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https://github.com/projectacrn/acrn-hypervisor.git
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b50f1eb199
Add functions get_board_hv_device_start/get_board_hv_device_size to get mmio device start address and size. These are needed to be generated by config tool or runtime parsing DTS, wrap the method here. Tracked-On: #8831 Signed-off-by: hangliu1 <hang1.liu@intel.com> Reviewed-by: Liu, Yifan1 <yifan1.liu@intel.com> Acked-by: Wang, Yu1 <yu1.wang@intel.com>
95 lines
2.4 KiB
C
95 lines
2.4 KiB
C
/*
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* Copyright (C) 2023-2025 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <types.h>
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#include <rtl.h>
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#include <mmu.h>
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#include <asm/qemu.h>
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void set_paging_supervisor(__unused uint64_t base, __unused uint64_t size)
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{
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}
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static struct page_pool ppt_page_pool;
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/**
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* Riscv mmio memory layout is continuous and it support 1G huge
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* page by default, base on this, we assume it only consume one VPN3/2 page,
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* and preserve 4 VPN1 page to deal with memory map without 1G alignment.
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* for VPN0 page, we only preserve uart mmio related 2 pages.
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*
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* FIXME: The number need to be calculated according to the actual platform
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* memory layout, which is to be generated by config tool.
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*/
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#define PPT_VPN3_PAGE_NUM 1UL
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#define PPT_VPN2_PAGE_NUM 1UL
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#define PPT_VPN1_PAGE_NUM 4UL
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#define PPT_VPN0_PAGE_NUM 2UL
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#define PPT_PAGE_NUM_SUM (PPT_VPN3_PAGE_NUM + PPT_VPN2_PAGE_NUM + PPT_VPN1_PAGE_NUM + PPT_VPN0_PAGE_NUM)
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#define PPT_PAGE_NUM roundup(PPT_PAGE_NUM_SUM, 64U)
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DEFINE_PAGE_TABLES(ppt_pages, PPT_PAGE_NUM);
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DEFINE_PAGE_TABLE(ppt_pages_bitmap);
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static bool large_page_support(enum _page_table_level level, uint64_t __unused prot)
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{
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if (level == PGT_LVL1|| level == PGT_LVL2)
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return true;
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else
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return false;
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}
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static void ppt_flush_cache_pagewalk(const void* entry __attribute__((unused)))
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{
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}
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static uint64_t ppt_pgentry_present(uint64_t pte)
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{
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return pte & PAGE_V;
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}
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static inline void ppt_set_pgentry(uint64_t *pte, uint64_t page, uint64_t prot, enum _page_table_level __unused level,
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bool is_leaf, const struct pgtable *table)
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{
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uint64_t prot_tmp;
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if (!is_leaf) {
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prot_tmp = PAGE_V;
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} else {
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prot_tmp = prot;
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}
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make_pgentry(pte, page, prot_tmp, table);
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}
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static const struct pgtable ppt_pgtable = {
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.pool = &ppt_page_pool,
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.large_page_support = large_page_support,
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.pgentry_present = ppt_pgentry_present,
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.flush_cache_pagewalk = ppt_flush_cache_pagewalk,
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.set_pgentry = ppt_set_pgentry,
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};
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/* TODO: need to formally get the value either from
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* config tool or from DTS runtime parsing.
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*/
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static uint64_t get_board_hv_device_start(void)
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{
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return 0UL;
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}
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/* TODO: need to formally get the value either from
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* config tool or from DTS runtime parsing.
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*/
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static uint64_t get_board_hv_device_size(void)
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{
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return 0x80000000UL;
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}
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void init_paging(void)
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{
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init_page_pool(&ppt_page_pool, (uint64_t *)ppt_pages,
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(uint64_t *)ppt_pages_bitmap, PPT_PAGE_NUM);
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}
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