#ifndef __ASM_ARM_SYSTEM_H
#define __ASM_ARM_SYSTEM_H
+#include <common.h>
+#include <linux/compiler.h>
+
#ifdef CONFIG_ARM64
/*
#define CR_WXN (1 << 19) /* Write Permision Imply XN */
#define CR_EE (1 << 25) /* Exception (Big) Endian */
-#define PGTABLE_SIZE (0x10000)
+#ifndef __ASSEMBLY__
+
+u64 get_page_table_size(void);
+#define PGTABLE_SIZE get_page_table_size()
+
/* 2MB granularity */
#define MMU_SECTION_SHIFT 21
#define MMU_SECTION_SIZE (1 << MMU_SECTION_SHIFT)
-#ifndef __ASSEMBLY__
-
+/* These constants need to be synced to the MT_ types in asm/armv8/mmu.h */
enum dcache_option {
- DCACHE_OFF = 0x3,
+ DCACHE_OFF = 0 << 2,
+ DCACHE_WRITETHROUGH = 3 << 2,
+ DCACHE_WRITEBACK = 4 << 2,
+ DCACHE_WRITEALLOC = 4 << 2,
};
#define isb() \
void __asm_invalidate_tlb_all(void);
void __asm_invalidate_icache_all(void);
int __asm_flush_l3_cache(void);
+void __asm_switch_ttbr(u64 new_ttbr);
void armv8_switch_to_el2(void);
void armv8_switch_to_el1(void);
void flush_l3_cache(void);
+/*
+ *Issue a hypervisor call in accordance with ARM "SMC Calling convention",
+ * DEN0028A
+ *
+ * @args: input and output arguments
+ *
+ */
+void hvc_call(struct pt_regs *args);
+
+/*
+ *Issue a secure monitor call in accordance with ARM "SMC Calling convention",
+ * DEN0028A
+ *
+ * @args: input and output arguments
+ *
+ */
+void smc_call(struct pt_regs *args);
+
+void __noreturn psci_system_reset(bool smc);
+
#endif /* __ASSEMBLY__ */
#else /* CONFIG_ARM64 */
#define CR_AFE (1 << 29) /* Access flag enable */
#define CR_TE (1 << 30) /* Thumb exception enable */
+#if defined(CONFIG_ARMV7_LPAE) && !defined(PGTABLE_SIZE)
+#define PGTABLE_SIZE (4096 * 5)
+#elif !defined(PGTABLE_SIZE)
#define PGTABLE_SIZE (4096 * 4)
+#endif
/*
* This is used to ensure the compiler did actually allocate the register we
#define wfi()
#endif
+static inline unsigned long get_cpsr(void)
+{
+ unsigned long cpsr;
+
+ asm volatile("mrs %0, cpsr" : "=r"(cpsr): );
+ return cpsr;
+}
+
+static inline int is_hyp(void)
+{
+#ifdef CONFIG_ARMV7_LPAE
+ /* HYP mode requires LPAE ... */
+ return ((get_cpsr() & 0x1f) == 0x1a);
+#else
+ /* ... so without LPAE support we can optimize all hyp code away */
+ return 0;
+#endif
+}
+
static inline unsigned int get_cr(void)
{
unsigned int val;
- asm volatile("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val) : : "cc");
+
+ if (is_hyp())
+ asm volatile("mrc p15, 4, %0, c1, c0, 0 @ get CR" : "=r" (val)
+ :
+ : "cc");
+ else
+ asm volatile("mrc p15, 0, %0, c1, c0, 0 @ get CR" : "=r" (val)
+ :
+ : "cc");
return val;
}
static inline void set_cr(unsigned int val)
{
- asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR"
- : : "r" (val) : "cc");
+ if (is_hyp())
+ asm volatile("mcr p15, 4, %0, c1, c0, 0 @ set CR" :
+ : "r" (val)
+ : "cc");
+ else
+ asm volatile("mcr p15, 0, %0, c1, c0, 0 @ set CR" :
+ : "r" (val)
+ : "cc");
isb();
}
isb();
}
-#ifdef CONFIG_ARMV7
+#ifdef CONFIG_ARMV7_LPAE
+/* Long-Descriptor Translation Table Level 1/2 Bits */
+#define TTB_SECT_XN_MASK (1ULL << 54)
+#define TTB_SECT_NG_MASK (1 << 11)
+#define TTB_SECT_AF (1 << 10)
+#define TTB_SECT_SH_MASK (3 << 8)
+#define TTB_SECT_NS_MASK (1 << 5)
+#define TTB_SECT_AP (1 << 6)
+/* Note: TTB AP bits are set elsewhere */
+#define TTB_SECT_MAIR(x) ((x & 0x7) << 2) /* Index into MAIR */
+#define TTB_SECT (1 << 0)
+#define TTB_PAGETABLE (3 << 0)
+
+/* TTBCR flags */
+#define TTBCR_EAE (1 << 31)
+#define TTBCR_T0SZ(x) ((x) << 0)
+#define TTBCR_T1SZ(x) ((x) << 16)
+#define TTBCR_USING_TTBR0 (TTBCR_T0SZ(0) | TTBCR_T1SZ(0))
+#define TTBCR_IRGN0_NC (0 << 8)
+#define TTBCR_IRGN0_WBWA (1 << 8)
+#define TTBCR_IRGN0_WT (2 << 8)
+#define TTBCR_IRGN0_WBNWA (3 << 8)
+#define TTBCR_IRGN0_MASK (3 << 8)
+#define TTBCR_ORGN0_NC (0 << 10)
+#define TTBCR_ORGN0_WBWA (1 << 10)
+#define TTBCR_ORGN0_WT (2 << 10)
+#define TTBCR_ORGN0_WBNWA (3 << 10)
+#define TTBCR_ORGN0_MASK (3 << 10)
+#define TTBCR_SHARED_NON (0 << 12)
+#define TTBCR_SHARED_OUTER (2 << 12)
+#define TTBCR_SHARED_INNER (3 << 12)
+#define TTBCR_EPD0 (0 << 7)
+
+/*
+ * Memory types
+ */
+#define MEMORY_ATTRIBUTES ((0x00 << (0 * 8)) | (0x88 << (1 * 8)) | \
+ (0xcc << (2 * 8)) | (0xff << (3 * 8)))
+
+/* options available for data cache on each page */
+enum dcache_option {
+ DCACHE_OFF = TTB_SECT | TTB_SECT_MAIR(0),
+ DCACHE_WRITETHROUGH = TTB_SECT | TTB_SECT_MAIR(1),
+ DCACHE_WRITEBACK = TTB_SECT | TTB_SECT_MAIR(2),
+ DCACHE_WRITEALLOC = TTB_SECT | TTB_SECT_MAIR(3),
+};
+#elif defined(CONFIG_CPU_V7)
/* Short-Descriptor Translation Table Level 1 Bits */
#define TTB_SECT_NS_MASK (1 << 19)
#define TTB_SECT_NG_MASK (1 << 17)
#define TTB_SECT_S_MASK (1 << 16)
/* Note: TTB AP bits are set elsewhere */
+#define TTB_SECT_AP (3 << 10)
#define TTB_SECT_TEX(x) ((x & 0x7) << 12)
#define TTB_SECT_DOMAIN(x) ((x & 0xf) << 5)
#define TTB_SECT_XN_MASK (1 << 4)
/* options available for data cache on each page */
enum dcache_option {
- DCACHE_OFF = TTB_SECT_S_MASK | TTB_SECT_DOMAIN(0) |
- TTB_SECT_XN_MASK | TTB_SECT,
+ DCACHE_OFF = TTB_SECT_DOMAIN(0) | TTB_SECT_XN_MASK | TTB_SECT,
DCACHE_WRITETHROUGH = DCACHE_OFF | TTB_SECT_C_MASK,
DCACHE_WRITEBACK = DCACHE_WRITETHROUGH | TTB_SECT_B_MASK,
DCACHE_WRITEALLOC = DCACHE_WRITEBACK | TTB_SECT_TEX(1),
};
#else
+#define TTB_SECT_AP (3 << 10)
/* options available for data cache on each page */
enum dcache_option {
DCACHE_OFF = 0x12,
/* Size of an MMU section */
enum {
- MMU_SECTION_SHIFT = 20,
+#ifdef CONFIG_ARMV7_LPAE
+ MMU_SECTION_SHIFT = 21, /* 2MB */
+#else
+ MMU_SECTION_SHIFT = 20, /* 1MB */
+#endif
MMU_SECTION_SIZE = 1 << MMU_SECTION_SHIFT,
};
-#ifdef CONFIG_ARMV7
+#ifdef CONFIG_CPU_V7
/* TTBR0 bits */
#define TTBR0_BASE_ADDR_MASK 0xFFFFC000
#define TTBR0_RGN_NC (0 << 3)
projects / oweals / u-boot.git / blobdiff