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Diffstat (limited to 'ANDROID_3.4.5/arch/powerpc/boot/devtree.c')
-rw-r--r--ANDROID_3.4.5/arch/powerpc/boot/devtree.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/ANDROID_3.4.5/arch/powerpc/boot/devtree.c b/ANDROID_3.4.5/arch/powerpc/boot/devtree.c
deleted file mode 100644
index a7e21a35..00000000
--- a/ANDROID_3.4.5/arch/powerpc/boot/devtree.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/*
- * devtree.c - convenience functions for device tree manipulation
- * Copyright 2007 David Gibson, IBM Corporation.
- * Copyright (c) 2007 Freescale Semiconductor, Inc.
- *
- * Authors: David Gibson <david@gibson.dropbear.id.au>
- * Scott Wood <scottwood@freescale.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
-#include <stdarg.h>
-#include <stddef.h>
-#include "types.h"
-#include "string.h"
-#include "stdio.h"
-#include "ops.h"
-
-void dt_fixup_memory(u64 start, u64 size)
-{
- void *root, *memory;
- int naddr, nsize, i;
- u32 memreg[4];
-
- root = finddevice("/");
- if (getprop(root, "#address-cells", &naddr, sizeof(naddr)) < 0)
- naddr = 2;
- if (naddr < 1 || naddr > 2)
- fatal("Can't cope with #address-cells == %d in /\n\r", naddr);
-
- if (getprop(root, "#size-cells", &nsize, sizeof(nsize)) < 0)
- nsize = 1;
- if (nsize < 1 || nsize > 2)
- fatal("Can't cope with #size-cells == %d in /\n\r", nsize);
-
- i = 0;
- if (naddr == 2)
- memreg[i++] = start >> 32;
- memreg[i++] = start & 0xffffffff;
- if (nsize == 2)
- memreg[i++] = size >> 32;
- memreg[i++] = size & 0xffffffff;
-
- memory = finddevice("/memory");
- if (! memory) {
- memory = create_node(NULL, "memory");
- setprop_str(memory, "device_type", "memory");
- }
-
- printf("Memory <- <0x%x", memreg[0]);
- for (i = 1; i < (naddr + nsize); i++)
- printf(" 0x%x", memreg[i]);
- printf("> (%ldMB)\n\r", (unsigned long)(size >> 20));
-
- setprop(memory, "reg", memreg, (naddr + nsize)*sizeof(u32));
-}
-
-#define MHZ(x) ((x + 500000) / 1000000)
-
-void dt_fixup_cpu_clocks(u32 cpu, u32 tb, u32 bus)
-{
- void *devp = NULL;
-
- printf("CPU clock-frequency <- 0x%x (%dMHz)\n\r", cpu, MHZ(cpu));
- printf("CPU timebase-frequency <- 0x%x (%dMHz)\n\r", tb, MHZ(tb));
- if (bus > 0)
- printf("CPU bus-frequency <- 0x%x (%dMHz)\n\r", bus, MHZ(bus));
-
- while ((devp = find_node_by_devtype(devp, "cpu"))) {
- setprop_val(devp, "clock-frequency", cpu);
- setprop_val(devp, "timebase-frequency", tb);
- if (bus > 0)
- setprop_val(devp, "bus-frequency", bus);
- }
-
- timebase_period_ns = 1000000000 / tb;
-}
-
-void dt_fixup_clock(const char *path, u32 freq)
-{
- void *devp = finddevice(path);
-
- if (devp) {
- printf("%s: clock-frequency <- %x (%dMHz)\n\r", path, freq, MHZ(freq));
- setprop_val(devp, "clock-frequency", freq);
- }
-}
-
-void dt_fixup_mac_address_by_alias(const char *alias, const u8 *addr)
-{
- void *devp = find_node_by_alias(alias);
-
- if (devp) {
- printf("%s: local-mac-address <-"
- " %02x:%02x:%02x:%02x:%02x:%02x\n\r", alias,
- addr[0], addr[1], addr[2],
- addr[3], addr[4], addr[5]);
-
- setprop(devp, "local-mac-address", addr, 6);
- }
-}
-
-void dt_fixup_mac_address(u32 index, const u8 *addr)
-{
- void *devp = find_node_by_prop_value(NULL, "linux,network-index",
- (void*)&index, sizeof(index));
-
- if (devp) {
- printf("ENET%d: local-mac-address <-"
- " %02x:%02x:%02x:%02x:%02x:%02x\n\r", index,
- addr[0], addr[1], addr[2],
- addr[3], addr[4], addr[5]);
-
- setprop(devp, "local-mac-address", addr, 6);
- }
-}
-
-void __dt_fixup_mac_addresses(u32 startindex, ...)
-{
- va_list ap;
- u32 index = startindex;
- const u8 *addr;
-
- va_start(ap, startindex);
-
- while ((addr = va_arg(ap, const u8 *)))
- dt_fixup_mac_address(index++, addr);
-
- va_end(ap);
-}
-
-#define MAX_ADDR_CELLS 4
-
-void dt_get_reg_format(void *node, u32 *naddr, u32 *nsize)
-{
- if (getprop(node, "#address-cells", naddr, 4) != 4)
- *naddr = 2;
- if (getprop(node, "#size-cells", nsize, 4) != 4)
- *nsize = 1;
-}
-
-static void copy_val(u32 *dest, u32 *src, int naddr)
-{
- int pad = MAX_ADDR_CELLS - naddr;
-
- memset(dest, 0, pad * 4);
- memcpy(dest + pad, src, naddr * 4);
-}
-
-static int sub_reg(u32 *reg, u32 *sub)
-{
- int i, borrow = 0;
-
- for (i = MAX_ADDR_CELLS - 1; i >= 0; i--) {
- int prev_borrow = borrow;
- borrow = reg[i] < sub[i] + prev_borrow;
- reg[i] -= sub[i] + prev_borrow;
- }
-
- return !borrow;
-}
-
-static int add_reg(u32 *reg, u32 *add, int naddr)
-{
- int i, carry = 0;
-
- for (i = MAX_ADDR_CELLS - 1; i >= MAX_ADDR_CELLS - naddr; i--) {
- u64 tmp = (u64)reg[i] + add[i] + carry;
- carry = tmp >> 32;
- reg[i] = (u32)tmp;
- }
-
- return !carry;
-}
-
-/* It is assumed that if the first byte of reg fits in a
- * range, then the whole reg block fits.
- */
-static int compare_reg(u32 *reg, u32 *range, u32 *rangesize)
-{
- int i;
- u32 end;
-
- for (i = 0; i < MAX_ADDR_CELLS; i++) {
- if (reg[i] < range[i])
- return 0;
- if (reg[i] > range[i])
- break;
- }
-
- for (i = 0; i < MAX_ADDR_CELLS; i++) {
- end = range[i] + rangesize[i];
-
- if (reg[i] < end)
- break;
- if (reg[i] > end)
- return 0;
- }
-
- return reg[i] != end;
-}
-
-/* reg must be MAX_ADDR_CELLS */
-static int find_range(u32 *reg, u32 *ranges, int nregaddr,
- int naddr, int nsize, int buflen)
-{
- int nrange = nregaddr + naddr + nsize;
- int i;
-
- for (i = 0; i + nrange <= buflen; i += nrange) {
- u32 range_addr[MAX_ADDR_CELLS];
- u32 range_size[MAX_ADDR_CELLS];
-
- copy_val(range_addr, ranges + i, nregaddr);
- copy_val(range_size, ranges + i + nregaddr + naddr, nsize);
-
- if (compare_reg(reg, range_addr, range_size))
- return i;
- }
-
- return -1;
-}
-
-/* Currently only generic buses without special encodings are supported.
- * In particular, PCI is not supported. Also, only the beginning of the
- * reg block is tracked; size is ignored except in ranges.
- */
-static u32 prop_buf[MAX_PROP_LEN / 4];
-
-static int dt_xlate(void *node, int res, int reglen, unsigned long *addr,
- unsigned long *size)
-{
- u32 last_addr[MAX_ADDR_CELLS];
- u32 this_addr[MAX_ADDR_CELLS];
- void *parent;
- u64 ret_addr, ret_size;
- u32 naddr, nsize, prev_naddr, prev_nsize;
- int buflen, offset;
-
- parent = get_parent(node);
- if (!parent)
- return 0;
-
- dt_get_reg_format(parent, &naddr, &nsize);
-
- if (nsize > 2)
- return 0;
-
- offset = (naddr + nsize) * res;
-
- if (reglen < offset + naddr + nsize ||
- MAX_PROP_LEN < (offset + naddr + nsize) * 4)
- return 0;
-
- copy_val(last_addr, prop_buf + offset, naddr);
-
- ret_size = prop_buf[offset + naddr];
- if (nsize == 2) {
- ret_size <<= 32;
- ret_size |= prop_buf[offset + naddr + 1];
- }
-
- for (;;) {
- prev_naddr = naddr;
- prev_nsize = nsize;
- node = parent;
-
- parent = get_parent(node);
- if (!parent)
- break;
-
- dt_get_reg_format(parent, &naddr, &nsize);
-
- buflen = getprop(node, "ranges", prop_buf,
- sizeof(prop_buf));
- if (buflen == 0)
- continue;
- if (buflen < 0 || buflen > sizeof(prop_buf))
- return 0;
-
- offset = find_range(last_addr, prop_buf, prev_naddr,
- naddr, prev_nsize, buflen / 4);
-
- if (offset < 0)
- return 0;
-
- copy_val(this_addr, prop_buf + offset, prev_naddr);
-
- if (!sub_reg(last_addr, this_addr))
- return 0;
-
- copy_val(this_addr, prop_buf + offset + prev_naddr, naddr);
-
- if (!add_reg(last_addr, this_addr, naddr))
- return 0;
- }
-
- if (naddr > 2)
- return 0;
-
- ret_addr = ((u64)last_addr[2] << 32) | last_addr[3];
-
- if (sizeof(void *) == 4 &&
- (ret_addr >= 0x100000000ULL || ret_size > 0x100000000ULL ||
- ret_addr + ret_size > 0x100000000ULL))
- return 0;
-
- *addr = ret_addr;
- if (size)
- *size = ret_size;
-
- return 1;
-}
-
-int dt_xlate_reg(void *node, int res, unsigned long *addr, unsigned long *size)
-{
- int reglen;
-
- reglen = getprop(node, "reg", prop_buf, sizeof(prop_buf)) / 4;
- return dt_xlate(node, res, reglen, addr, size);
-}
-
-int dt_xlate_addr(void *node, u32 *buf, int buflen, unsigned long *xlated_addr)
-{
-
- if (buflen > sizeof(prop_buf))
- return 0;
-
- memcpy(prop_buf, buf, buflen);
- return dt_xlate(node, 0, buflen / 4, xlated_addr, NULL);
-}
-
-int dt_is_compatible(void *node, const char *compat)
-{
- char *buf = (char *)prop_buf;
- int len, pos;
-
- len = getprop(node, "compatible", buf, MAX_PROP_LEN);
- if (len < 0)
- return 0;
-
- for (pos = 0; pos < len; pos++) {
- if (!strcmp(buf + pos, compat))
- return 1;
-
- pos += strnlen(&buf[pos], len - pos);
- }
-
- return 0;
-}
-
-int dt_get_virtual_reg(void *node, void **addr, int nres)
-{
- unsigned long xaddr;
- int n;
-
- n = getprop(node, "virtual-reg", addr, nres * 4);
- if (n > 0)
- return n / 4;
-
- for (n = 0; n < nres; n++) {
- if (!dt_xlate_reg(node, n, &xaddr, NULL))
- break;
-
- addr[n] = (void *)xaddr;
- }
-
- return n;
-}
-