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| author | Andrew Waterman <waterman@cs.berkeley.edu> | 2016-04-30 17:39:13 -0700 |
|---|---|---|
| committer | Andrew Waterman <waterman@cs.berkeley.edu> | 2016-04-30 17:44:09 -0700 |
| commit | 7389e46cd013e0cd23af8a6531e9e104b5a31d09 (patch) | |
| tree | 65a2567c46be9fa73f958cf1863f03925d335cda /bbl | |
| parent | 1a9aefdd006b660093283b039bfa8931319f8ae3 (diff) | |
| download | pk-7389e46cd013e0cd23af8a6531e9e104b5a31d09.zip pk-7389e46cd013e0cd23af8a6531e9e104b5a31d09.tar.gz pk-7389e46cd013e0cd23af8a6531e9e104b5a31d09.tar.bz2 | |
Move DRAM to high addresses
Diffstat (limited to 'bbl')
| -rw-r--r-- | bbl/bbl.c | 8 | ||||
| -rw-r--r-- | bbl/bbl.lds | 2 |
2 files changed, 5 insertions, 5 deletions
@@ -11,7 +11,7 @@ static volatile int elf_loaded; static void supervisor_vm_init() { - uintptr_t highest_va = -first_free_paddr; + uintptr_t highest_va = DRAM_BASE - first_free_paddr; mem_size = MIN(mem_size, highest_va - info.first_user_vaddr) & -MEGAPAGE_SIZE; pte_t* sbi_pt = (pte_t*)(info.first_vaddr_after_user + info.load_offset); @@ -30,7 +30,7 @@ static void supervisor_vm_init() #endif for (uintptr_t vaddr = info.first_user_vaddr, paddr = vaddr + info.load_offset, end = info.first_vaddr_after_user; - paddr < mem_size; vaddr += MEGAPAGE_SIZE, paddr += MEGAPAGE_SIZE) { + paddr < DRAM_BASE + mem_size; vaddr += MEGAPAGE_SIZE, paddr += MEGAPAGE_SIZE) { int l2_shift = RISCV_PGLEVEL_BITS + RISCV_PGSHIFT; size_t l2_idx = (info.first_user_vaddr >> l2_shift) & ((1 << RISCV_PGLEVEL_BITS)-1); l2_idx += ((vaddr - info.first_user_vaddr) >> l2_shift); @@ -39,11 +39,11 @@ static void supervisor_vm_init() // map SBI at top of vaddr space extern char _sbi_end; - uintptr_t num_sbi_pages = ((uintptr_t)&_sbi_end - 1) / RISCV_PGSIZE + 1; + uintptr_t num_sbi_pages = ((uintptr_t)&_sbi_end - DRAM_BASE - 1) / RISCV_PGSIZE + 1; assert(num_sbi_pages <= (1 << RISCV_PGLEVEL_BITS)); for (uintptr_t i = 0; i < num_sbi_pages; i++) { uintptr_t idx = (1 << RISCV_PGLEVEL_BITS) - num_sbi_pages + i; - sbi_pt[idx] = pte_create(i, PTE_TYPE_SRX_GLOBAL); + sbi_pt[idx] = pte_create((DRAM_BASE / RISCV_PGSIZE) + i, PTE_TYPE_SRX_GLOBAL); } pte_t* sbi_pte = middle_pt + ((num_middle_pts << RISCV_PGLEVEL_BITS)-1); assert(!*sbi_pte); diff --git a/bbl/bbl.lds b/bbl/bbl.lds index 5ccdf22..c06aa13 100644 --- a/bbl/bbl.lds +++ b/bbl/bbl.lds @@ -10,7 +10,7 @@ SECTIONS /*--------------------------------------------------------------------*/ /* Begining of code and text segment */ - . = 0; + . = 0x80000000; _ftext = .; PROVIDE( eprol = . ); |