diff options
Diffstat (limited to 'arch/arm/cpu/pxa/cpuinfo.c')
-rw-r--r-- | arch/arm/cpu/pxa/cpuinfo.c | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/arch/arm/cpu/pxa/cpuinfo.c b/arch/arm/cpu/pxa/cpuinfo.c deleted file mode 100644 index 549b61d6e0..0000000000 --- a/arch/arm/cpu/pxa/cpuinfo.c +++ /dev/null @@ -1,139 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * PXA CPU information display - * - * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com> - */ - -#include <common.h> -#include <init.h> -#include <asm/io.h> -#include <errno.h> -#include <linux/compiler.h> - -#define CPU_MASK_PXA_PRODID 0x000003f0 -#define CPU_MASK_PXA_REVID 0x0000000f - -#define CPU_MASK_PRODREV (CPU_MASK_PXA_PRODID | CPU_MASK_PXA_REVID) - -#define CPU_VALUE_PXA25X 0x100 -#define CPU_VALUE_PXA27X 0x110 - -static uint32_t pxa_get_cpuid(void) -{ - uint32_t cpuid; - asm volatile("mrc p15, 0, %0, c0, c0, 0" : "=r"(cpuid)); - return cpuid; -} - -int cpu_is_pxa25x(void) -{ - uint32_t id = pxa_get_cpuid(); - id &= CPU_MASK_PXA_PRODID; - return id == CPU_VALUE_PXA25X; -} - -int cpu_is_pxa27x(void) -{ - uint32_t id = pxa_get_cpuid(); - id &= CPU_MASK_PXA_PRODID; - return id == CPU_VALUE_PXA27X; -} - -int cpu_is_pxa27xm(void) -{ - uint32_t id = pxa_get_cpuid(); - return ((id & CPU_MASK_PXA_PRODID) == CPU_VALUE_PXA27X) && - ((id & CPU_MASK_PXA_REVID) == 8); -} - -uint32_t pxa_get_cpu_revision(void) -{ - return pxa_get_cpuid() & CPU_MASK_PRODREV; -} - -#ifdef CONFIG_DISPLAY_CPUINFO -static const char *pxa25x_get_revision(void) -{ - static __maybe_unused const char * const revs_25x[] = { "A0" }; - static __maybe_unused const char * const revs_26x[] = { - "A0", "B0", "B1" - }; - static const char *unknown = "Unknown"; - uint32_t id; - - if (!cpu_is_pxa25x()) - return unknown; - - id = pxa_get_cpuid() & CPU_MASK_PXA_REVID; - -/* PXA26x is a sick special case as it can't be told apart from PXA25x :-( */ -#ifdef CONFIG_CPU_PXA26X - switch (id) { - case 3: return revs_26x[0]; - case 5: return revs_26x[1]; - case 6: return revs_26x[2]; - } -#else - if (id == 6) - return revs_25x[0]; -#endif - return unknown; -} - -static const char *pxa27x_get_revision(void) -{ - static const char *const rev[] = { "A0", "A1", "B0", "B1", "C0", "C5" }; - static const char *unknown = "Unknown"; - uint32_t id; - - if (!cpu_is_pxa27x()) - return unknown; - - id = pxa_get_cpuid() & CPU_MASK_PXA_REVID; - - if ((id == 5) || (id == 6) || (id > 8)) - return unknown; - - /* Cap the special PXA270 C5 case. */ - if (id == 7) - id = 5; - - /* Cap the special PXA270M A1 case. */ - if (id == 8) - id = 1; - - return rev[id]; -} - -static int print_cpuinfo_pxa2xx(void) -{ - if (cpu_is_pxa25x()) { - puts("Marvell PXA25x rev. "); - puts(pxa25x_get_revision()); - } else if (cpu_is_pxa27x()) { - puts("Marvell PXA27x"); - if (cpu_is_pxa27xm()) puts("M"); - puts(" rev. "); - puts(pxa27x_get_revision()); - } else - return -EINVAL; - - puts("\n"); - - return 0; -} - -int print_cpuinfo(void) -{ - int ret; - - puts("CPU: "); - - ret = print_cpuinfo_pxa2xx(); - if (!ret) - return ret; - - return ret; -} -#endif |