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prom.c


products/Sources/formale Sprachen/C/Linux/arch/mips/lantiq/falcon/prom.c

// SPDX-License-Identifier: GPL-2.0-only /* * * Copyright (C) 2012 Thomas Langer * Copyright (C) 2012 John Crispin */ #include #include #include #include #include #include "../prom.h" #define SOC_FALCON "Falcon" #define SOC_FALCON_D "Falcon-D" #define SOC_FALCON_V "Falcon-V" #define SOC_FALCON_M "Falcon-M" #define COMP_FALCON "lantiq,falcon" #define PART_SHIFT 12 #define PART_MASK 0x0FFFF000 #define REV_SHIFT 28 #define REV_MASK 0xF0000000 #define SREV_SHIFT 22 #define SREV_MASK 0x03C00000 #define TYPE_SHIFT 26 #define TYPE_MASK 0x3C000000 /* reset, nmi and ejtag exception vectors */ #define BOOT_REG_BASE (KSEG1 | 0x1F200000) #define BOOT_RVEC (BOOT_REG_BASE | 0x00) #define BOOT_NVEC (BOOT_REG_BASE | 0x04) #define BOOT_EVEC (BOOT_REG_BASE | 0x08) static void __init ltq_soc_nmi_setup(void) { extern void (*nmi_handler)(void); ltq_w32((unsigned long)&nmi_handler, (void *)BOOT_NVEC); } static void __init ltq_soc_ejtag_setup(void) { extern void (*ejtag_debug_handler)(void); ltq_w32((unsigned long)&ejtag_debug_handler, (void *)BOOT_EVEC); } void __init ltq_soc_detect(struct ltq_soc_info *i) { u32 type; i->partnum = (ltq_r32(FALCON_CHIPID) & PART_MASK) >> PART_SHIFT; i->rev = (ltq_r32(FALCON_CHIPID) & REV_MASK) >> REV_SHIFT; i->srev = ((ltq_r32(FALCON_CHIPCONF) & SREV_MASK) >> SREV_SHIFT); i->compatible = COMP_FALCON; i->type = SOC_TYPE_FALCON; sprintf(i->rev_type, "%c%d%d", (i->srev & 0x4) ? ('B') : ('A'), i->rev & 0x7, (i->srev & 0x3) + 1); switch (i->partnum) { case SOC_ID_FALCON: type = (ltq_r32(FALCON_CHIPTYPE) & TYPE_MASK) >> TYPE_SHIFT; switch (type) { case 0: i->name = SOC_FALCON_D; break; case 1: i->name = SOC_FALCON_V; break; case 2: i->name = SOC_FALCON_M; break; default: i->name = SOC_FALCON; break; } break; default: unreachable(); break; } board_nmi_handler_setup = ltq_soc_nmi_setup; board_ejtag_handler_setup = ltq_soc_ejtag_setup; }

                                                                                                                                                                                                                                                                                                                                                                                                     

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