JTAG_ID_PARTNO_SHIFT 12
#define JTAG_ID_PARTNO_MASK (0xffff << 12)
#define K3_SEC_MGR_SYS_STATUS 0x44234100
#define SYS_STATUS_DEV_TYPE_SHIFT 0
#define SYS_STATUS_DEV_TYPE_MASK (0xf)
#define SYS_STATUS_DEV_TYPE_GP 0x3
#define SYS_STATUS_DEV_TYPE_TEST 0x5
#define SYS_STATUS_DEV_TYPE_EMU 0x9
#define SYS_STATUS_DEV_TYPE_HS 0xa
#define SYS_STATUS_SUB_TYPE_SHIFT 8
#define SYS_STATUS_SUB_TYPE_MASK (0xf << 8)
#define SYS_STATUS_SUB_TYPE_VAL_FS 0xa
#define K3_ROM_BOOT_HEADER_MAGIC "EXTBOOT"