diff options
Diffstat (limited to 'arch/arc/kernel/setup.c')
| -rw-r--r-- | arch/arc/kernel/setup.c | 63 |
1 files changed, 52 insertions, 11 deletions
diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 1d167c6df8ca..a3d186211ed3 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -30,6 +30,8 @@ #define FIX_PTR(x) __asm__ __volatile__(";" : "+r"(x)) +unsigned int intr_to_DE_cnt; + /* Part of U-boot ABI: see head.S */ int __initdata uboot_tag; char __initdata *uboot_arg; @@ -54,7 +56,7 @@ static void read_arc_build_cfg_regs(void) cpu->vec_base = read_aux_reg(AUX_INTR_VEC_BASE); READ_BCR(ARC_REG_D_UNCACH_BCR, uncached_space); - cpu->uncached_base = uncached_space.start << 24; + BUG_ON((uncached_space.start << 24) != ARC_UNCACHED_ADDR_SPACE); READ_BCR(ARC_REG_MUL_BCR, cpu->extn_mpy); @@ -96,7 +98,7 @@ static void read_arc_build_cfg_regs(void) read_decode_mmu_bcr(); read_decode_cache_bcr(); - { + if (is_isa_arcompact()) { struct bcr_fp_arcompact sp, dp; struct bcr_bpu_arcompact bpu; @@ -112,6 +114,19 @@ static void read_arc_build_cfg_regs(void) cpu->bpu.num_cache = 256 << (bpu.ent - 1); cpu->bpu.num_pred = 256 << (bpu.ent - 1); } + } else { + struct bcr_fp_arcv2 spdp; + struct bcr_bpu_arcv2 bpu; + + READ_BCR(ARC_REG_FP_V2_BCR, spdp); + cpu->extn.fpu_sp = spdp.sp ? 1 : 0; + cpu->extn.fpu_dp = spdp.dp ? 1 : 0; + + READ_BCR(ARC_REG_BPU_BCR, bpu); + cpu->bpu.ver = bpu.ver; + cpu->bpu.full = bpu.ft; + cpu->bpu.num_cache = 256 << bpu.bce; + cpu->bpu.num_pred = 2048 << bpu.pte; } READ_BCR(ARC_REG_AP_BCR, bcr); @@ -131,6 +146,7 @@ static const struct cpuinfo_data arc_cpu_tbl[] = { { {0x30, "ARC 700" }, 0x33}, { {0x34, "ARC 700 R4.10"}, 0x34}, { {0x35, "ARC 700 R4.11"}, 0x35}, + { {0x50, "ARC HS38" }, 0x51}, { {0x00, NULL } } }; @@ -149,13 +165,17 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) FIX_PTR(cpu); - { + if (is_isa_arcompact()) { isa_nm = "ARCompact"; be = IS_ENABLED(CONFIG_CPU_BIG_ENDIAN); atomic = cpu->isa.atomic1; if (!cpu->isa.ver) /* ISA BCR absent, use Kconfig info */ atomic = IS_ENABLED(CONFIG_ARC_HAS_LLSC); + } else { + isa_nm = "ARCv2"; + be = cpu->isa.be; + atomic = cpu->isa.atomic; } n += scnprintf(buf + n, len - n, @@ -183,16 +203,34 @@ static char *arc_cpu_mumbojumbo(int cpu_id, char *buf, int len) n += scnprintf(buf + n, len - n, "Timers\t\t: %s%s%s%s\nISA Extn\t: ", IS_AVAIL1(cpu->timers.t0, "Timer0 "), IS_AVAIL1(cpu->timers.t1, "Timer1 "), - IS_AVAIL2(cpu->timers.rtsc, "64-bit RTSC ", CONFIG_ARC_HAS_RTSC)); + IS_AVAIL2(cpu->timers.rtc, "64-bit RTC ", + CONFIG_ARC_HAS_RTC)); - n += i = scnprintf(buf + n, len - n, "%s%s", - IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC)); + n += i = scnprintf(buf + n, len - n, "%s%s%s%s%s", + IS_AVAIL2(atomic, "atomic ", CONFIG_ARC_HAS_LLSC), + IS_AVAIL2(cpu->isa.ldd, "ll64 ", CONFIG_ARC_HAS_LL64), + IS_AVAIL1(cpu->isa.unalign, "unalign (not used)")); if (i) n += scnprintf(buf + n, len - n, "\n\t\t: "); + if (cpu->extn_mpy.ver) { + if (cpu->extn_mpy.ver <= 0x2) { /* ARCompact */ + n += scnprintf(buf + n, len - n, "mpy "); + } else { + int opt = 2; /* stock MPY/MPYH */ + + if (cpu->extn_mpy.dsp) /* OPT 7-9 */ + opt = cpu->extn_mpy.dsp + 6; + + n += scnprintf(buf + n, len - n, "mpy[opt %d] ", opt); + } + n += scnprintf(buf + n, len - n, "%s", + IS_USED(CONFIG_ARC_HAS_HW_MPY)); + } + n += scnprintf(buf + n, len - n, "%s%s%s%s%s%s%s%s\n", - IS_AVAIL1(cpu->extn_mpy.ver, "mpy "), + IS_AVAIL1(cpu->isa.div_rem, "div_rem "), IS_AVAIL1(cpu->extn.norm, "norm "), IS_AVAIL1(cpu->extn.barrel, "barrel-shift "), IS_AVAIL1(cpu->extn.swap, "swap "), @@ -219,7 +257,7 @@ static char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) n += scnprintf(buf + n, len - n, "Vector Table\t: %#x\nUncached Base\t: %#x\n", - cpu->vec_base, cpu->uncached_base); + cpu->vec_base, ARC_UNCACHED_ADDR_SPACE); if (cpu->extn.fpu_sp || cpu->extn.fpu_dp) n += scnprintf(buf + n, len - n, "FPU\t\t: %s%s\n", @@ -254,8 +292,8 @@ static void arc_chk_core_config(void) if (!cpu->timers.t1) panic("Timer1 is not present!\n"); - if (IS_ENABLED(CONFIG_ARC_HAS_RTSC) && !cpu->timers.rtsc) - panic("RTSC is not present\n"); + if (IS_ENABLED(CONFIG_ARC_HAS_RTC) && !cpu->timers.rtc) + panic("RTC is not present\n"); #ifdef CONFIG_ARC_HAS_DCCM /* @@ -323,13 +361,16 @@ static inline int is_kernel(unsigned long addr) void __init setup_arch(char **cmdline_p) { +#ifdef CONFIG_ARC_UBOOT_SUPPORT /* make sure that uboot passed pointer to cmdline/dtb is valid */ if (uboot_tag && is_kernel((unsigned long)uboot_arg)) panic("Invalid uboot arg\n"); /* See if u-boot passed an external Device Tree blob */ machine_desc = setup_machine_fdt(uboot_arg); /* uboot_tag == 2 */ - if (!machine_desc) { + if (!machine_desc) +#endif + { /* No, so try the embedded one */ machine_desc = setup_machine_fdt(__dtb_start); if (!machine_desc) |