diff options
Diffstat (limited to 'arch/arc')
31 files changed, 76 insertions, 99 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index 9d5fd00..f3a80cf 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -463,9 +463,6 @@ config ARCH_PHYS_ADDR_T_64BIT config ARCH_DMA_ADDR_T_64BIT bool -config ARC_PLAT_NEEDS_PHYS_TO_DMA - bool - config ARC_KVADDR_SIZE int "Kernel Virtual Address Space size (MB)" range 0 512 diff --git a/arch/arc/boot/dts/axc003.dtsi b/arch/arc/boot/dts/axc003.dtsi index 4e6e9f5..dc91c66 100644 --- a/arch/arc/boot/dts/axc003.dtsi +++ b/arch/arc/boot/dts/axc003.dtsi @@ -35,6 +35,14 @@ reg = <0x80 0x10>, <0x100 0x10>; #clock-cells = <0>; clocks = <&input_clk>; + + /* + * Set initial core pll output frequency to 90MHz. + * It will be applied at the core pll driver probing + * on early boot. + */ + assigned-clocks = <&core_clk>; + assigned-clock-rates = <90000000>; }; core_intc: archs-intc@cpu { diff --git a/arch/arc/boot/dts/axc003_idu.dtsi b/arch/arc/boot/dts/axc003_idu.dtsi index 63954a8..69ff4895 100644 --- a/arch/arc/boot/dts/axc003_idu.dtsi +++ b/arch/arc/boot/dts/axc003_idu.dtsi @@ -35,6 +35,14 @@ reg = <0x80 0x10>, <0x100 0x10>; #clock-cells = <0>; clocks = <&input_clk>; + + /* + * Set initial core pll output frequency to 100MHz. + * It will be applied at the core pll driver probing + * on early boot. + */ + assigned-clocks = <&core_clk>; + assigned-clock-rates = <100000000>; }; core_intc: archs-intc@cpu { diff --git a/arch/arc/boot/dts/hsdk.dts b/arch/arc/boot/dts/hsdk.dts index 8f627c2..006aa3d 100644 --- a/arch/arc/boot/dts/hsdk.dts +++ b/arch/arc/boot/dts/hsdk.dts @@ -114,6 +114,14 @@ reg = <0x00 0x10>, <0x14B8 0x4>; #clock-cells = <0>; clocks = <&input_clk>; + + /* + * Set initial core pll output frequency to 1GHz. + * It will be applied at the core pll driver probing + * on early boot. + */ + assigned-clocks = <&core_clk>; + assigned-clock-rates = <1000000000>; }; serial: serial@5000 { diff --git a/arch/arc/configs/axs101_defconfig b/arch/arc/configs/axs101_defconfig index ec7c849..09f8515 100644 --- a/arch/arc/configs/axs101_defconfig +++ b/arch/arc/configs/axs101_defconfig @@ -44,7 +44,6 @@ CONFIG_IP_PNP_RARP=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_NETDEVICES=y diff --git a/arch/arc/configs/axs103_defconfig b/arch/arc/configs/axs103_defconfig index 63d3cf6..09fed3e 100644 --- a/arch/arc/configs/axs103_defconfig +++ b/arch/arc/configs/axs103_defconfig @@ -44,7 +44,6 @@ CONFIG_IP_PNP_RARP=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_BLK_DEV_LOOP=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y diff --git a/arch/arc/configs/axs103_smp_defconfig b/arch/arc/configs/axs103_smp_defconfig index f613eca..ea2f6d8 100644 --- a/arch/arc/configs/axs103_smp_defconfig +++ b/arch/arc/configs/axs103_smp_defconfig @@ -45,7 +45,6 @@ CONFIG_IP_PNP_RARP=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_BLK_DEV_LOOP=y CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y diff --git a/arch/arc/configs/haps_hs_defconfig b/arch/arc/configs/haps_hs_defconfig index db04ea4..ab231c0 100644 --- a/arch/arc/configs/haps_hs_defconfig +++ b/arch/arc/configs/haps_hs_defconfig @@ -40,7 +40,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y # CONFIG_NET_VENDOR_ARC is not set diff --git a/arch/arc/configs/haps_hs_smp_defconfig b/arch/arc/configs/haps_hs_smp_defconfig index 3507be2..cf449cb 100644 --- a/arch/arc/configs/haps_hs_smp_defconfig +++ b/arch/arc/configs/haps_hs_smp_defconfig @@ -43,7 +43,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y # CONFIG_NET_VENDOR_ARC is not set diff --git a/arch/arc/configs/hsdk_defconfig b/arch/arc/configs/hsdk_defconfig index 7b8f8fa..1b54c72 100644 --- a/arch/arc/configs/hsdk_defconfig +++ b/arch/arc/configs/hsdk_defconfig @@ -32,7 +32,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_SCSI=y CONFIG_BLK_DEV_SD=y CONFIG_NETDEVICES=y @@ -49,10 +48,11 @@ CONFIG_SERIAL_8250_DW=y CONFIG_SERIAL_OF_PLATFORM=y # CONFIG_HW_RANDOM is not set # CONFIG_HWMON is not set +CONFIG_DRM=y +# CONFIG_DRM_FBDEV_EMULATION is not set +CONFIG_DRM_UDL=y CONFIG_FB=y -CONFIG_FB_UDL=y CONFIG_FRAMEBUFFER_CONSOLE=y -CONFIG_USB=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_HCD_PLATFORM=y CONFIG_USB_OHCI_HCD=y diff --git a/arch/arc/configs/nsim_700_defconfig b/arch/arc/configs/nsim_700_defconfig index 6dff83a..31c2c70 100644 --- a/arch/arc/configs/nsim_700_defconfig +++ b/arch/arc/configs/nsim_700_defconfig @@ -36,7 +36,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y CONFIG_ARC_EMAC=y diff --git a/arch/arc/configs/nsim_hs_defconfig b/arch/arc/configs/nsim_hs_defconfig index 31ee51b..a578c72 100644 --- a/arch/arc/configs/nsim_hs_defconfig +++ b/arch/arc/configs/nsim_hs_defconfig @@ -40,7 +40,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set # CONFIG_INPUT_MOUSEDEV_PSAUX is not set # CONFIG_INPUT_KEYBOARD is not set diff --git a/arch/arc/configs/nsim_hs_smp_defconfig b/arch/arc/configs/nsim_hs_smp_defconfig index 8d3b1f6..37d7395 100644 --- a/arch/arc/configs/nsim_hs_smp_defconfig +++ b/arch/arc/configs/nsim_hs_smp_defconfig @@ -39,7 +39,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set # CONFIG_INPUT_MOUSEDEV_PSAUX is not set # CONFIG_INPUT_KEYBOARD is not set diff --git a/arch/arc/configs/nsimosci_defconfig b/arch/arc/configs/nsimosci_defconfig index 6168ce2..1e1470e 100644 --- a/arch/arc/configs/nsimosci_defconfig +++ b/arch/arc/configs/nsimosci_defconfig @@ -35,7 +35,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y CONFIG_EZCHIP_NPS_MANAGEMENT_ENET=y diff --git a/arch/arc/configs/nsimosci_hs_defconfig b/arch/arc/configs/nsimosci_hs_defconfig index a70bdeb..084a6e4 100644 --- a/arch/arc/configs/nsimosci_hs_defconfig +++ b/arch/arc/configs/nsimosci_hs_defconfig @@ -36,7 +36,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y CONFIG_EZCHIP_NPS_MANAGEMENT_ENET=y diff --git a/arch/arc/configs/nsimosci_hs_smp_defconfig b/arch/arc/configs/nsimosci_hs_smp_defconfig index ef96406..f36d479 100644 --- a/arch/arc/configs/nsimosci_hs_smp_defconfig +++ b/arch/arc/configs/nsimosci_hs_smp_defconfig @@ -39,7 +39,6 @@ CONFIG_INET=y CONFIG_DEVTMPFS=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set # CONFIG_BLK_DEV is not set CONFIG_NETDEVICES=y # CONFIG_NET_VENDOR_ARC is not set diff --git a/arch/arc/configs/tb10x_defconfig b/arch/arc/configs/tb10x_defconfig index f301825..1aca2e8 100644 --- a/arch/arc/configs/tb10x_defconfig +++ b/arch/arc/configs/tb10x_defconfig @@ -42,7 +42,6 @@ CONFIG_IP_MULTICAST=y # CONFIG_IPV6 is not set # CONFIG_WIRELESS is not set CONFIG_DEVTMPFS=y -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_NETDEVICES=y # CONFIG_NET_CADENCE is not set # CONFIG_NET_VENDOR_BROADCOM is not set diff --git a/arch/arc/configs/vdk_hs38_defconfig b/arch/arc/configs/vdk_hs38_defconfig index 4fcf4f2..f629493 100644 --- a/arch/arc/configs/vdk_hs38_defconfig +++ b/arch/arc/configs/vdk_hs38_defconfig @@ -31,7 +31,6 @@ CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_MTD=y CONFIG_MTD_CMDLINE_PARTS=y CONFIG_MTD_BLOCK=y diff --git a/arch/arc/configs/vdk_hs38_smp_defconfig b/arch/arc/configs/vdk_hs38_smp_defconfig index 7b71464..21f0ca2 100644 --- a/arch/arc/configs/vdk_hs38_smp_defconfig +++ b/arch/arc/configs/vdk_hs38_smp_defconfig @@ -34,7 +34,6 @@ CONFIG_DEVTMPFS=y CONFIG_DEVTMPFS_MOUNT=y # CONFIG_STANDALONE is not set # CONFIG_PREVENT_FIRMWARE_BUILD is not set -# CONFIG_FIRMWARE_IN_KERNEL is not set CONFIG_MTD=y CONFIG_MTD_CMDLINE_PARTS=y CONFIG_MTD_BLOCK=y diff --git a/arch/arc/include/asm/dma-mapping.h b/arch/arc/include/asm/dma-mapping.h index 9428503..7a16824 100644 --- a/arch/arc/include/asm/dma-mapping.h +++ b/arch/arc/include/asm/dma-mapping.h @@ -11,13 +11,6 @@ #ifndef ASM_ARC_DMA_MAPPING_H #define ASM_ARC_DMA_MAPPING_H -#ifndef CONFIG_ARC_PLAT_NEEDS_PHYS_TO_DMA -#define plat_dma_to_phys(dev, dma_handle) ((phys_addr_t)(dma_handle)) -#define plat_phys_to_dma(dev, paddr) ((dma_addr_t)(paddr)) -#else -#include <plat/dma.h> -#endif - extern const struct dma_map_ops arc_dma_ops; static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) diff --git a/arch/arc/include/asm/hugepage.h b/arch/arc/include/asm/hugepage.h index b18fcb6..dc8ee01 100644 --- a/arch/arc/include/asm/hugepage.h +++ b/arch/arc/include/asm/hugepage.h @@ -74,4 +74,7 @@ extern pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp); extern void flush_pmd_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); +/* We don't have hardware dirty/accessed bits, generic_pmdp_establish is fine.*/ +#define pmdp_establish generic_pmdp_establish + #endif diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index 2d79e52..c85947b 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -62,9 +62,6 @@ struct thread_info { .addr_limit = KERNEL_DS, \ } -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - static inline __attribute_const__ struct thread_info *current_thread_info(void) { register unsigned long sp asm("sp"); diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h index f35974e..c9173c0 100644 --- a/arch/arc/include/asm/uaccess.h +++ b/arch/arc/include/asm/uaccess.h @@ -668,6 +668,7 @@ __arc_strncpy_from_user(char *dst, const char __user *src, long count) return 0; __asm__ __volatile__( + " mov lp_count, %5 \n" " lp 3f \n" "1: ldb.ab %3, [%2, 1] \n" " breq.d %3, 0, 3f \n" @@ -684,8 +685,8 @@ __arc_strncpy_from_user(char *dst, const char __user *src, long count) " .word 1b, 4b \n" " .previous \n" : "+r"(res), "+r"(dst), "+r"(src), "=r"(val) - : "g"(-EFAULT), "l"(count) - : "memory"); + : "g"(-EFAULT), "r"(count) + : "lp_count", "lp_start", "lp_end", "memory"); return res; } diff --git a/arch/arc/include/uapi/asm/Kbuild b/arch/arc/include/uapi/asm/Kbuild index fa6d0ff..170b5db 100644 --- a/arch/arc/include/uapi/asm/Kbuild +++ b/arch/arc/include/uapi/asm/Kbuild @@ -3,6 +3,7 @@ include include/uapi/asm-generic/Kbuild.asm generic-y += auxvec.h generic-y += bitsperlong.h +generic-y += bpf_perf_event.h generic-y += errno.h generic-y += fcntl.h generic-y += ioctl.h diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index 7ef7d9a..9d27331 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -199,7 +199,7 @@ static void read_arc_build_cfg_regs(void) unsigned int exec_ctrl; READ_BCR(AUX_EXEC_CTRL, exec_ctrl); - cpu->extn.dual_enb = exec_ctrl & 1; + cpu->extn.dual_enb = !(exec_ctrl & 1); /* dual issue always present for this core */ cpu->extn.dual = 1; diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c index 74315f3..bf40e06 100644 --- a/arch/arc/kernel/stacktrace.c +++ b/arch/arc/kernel/stacktrace.c @@ -163,7 +163,7 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs, */ static int __print_sym(unsigned int address, void *unused) { - __print_symbol(" %s\n", address); + printk(" %pS\n", (void *)address); return 0; } diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c index bcd7c9f..b123558 100644 --- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -65,12 +65,14 @@ unhandled_exception(const char *str, struct pt_regs *regs, siginfo_t *info) #define DO_ERROR_INFO(signr, str, name, sicode) \ int name(unsigned long address, struct pt_regs *regs) \ { \ - siginfo_t info = { \ - .si_signo = signr, \ - .si_errno = 0, \ - .si_code = sicode, \ - .si_addr = (void __user *)address, \ - }; \ + siginfo_t info; \ + \ + clear_siginfo(&info); \ + info.si_signo = signr; \ + info.si_errno = 0; \ + info.si_code = sicode; \ + info.si_addr = (void __user *)address; \ + \ return unhandled_exception(str, regs, &info);\ } @@ -83,6 +85,7 @@ DO_ERROR_INFO(SIGILL, "Illegal Insn (or Seq)", insterror_is_error, ILL_ILLOPC) DO_ERROR_INFO(SIGBUS, "Invalid Mem Access", __weak do_memory_error, BUS_ADRERR) DO_ERROR_INFO(SIGTRAP, "Breakpoint Set", trap_is_brkpt, TRAP_BRKPT) DO_ERROR_INFO(SIGBUS, "Misaligned Access", do_misaligned_error, BUS_ADRALN) +DO_ERROR_INFO(SIGSEGV, "gcc generated __builtin_trap", do_trap5_error, 0) /* * Entry Point for Misaligned Data access Exception, for emulating in software @@ -115,6 +118,8 @@ void do_machine_check_fault(unsigned long address, struct pt_regs *regs) * Thus TRAP_S <n> can be used for specific purpose * -1 used for software breakpointing (gdb) * -2 used by kprobes + * -5 __builtin_trap() generated by gcc (2018.03 onwards) for toggle such as + * -fno-isolate-erroneous-paths-dereference */ void do_non_swi_trap(unsigned long address, struct pt_regs *regs) { @@ -134,6 +139,9 @@ void do_non_swi_trap(unsigned long address, struct pt_regs *regs) kgdb_trap(regs); break; + case 5: + do_trap5_error(address, regs); + break; default: break; } @@ -155,3 +163,11 @@ void do_insterror_or_kprobe(unsigned long address, struct pt_regs *regs) insterror_is_error(address, regs); } + +/* + * abort() call generated by older gcc for __builtin_trap() + */ +void abort(void) +{ + __asm__ __volatile__("trap_s 5\n"); +} diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c index 7d8c1d6..6e9a0a9 100644 --- a/arch/arc/kernel/troubleshoot.c +++ b/arch/arc/kernel/troubleshoot.c @@ -163,6 +163,9 @@ static void show_ecr_verbose(struct pt_regs *regs) else pr_cont("Bus Error, check PRM\n"); #endif + } else if (vec == ECR_V_TRAP) { + if (regs->ecr_param == 5) + pr_cont("gcc generated __builtin_trap\n"); } else { pr_cont("Check Programmer's Manual\n"); } diff --git a/arch/arc/mm/dma.c b/arch/arc/mm/dma.c index e9d9360..1dcc404 100644 --- a/arch/arc/mm/dma.c +++ b/arch/arc/mm/dma.c @@ -60,7 +60,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size, /* This is linear addr (0x8000_0000 based) */ paddr = page_to_phys(page); - *dma_handle = plat_phys_to_dma(dev, paddr); + *dma_handle = paddr; /* This is kernel Virtual address (0x7000_0000 based) */ if (need_kvaddr) { @@ -92,7 +92,7 @@ static void *arc_dma_alloc(struct device *dev, size_t size, static void arc_dma_free(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle, unsigned long attrs) { - phys_addr_t paddr = plat_dma_to_phys(dev, dma_handle); + phys_addr_t paddr = dma_handle; struct page *page = virt_to_page(paddr); int is_non_coh = 1; @@ -111,7 +111,7 @@ static int arc_dma_mmap(struct device *dev, struct vm_area_struct *vma, { unsigned long user_count = vma_pages(vma); unsigned long count = PAGE_ALIGN(size) >> PAGE_SHIFT; - unsigned long pfn = __phys_to_pfn(plat_dma_to_phys(dev, dma_addr)); + unsigned long pfn = __phys_to_pfn(dma_addr); unsigned long off = vma->vm_pgoff; int ret = -ENXIO; @@ -175,7 +175,7 @@ static dma_addr_t arc_dma_map_page(struct device *dev, struct page *page, if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) _dma_cache_sync(paddr, size, dir); - return plat_phys_to_dma(dev, paddr); + return paddr; } /* @@ -190,7 +190,7 @@ static void arc_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir, unsigned long attrs) { - phys_addr_t paddr = plat_dma_to_phys(dev, handle); + phys_addr_t paddr = handle; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) _dma_cache_sync(paddr, size, dir); @@ -224,13 +224,13 @@ static void arc_dma_unmap_sg(struct device *dev, struct scatterlist *sg, static void arc_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) { - _dma_cache_sync(plat_dma_to_phys(dev, dma_handle), size, DMA_FROM_DEVICE); + _dma_cache_sync(dma_handle, size, DMA_FROM_DEVICE); } static void arc_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir) { - _dma_cache_sync(plat_dma_to_phys(dev, dma_handle), size, DMA_TO_DEVICE); + _dma_cache_sync(dma_handle, size, DMA_TO_DEVICE); } static void arc_dma_sync_sg_for_cpu(struct device *dev, diff --git a/arch/arc/plat-axs10x/axs10x.c b/arch/arc/plat-axs10x/axs10x.c index f1ac679..46544e8 100644 --- a/arch/arc/plat-axs10x/axs10x.c +++ b/arch/arc/plat-axs10x/axs10x.c @@ -317,25 +317,23 @@ static void __init axs103_early_init(void) * Instead of duplicating defconfig/DT for SMP/QUAD, add a small hack * of fudging the freq in DT */ +#define AXS103_QUAD_CORE_CPU_FREQ_HZ 50000000 + unsigned int num_cores = (read_aux_reg(ARC_REG_MCIP_BCR) >> 16) & 0x3F; if (num_cores > 2) { - u32 freq = 50, orig; - /* - * TODO: use cpu node "cpu-freq" param instead of platform-specific - * "/cpu_card/core_clk" as it works only if we use fixed-clock for cpu. - */ + u32 freq; int off = fdt_path_offset(initial_boot_params, "/cpu_card/core_clk"); const struct fdt_property *prop; prop = fdt_get_property(initial_boot_params, off, - "clock-frequency", NULL); - orig = be32_to_cpu(*(u32*)(prop->data)) / 1000000; + "assigned-clock-rates", NULL); + freq = be32_to_cpu(*(u32 *)(prop->data)); /* Patching .dtb in-place with new core clock value */ - if (freq != orig ) { - freq = cpu_to_be32(freq * 1000000); + if (freq != AXS103_QUAD_CORE_CPU_FREQ_HZ) { + freq = cpu_to_be32(AXS103_QUAD_CORE_CPU_FREQ_HZ); fdt_setprop_inplace(initial_boot_params, off, - "clock-frequency", &freq, sizeof(freq)); + "assigned-clock-rates", &freq, sizeof(freq)); } } #endif diff --git a/arch/arc/plat-hsdk/platform.c b/arch/arc/plat-hsdk/platform.c index fd0ae5e..2958aed 100644 --- a/arch/arc/plat-hsdk/platform.c +++ b/arch/arc/plat-hsdk/platform.c @@ -38,42 +38,6 @@ static void __init hsdk_init_per_cpu(unsigned int cpu) #define CREG_PAE (CREG_BASE + 0x180) #define CREG_PAE_UPDATE (CREG_BASE + 0x194) -#define CREG_CORE_IF_CLK_DIV (CREG_BASE + 0x4B8) -#define CREG_CORE_IF_CLK_DIV_2 0x1 -#define CGU_BASE ARC_PERIPHERAL_BASE -#define CGU_PLL_STATUS (ARC_PERIPHERAL_BASE + 0x4) -#define CGU_PLL_CTRL (ARC_PERIPHERAL_BASE + 0x0) -#define CGU_PLL_STATUS_LOCK BIT(0) -#define CGU_PLL_STATUS_ERR BIT(1) -#define CGU_PLL_CTRL_1GHZ 0x3A10 -#define HSDK_PLL_LOCK_TIMEOUT 500 - -#define HSDK_PLL_LOCKED() \ - !!(ioread32((void __iomem *) CGU_PLL_STATUS) & CGU_PLL_STATUS_LOCK) - -#define HSDK_PLL_ERR() \ - !!(ioread32((void __iomem *) CGU_PLL_STATUS) & CGU_PLL_STATUS_ERR) - -static void __init hsdk_set_cpu_freq_1ghz(void) -{ - u32 timeout = HSDK_PLL_LOCK_TIMEOUT; - - /* - * As we set cpu clock which exceeds 500MHz, the divider for the interface - * clock must be programmed to div-by-2. - */ - iowrite32(CREG_CORE_IF_CLK_DIV_2, (void __iomem *) CREG_CORE_IF_CLK_DIV); - - /* Set cpu clock to 1GHz */ - iowrite32(CGU_PLL_CTRL_1GHZ, (void __iomem *) CGU_PLL_CTRL); - - while (!HSDK_PLL_LOCKED() && timeout--) - cpu_relax(); - - if (!HSDK_PLL_LOCKED() || HSDK_PLL_ERR()) - pr_err("Failed to setup CPU frequency to 1GHz!"); -} - #define SDIO_BASE (ARC_PERIPHERAL_BASE + 0xA000) #define SDIO_UHS_REG_EXT (SDIO_BASE + 0x108) #define SDIO_UHS_REG_EXT_DIV_2 (2 << 30) @@ -98,12 +62,6 @@ static void __init hsdk_init_early(void) * minimum possible div-by-2. */ iowrite32(SDIO_UHS_REG_EXT_DIV_2, (void __iomem *) SDIO_UHS_REG_EXT); - - /* - * Setup CPU frequency to 1GHz. - * TODO: remove it after smart hsdk pll driver will be introduced. - */ - hsdk_set_cpu_freq_1ghz(); } static const char *hsdk_compat[] __initconst = { |
