mtk-lk/platform/mt6755/mt_latch.c

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#include <reg.h>
#include <latch.h>
#include <debug.h>
#include <mt_reg_base.h>

int plat_lastpc_dump(const struct plt_cfg_pc_latch *self, char *buf, int *wp)
{
	unsigned int i, cpu_in_cluster = 0, cluster, addr;
	unsigned long long pc_value_h, fp_value_h, sp_value_h;
	unsigned long long pc_value, fp_value, sp_value;

	for (i = 0; i < self->nr_max_core; i++) {
		cluster = i / 4;
		cpu_in_cluster = i % 4;
		addr = MCUCFG_BASE + 0x410 + (cpu_in_cluster << 5) + (0x100 * cluster);

		if (g_is_64bit_kernel) {
			pc_value_h = readl(addr + 0x04);
			pc_value   = readl(addr + 0x00) | (pc_value_h << 32);
			fp_value_h = readl(addr + 0x14);
			fp_value   = readl(addr + 0x10) | (fp_value_h << 32);
			sp_value_h = readl(addr + 0x1C);
			sp_value   = readl(addr + 0x18) | (sp_value_h << 32);

		} else {
			pc_value = readl(addr + 0x00);
			fp_value = readl(addr + 0x08);
			sp_value = readl(addr + 0x0C);
		}

		*wp += snprintf(buf + *wp, LATCH_BUF_LENGTH - *wp,
				"[LAST PC] CORE_%d PC = 0x%016llx, FP = 0x%016llx, SP = 0x%016llx\n",
				i, pc_value, fp_value, sp_value);
	}

	*wp += snprintf(buf + *wp, LATCH_BUF_LENGTH - *wp, "\n");
	return 1;
}