diff options
Diffstat (limited to 'arch/sandbox/cpu')
| -rw-r--r-- | arch/sandbox/cpu/cpu.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/arch/sandbox/cpu/cpu.c b/arch/sandbox/cpu/cpu.c index 1aa397c..007ae86 100644 --- a/arch/sandbox/cpu/cpu.c +++ b/arch/sandbox/cpu/cpu.c @@ -2,7 +2,7 @@ * Copyright (c) 2011 The Chromium OS Authors. * SPDX-License-Identifier: GPL-2.0+ */ - +#define DEBUG #include <common.h> #include <dm/root.h> #include <os.h> @@ -10,6 +10,15 @@ DECLARE_GLOBAL_DATA_PTR; +/* Enable access to PCI memory with map_sysmem() */ +static bool enable_pci_map; + +#ifdef CONFIG_PCI +/* Last device that was mapped into memory, and length of mapping */ +static struct udevice *map_dev; +unsigned long map_len; +#endif + void reset_cpu(ulong ignored) { if (state_uninit()) @@ -59,9 +68,39 @@ int cleanup_before_linux(void) void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags) { +#ifdef CONFIG_PCI + unsigned long plen = len; + void *ptr; + + map_dev = NULL; + if (enable_pci_map && !pci_map_physmem(paddr, &len, &map_dev, &ptr)) { + if (plen != len) { + printf("%s: Warning: partial map at %x, wanted %lx, got %lx\n", + __func__, paddr, len, plen); + } + map_len = len; + return ptr; + } +#endif + return (void *)(gd->arch.ram_buf + paddr); } +void unmap_physmem(const void *vaddr, unsigned long flags) +{ +#ifdef CONFIG_PCI + if (map_dev) { + pci_unmap_physmem(vaddr, map_len, map_dev); + map_dev = NULL; + } +#endif +} + +void sandbox_set_enable_pci_map(int enable) +{ + enable_pci_map = enable; +} + phys_addr_t map_to_sysmem(const void *ptr) { return (u8 *)ptr - gd->arch.ram_buf; |