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git://git.code.sf.net/p/openocd/code
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382148e4dd
With the old checkpatch we cannot use the correct format for the SPDX tags in the file .c, in fact the C99 comments are not allowed and we had to use the block comment. With the new checkpatch, let's switch to the correct SPDX format. Change created automatically through the command: sed -i \ 's,^/\* *\(SPDX-License-Identifier: .*[^ ]\) *\*/$,// \1,' \ $(find src/ contrib/ -name \*.c) Change-Id: I6da16506baa7af718947562505dd49606d124171 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7153 Tested-by: jenkins
68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/***************************************************************************
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* Copyright (C) 2013 Andes Technology *
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* Hsiangkai Wang <hkwang@andestech.com> *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "nds32_aice.h"
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#include "nds32_tlb.h"
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int nds32_probe_tlb(struct nds32 *nds32, const target_addr_t virtual_address,
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target_addr_t *physical_address)
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{
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struct target *target = nds32->target;
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struct aice_port_s *aice = target_to_aice(target);
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return aice_read_tlb(aice, virtual_address, physical_address);
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}
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static struct page_table_walker_info_s page_table_info[PAGE_SIZE_NUM] = {
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/* 4K page */
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{0xFFC00000, 20, 0x003FF000, 10, 0x00000FFF, 0xFFFFF000, 0xFFFFF000, 0xFFFFF000},
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/* 8K page */
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{0xFF000000, 22, 0x00FFE000, 11, 0x00001FFF, 0xFFFFF000, 0xFFFFE000, 0xFFFFE000},
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};
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int nds32_walk_page_table(struct nds32 *nds32, const target_addr_t virtual_address,
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target_addr_t *physical_address)
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{
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struct target *target = nds32->target;
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uint32_t value_mr1;
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uint32_t load_address;
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uint32_t l1_page_table_entry;
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uint32_t l2_page_table_entry;
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uint32_t page_size_index = nds32->mmu_config.default_min_page_size;
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struct page_table_walker_info_s *page_table_info_p =
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&(page_table_info[page_size_index]);
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/* Read L1 Physical Page Table */
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nds32_get_mapped_reg(nds32, MR1, &value_mr1);
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load_address = (value_mr1 & page_table_info_p->l1_base_mask) |
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((virtual_address & page_table_info_p->l1_offset_mask) >>
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page_table_info_p->l1_offset_shift);
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/* load_address is physical address */
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nds32_read_buffer(target, load_address, 4, (uint8_t *)&l1_page_table_entry);
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/* Read L2 Physical Page Table */
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if (l1_page_table_entry & 0x1) /* L1_PTE not present */
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return ERROR_FAIL;
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load_address = (l1_page_table_entry & page_table_info_p->l2_base_mask) |
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((virtual_address & page_table_info_p->l2_offset_mask) >>
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page_table_info_p->l2_offset_shift);
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/* load_address is physical address */
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nds32_read_buffer(target, load_address, 4, (uint8_t *)&l2_page_table_entry);
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if ((l2_page_table_entry & 0x1) != 0x1) /* L2_PTE not valid */
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return ERROR_FAIL;
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*physical_address = (l2_page_table_entry & page_table_info_p->ppn_mask) |
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(virtual_address & page_table_info_p->va_offset_mask);
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return ERROR_OK;
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}
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