Commit 77c3b9cc authored by Peng Fan's avatar Peng Fan Committed by Stefano Babic
Browse files

arm: imx8ulp: support print cpu info



Support print cpu info. the clock function has not been added, it will
be added in following patches.
Signed-off-by: Peng Fan's avatarPeng Fan <peng.fan@nxp.com>
parent 5f17fef8
......@@ -8,4 +8,7 @@
#include <asm/mach-imx/sys_proto.h>
extern unsigned long rom_pointer[];
enum bt_mode get_boot_mode(void);
#endif
......@@ -3,9 +3,67 @@
* Copyright 2021 NXP
*/
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/boot_mode.h>
u32 get_cpu_rev(void)
{
return (MXC_CPU_IMX8ULP << 12) | CHIP_REV_1_0;
}
enum bt_mode get_boot_mode(void)
{
u32 bt0_cfg = 0;
bt0_cfg = readl(CMC0_RBASE + 0x80);
bt0_cfg &= (BT0CFG_LPBOOT_MASK | BT0CFG_DUALBOOT_MASK);
if (!(bt0_cfg & BT0CFG_LPBOOT_MASK)) {
/* No low power boot */
if (bt0_cfg & BT0CFG_DUALBOOT_MASK)
return DUAL_BOOT;
else
return SINGLE_BOOT;
}
return LOW_POWER_BOOT;
}
#if defined(CONFIG_DISPLAY_CPUINFO)
const char *get_imx_type(u32 imxtype)
{
return "8ULP";
}
int print_cpuinfo(void)
{
u32 cpurev;
char cause[18];
cpurev = get_cpu_rev();
printf("CPU: Freescale i.MX%s rev%d.%d at %d MHz\n",
get_imx_type((cpurev & 0xFF000) >> 12),
(cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0,
mxc_get_clock(MXC_ARM_CLK) / 1000000);
printf("Boot mode: ");
switch (get_boot_mode()) {
case LOW_POWER_BOOT:
printf("Low power boot\n");
break;
case DUAL_BOOT:
printf("Dual boot\n");
break;
case SINGLE_BOOT:
default:
printf("Single boot\n");
break;
}
return 0;
}
#endif
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