// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2019 Stephan Gerhold */ #include #include #include #define U8500_BOOTROM_BASE 0x90000000 #define U8500_ASIC_ID_LOC_V2 (U8500_BOOTROM_BASE + 0x1DBF4) int print_cpuinfo(void) { /* Convert ASIC ID to display string, e.g. 0x8520A0 => DB8520 V1.0 */ u32 asicid = readl(U8500_ASIC_ID_LOC_V2); u32 cpu = (asicid >> 8) & 0xffff; u32 rev = asicid & 0xff; /* 0xA0 => 0x10 (V1.0) */ if (rev >= 0xa0) rev -= 0x90; printf("CPU: ST-Ericsson DB%x V%d.%d\n", cpu, rev >> 4, rev & 0xf); return 0; }