+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2011 The Chromium OS Authors.
- * SPDX-License-Identifier: GPL-2.0+
*/
-#define DEBUG
+
#include <common.h>
-#include <dm/root.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <errno.h>
+#include <linux/libfdt.h>
#include <os.h>
#include <asm/io.h>
+#include <asm/setjmp.h>
#include <asm/state.h>
+#include <dm/root.h>
DECLARE_GLOBAL_DATA_PTR;
/* delay x useconds */
void __udelay(unsigned long usec)
{
- os_usleep(usec);
+ struct sandbox_state *state = state_get_current();
+
+ if (!state->skip_delays)
+ os_usleep(usec);
}
int cleanup_before_linux(void)
return 0;
}
+/**
+ * is_in_sandbox_mem() - Checks if a pointer is within sandbox's emulated DRAM
+ *
+ * This provides a way to check if a pointer is owned by sandbox (and is within
+ * its RAM) or not. Sometimes pointers come from a test which conceptually runs
+ * output sandbox, potentially with direct access to the C-library malloc()
+ * function, or the sandbox stack (which is not actually within the emulated
+ * DRAM.
+ *
+ * Such pointers obviously cannot be mapped into sandbox's DRAM, so we must
+ * detect them an process them separately, by recording a mapping to a tag,
+ * which we can use to map back to the pointer later.
+ *
+ * @ptr: Pointer to check
+ * @return true if this is within sandbox emulated DRAM, false if not
+ */
+static bool is_in_sandbox_mem(const void *ptr)
+{
+ return (const uint8_t *)ptr >= gd->arch.ram_buf &&
+ (const uint8_t *)ptr < gd->arch.ram_buf + gd->ram_size;
+}
+
+/**
+ * phys_to_virt() - Converts a sandbox RAM address to a pointer
+ *
+ * Sandbox uses U-Boot addresses from 0 to the size of DRAM. These index into
+ * the emulated DRAM buffer used by sandbox. This function converts such an
+ * address to a pointer into this buffer, which can be used to access the
+ * memory.
+ *
+ * If the address is outside this range, it is assumed to be a tag
+ */
+void *phys_to_virt(phys_addr_t paddr)
+{
+ struct sandbox_mapmem_entry *mentry;
+ struct sandbox_state *state;
+
+ /* If the address is within emulated DRAM, calculate the value */
+ if (paddr < gd->ram_size)
+ return (void *)(gd->arch.ram_buf + paddr);
+
+ /*
+ * Otherwise search out list of tags for the correct pointer previously
+ * created by map_to_sysmem()
+ */
+ state = state_get_current();
+ list_for_each_entry(mentry, &state->mapmem_head, sibling_node) {
+ if (mentry->tag == paddr) {
+ debug("%s: Used map from %lx to %p\n", __func__,
+ (ulong)paddr, mentry->ptr);
+ return mentry->ptr;
+ }
+ }
+
+ printf("%s: Cannot map sandbox address %lx (SDRAM from 0 to %lx)\n",
+ __func__, (ulong)paddr, (ulong)gd->ram_size);
+ os_abort();
+
+ /* Not reached */
+ return NULL;
+}
+
+struct sandbox_mapmem_entry *find_tag(const void *ptr)
+{
+ struct sandbox_mapmem_entry *mentry;
+ struct sandbox_state *state = state_get_current();
+
+ list_for_each_entry(mentry, &state->mapmem_head, sibling_node) {
+ if (mentry->ptr == ptr) {
+ debug("%s: Used map from %p to %lx\n", __func__, ptr,
+ mentry->tag);
+ return mentry;
+ }
+ }
+ return NULL;
+}
+
+phys_addr_t virt_to_phys(void *ptr)
+{
+ struct sandbox_mapmem_entry *mentry;
+
+ /*
+ * If it is in emulated RAM, don't bother looking for a tag. Just
+ * calculate the pointer using the provides offset into the RAM buffer.
+ */
+ if (is_in_sandbox_mem(ptr))
+ return (phys_addr_t)((uint8_t *)ptr - gd->arch.ram_buf);
+
+ mentry = find_tag(ptr);
+ if (!mentry) {
+ /* Abort so that gdb can be used here */
+ printf("%s: Cannot map sandbox address %p (SDRAM from 0 to %lx)\n",
+ __func__, ptr, (ulong)gd->ram_size);
+ os_abort();
+ }
+ debug("%s: Used map from %p to %lx\n", __func__, ptr, mentry->tag);
+
+ return mentry->tag;
+}
+
void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) && !defined(CONFIG_SPL_BUILD)
unsigned long plen = len;
void *ptr;
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);
+ __func__, (uint)paddr, len, plen);
}
map_len = len;
return ptr;
}
#endif
- return (void *)(gd->arch.ram_buf + paddr);
+ return phys_to_virt(paddr);
}
-void unmap_physmem(const void *vaddr, unsigned long flags)
+void unmap_physmem(const void *ptr, unsigned long flags)
{
#ifdef CONFIG_PCI
if (map_dev) {
- pci_unmap_physmem(vaddr, map_len, map_dev);
+ pci_unmap_physmem(ptr, map_len, map_dev);
map_dev = NULL;
}
#endif
}
+phys_addr_t map_to_sysmem(const void *ptr)
+{
+ struct sandbox_mapmem_entry *mentry;
+
+ /*
+ * If it is in emulated RAM, don't bother creating a tag. Just return
+ * the offset into the RAM buffer.
+ */
+ if (is_in_sandbox_mem(ptr))
+ return (u8 *)ptr - gd->arch.ram_buf;
+
+ /*
+ * See if there is an existing tag with this pointer. If not, set up a
+ * new one.
+ */
+ mentry = find_tag(ptr);
+ if (!mentry) {
+ struct sandbox_state *state = state_get_current();
+
+ mentry = malloc(sizeof(*mentry));
+ if (!mentry) {
+ printf("%s: Error: Out of memory\n", __func__);
+ os_exit(ENOMEM);
+ }
+ mentry->tag = state->next_tag++;
+ mentry->ptr = (void *)ptr;
+ list_add_tail(&mentry->sibling_node, &state->mapmem_head);
+ debug("%s: Added map from %p to %lx\n", __func__, ptr,
+ (ulong)mentry->tag);
+ }
+
+ /*
+ * Return the tag as the address to use. A later call to map_sysmem()
+ * will return ptr
+ */
+ return mentry->tag;
+}
+
+unsigned int sandbox_read(const void *addr, enum sandboxio_size_t size)
+{
+ struct sandbox_state *state = state_get_current();
+
+ if (!state->allow_memio)
+ return 0;
+
+ switch (size) {
+ case SB_SIZE_8:
+ return *(u8 *)addr;
+ case SB_SIZE_16:
+ return *(u16 *)addr;
+ case SB_SIZE_32:
+ return *(u32 *)addr;
+ case SB_SIZE_64:
+ return *(u64 *)addr;
+ }
+
+ return 0;
+}
+
+void sandbox_write(void *addr, unsigned int val, enum sandboxio_size_t size)
+{
+ struct sandbox_state *state = state_get_current();
+
+ if (!state->allow_memio)
+ return;
+
+ switch (size) {
+ case SB_SIZE_8:
+ *(u8 *)addr = val;
+ break;
+ case SB_SIZE_16:
+ *(u16 *)addr = val;
+ break;
+ case SB_SIZE_32:
+ *(u32 *)addr = val;
+ break;
+ case SB_SIZE_64:
+ *(u64 *)addr = val;
+ break;
+ }
+}
+
+void sandbox_set_enable_memio(bool enable)
+{
+ struct sandbox_state *state = state_get_current();
+
+ state->allow_memio = enable;
+}
+
void sandbox_set_enable_pci_map(int enable)
{
enable_pci_map = enable;
}
-phys_addr_t map_to_sysmem(const void *ptr)
+void flush_dcache_range(unsigned long start, unsigned long stop)
{
- return (u8 *)ptr - gd->arch.ram_buf;
}
-void flush_dcache_range(unsigned long start, unsigned long stop)
+void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
}
return 0;
}
+
+ulong timer_get_boot_us(void)
+{
+ static uint64_t base_count;
+ uint64_t count = os_get_nsec();
+
+ if (!base_count)
+ base_count = count;
+
+ return (count - base_count) / 1000;
+}
projects / platform / kernel / u-boot.git / blobdiff