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db41d65a97
At present panic() is in the vsprintf.h header file. That does not seem like an obvious choice for hang(), even though it relates to panic(). So let's put hang() in its own header. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Migrate a few more files] Signed-off-by: Tom Rini <trini@konsulko.com>
140 lines
3.5 KiB
C
140 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2013
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* David Feng <fenghua@phytium.com.cn>
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*/
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#ifndef _ASM_ARMV8_MMU_H_
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#define _ASM_ARMV8_MMU_H_
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#include <hang.h>
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#include <linux/const.h>
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/*
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* block/section address mask and size definitions.
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*/
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/* PAGE_SHIFT determines the page size */
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#undef PAGE_SIZE
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (~(PAGE_SIZE - 1))
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/***************************************************************/
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/*
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* Memory types
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*/
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#define MT_DEVICE_NGNRNE 0
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#define MT_DEVICE_NGNRE 1
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#define MT_DEVICE_GRE 2
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#define MT_NORMAL_NC 3
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#define MT_NORMAL 4
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#define MEMORY_ATTRIBUTES ((0x00 << (MT_DEVICE_NGNRNE * 8)) | \
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(0x04 << (MT_DEVICE_NGNRE * 8)) | \
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(0x0c << (MT_DEVICE_GRE * 8)) | \
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(0x44 << (MT_NORMAL_NC * 8)) | \
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(UL(0xff) << (MT_NORMAL * 8)))
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/*
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* Hardware page table definitions.
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*
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*/
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#define PTE_TYPE_MASK (3 << 0)
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#define PTE_TYPE_FAULT (0 << 0)
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#define PTE_TYPE_TABLE (3 << 0)
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#define PTE_TYPE_PAGE (3 << 0)
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#define PTE_TYPE_BLOCK (1 << 0)
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#define PTE_TYPE_VALID (1 << 0)
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#define PTE_TABLE_PXN (1UL << 59)
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#define PTE_TABLE_XN (1UL << 60)
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#define PTE_TABLE_AP (1UL << 61)
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#define PTE_TABLE_NS (1UL << 63)
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/*
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* Block
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*/
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#define PTE_BLOCK_MEMTYPE(x) ((x) << 2)
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#define PTE_BLOCK_NS (1 << 5)
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#define PTE_BLOCK_NON_SHARE (0 << 8)
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#define PTE_BLOCK_OUTER_SHARE (2 << 8)
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#define PTE_BLOCK_INNER_SHARE (3 << 8)
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#define PTE_BLOCK_AF (1 << 10)
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#define PTE_BLOCK_NG (1 << 11)
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#define PTE_BLOCK_PXN (UL(1) << 53)
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#define PTE_BLOCK_UXN (UL(1) << 54)
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/*
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* AttrIndx[2:0]
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*/
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#define PMD_ATTRINDX(t) ((t) << 2)
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#define PMD_ATTRINDX_MASK (7 << 2)
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#define PMD_ATTRMASK (PTE_BLOCK_PXN | \
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PTE_BLOCK_UXN | \
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PMD_ATTRINDX_MASK | \
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PTE_TYPE_VALID)
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/*
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* TCR flags.
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*/
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#define TCR_T0SZ(x) ((64 - (x)) << 0)
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#define TCR_IRGN_NC (0 << 8)
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#define TCR_IRGN_WBWA (1 << 8)
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#define TCR_IRGN_WT (2 << 8)
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#define TCR_IRGN_WBNWA (3 << 8)
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#define TCR_IRGN_MASK (3 << 8)
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#define TCR_ORGN_NC (0 << 10)
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#define TCR_ORGN_WBWA (1 << 10)
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#define TCR_ORGN_WT (2 << 10)
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#define TCR_ORGN_WBNWA (3 << 10)
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#define TCR_ORGN_MASK (3 << 10)
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#define TCR_SHARED_NON (0 << 12)
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#define TCR_SHARED_OUTER (2 << 12)
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#define TCR_SHARED_INNER (3 << 12)
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#define TCR_TG0_4K (0 << 14)
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#define TCR_TG0_64K (1 << 14)
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#define TCR_TG0_16K (2 << 14)
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#define TCR_EPD1_DISABLE (1 << 23)
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#define TCR_EL1_RSVD (1 << 31)
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#define TCR_EL2_RSVD (1 << 31 | 1 << 23)
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#define TCR_EL3_RSVD (1 << 31 | 1 << 23)
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#ifndef __ASSEMBLY__
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static inline void set_ttbr_tcr_mair(int el, u64 table, u64 tcr, u64 attr)
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{
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asm volatile("dsb sy");
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if (el == 1) {
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asm volatile("msr ttbr0_el1, %0" : : "r" (table) : "memory");
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asm volatile("msr tcr_el1, %0" : : "r" (tcr) : "memory");
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asm volatile("msr mair_el1, %0" : : "r" (attr) : "memory");
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} else if (el == 2) {
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asm volatile("msr ttbr0_el2, %0" : : "r" (table) : "memory");
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asm volatile("msr tcr_el2, %0" : : "r" (tcr) : "memory");
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asm volatile("msr mair_el2, %0" : : "r" (attr) : "memory");
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} else if (el == 3) {
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asm volatile("msr ttbr0_el3, %0" : : "r" (table) : "memory");
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asm volatile("msr tcr_el3, %0" : : "r" (tcr) : "memory");
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asm volatile("msr mair_el3, %0" : : "r" (attr) : "memory");
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} else {
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hang();
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}
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asm volatile("isb");
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}
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struct mm_region {
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u64 virt;
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u64 phys;
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u64 size;
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u64 attrs;
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};
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extern struct mm_region *mem_map;
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void setup_pgtables(void);
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u64 get_tcr(int el, u64 *pips, u64 *pva_bits);
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#endif
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#endif /* _ASM_ARMV8_MMU_H_ */
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