mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-22 18:09:03 +09:00
![Simon Glass](/assets/img/avatar_default.png)
Adjust the Tegra PCI driver to support driver model and move all boards over at the same time. This can make use of some generic driver model code, such as the range-decoding logic. Signed-off-by: Simon Glass <sjg@chromium.org> Tested-by: Stephen Warren <swarren@nvidia.com>
1246 lines
32 KiB
C
1246 lines
32 KiB
C
/*
|
|
* Copyright (c) 2011 The Chromium OS Authors.
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#ifndef USE_HOSTCC
|
|
#include <common.h>
|
|
#include <errno.h>
|
|
#include <serial.h>
|
|
#include <libfdt.h>
|
|
#include <fdtdec.h>
|
|
#include <asm/sections.h>
|
|
#include <linux/ctype.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
/*
|
|
* Here are the type we know about. One day we might allow drivers to
|
|
* register. For now we just put them here. The COMPAT macro allows us to
|
|
* turn this into a sparse list later, and keeps the ID with the name.
|
|
*/
|
|
#define COMPAT(id, name) name
|
|
static const char * const compat_names[COMPAT_COUNT] = {
|
|
COMPAT(UNKNOWN, "<none>"),
|
|
COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
|
|
COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
|
|
COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
|
|
COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
|
|
COMPAT(NVIDIA_TEGRA124_DC, "nvidia,tegra124-dc"),
|
|
COMPAT(NVIDIA_TEGRA124_SOR, "nvidia,tegra124-sor"),
|
|
COMPAT(NVIDIA_TEGRA124_PMC, "nvidia,tegra124-pmc"),
|
|
COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
|
|
COMPAT(NVIDIA_TEGRA210_SDMMC, "nvidia,tegra210-sdhci"),
|
|
COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
|
|
COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
|
|
COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
|
|
COMPAT(NVIDIA_TEGRA124_XUSB_PADCTL, "nvidia,tegra124-xusb-padctl"),
|
|
COMPAT(NVIDIA_TEGRA210_XUSB_PADCTL, "nvidia,tegra210-xusb-padctl"),
|
|
COMPAT(SMSC_LAN9215, "smsc,lan9215"),
|
|
COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"),
|
|
COMPAT(SAMSUNG_S3C2440_I2C, "samsung,s3c2440-i2c"),
|
|
COMPAT(SAMSUNG_EXYNOS5_SOUND, "samsung,exynos-sound"),
|
|
COMPAT(WOLFSON_WM8994_CODEC, "wolfson,wm8994-codec"),
|
|
COMPAT(GOOGLE_CROS_EC_KEYB, "google,cros-ec-keyb"),
|
|
COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"),
|
|
COMPAT(SAMSUNG_EXYNOS5_USB3_PHY, "samsung,exynos5250-usb3-phy"),
|
|
COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"),
|
|
COMPAT(SAMSUNG_EXYNOS_FIMD, "samsung,exynos-fimd"),
|
|
COMPAT(SAMSUNG_EXYNOS_MIPI_DSI, "samsung,exynos-mipi-dsi"),
|
|
COMPAT(SAMSUNG_EXYNOS5_DP, "samsung,exynos5-dp"),
|
|
COMPAT(SAMSUNG_EXYNOS_DWMMC, "samsung,exynos-dwmmc"),
|
|
COMPAT(SAMSUNG_EXYNOS_MMC, "samsung,exynos-mmc"),
|
|
COMPAT(SAMSUNG_EXYNOS_SERIAL, "samsung,exynos4210-uart"),
|
|
COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686"),
|
|
COMPAT(GENERIC_SPI_FLASH, "spi-flash"),
|
|
COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"),
|
|
COMPAT(SAMSUNG_EXYNOS5_I2C, "samsung,exynos5-hsi2c"),
|
|
COMPAT(SANDBOX_LCD_SDL, "sandbox,lcd-sdl"),
|
|
COMPAT(SAMSUNG_EXYNOS_SYSMMU, "samsung,sysmmu-v3.3"),
|
|
COMPAT(INTEL_MICROCODE, "intel,microcode"),
|
|
COMPAT(MEMORY_SPD, "memory-spd"),
|
|
COMPAT(INTEL_PANTHERPOINT_AHCI, "intel,pantherpoint-ahci"),
|
|
COMPAT(INTEL_MODEL_206AX, "intel,model-206ax"),
|
|
COMPAT(INTEL_GMA, "intel,gma"),
|
|
COMPAT(AMS_AS3722, "ams,as3722"),
|
|
COMPAT(INTEL_ICH_SPI, "intel,ich-spi"),
|
|
COMPAT(INTEL_QRK_MRC, "intel,quark-mrc"),
|
|
COMPAT(INTEL_X86_PINCTRL, "intel,x86-pinctrl"),
|
|
COMPAT(SOCIONEXT_XHCI, "socionext,uniphier-xhci"),
|
|
COMPAT(COMPAT_INTEL_PCH, "intel,bd82x6x"),
|
|
COMPAT(COMPAT_INTEL_IRQ_ROUTER, "intel,irq-router"),
|
|
COMPAT(ALTERA_SOCFPGA_DWMAC, "altr,socfpga-stmmac"),
|
|
COMPAT(ALTERA_SOCFPGA_DWMMC, "altr,socfpga-dw-mshc"),
|
|
COMPAT(COMPAT_INTEL_BAYTRAIL_FSP, "intel,baytrail-fsp"),
|
|
COMPAT(COMPAT_INTEL_BAYTRAIL_FSP_MDP, "intel,baytrail-fsp-mdp"),
|
|
};
|
|
|
|
const char *fdtdec_get_compatible(enum fdt_compat_id id)
|
|
{
|
|
/* We allow reading of the 'unknown' ID for testing purposes */
|
|
assert(id >= 0 && id < COMPAT_COUNT);
|
|
return compat_names[id];
|
|
}
|
|
|
|
fdt_addr_t fdtdec_get_addr_size_fixed(const void *blob, int node,
|
|
const char *prop_name, int index, int na, int ns,
|
|
fdt_size_t *sizep)
|
|
{
|
|
const fdt32_t *prop, *prop_end;
|
|
const fdt32_t *prop_addr, *prop_size, *prop_after_size;
|
|
int len;
|
|
fdt_addr_t addr;
|
|
|
|
debug("%s: %s: ", __func__, prop_name);
|
|
|
|
if (na > (sizeof(fdt_addr_t) / sizeof(fdt32_t))) {
|
|
debug("(na too large for fdt_addr_t type)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
if (ns > (sizeof(fdt_size_t) / sizeof(fdt32_t))) {
|
|
debug("(ns too large for fdt_size_t type)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
prop = fdt_getprop(blob, node, prop_name, &len);
|
|
if (!prop) {
|
|
debug("(not found)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
prop_end = prop + (len / sizeof(*prop));
|
|
|
|
prop_addr = prop + (index * (na + ns));
|
|
prop_size = prop_addr + na;
|
|
prop_after_size = prop_size + ns;
|
|
if (prop_after_size > prop_end) {
|
|
debug("(not enough data: expected >= %d cells, got %d cells)\n",
|
|
(u32)(prop_after_size - prop), ((u32)(prop_end - prop)));
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
addr = fdtdec_get_number(prop_addr, na);
|
|
|
|
if (sizep) {
|
|
*sizep = fdtdec_get_number(prop_size, ns);
|
|
debug("addr=%08llx, size=%llx\n", (u64)addr, (u64)*sizep);
|
|
} else {
|
|
debug("addr=%08llx\n", (u64)addr);
|
|
}
|
|
|
|
return addr;
|
|
}
|
|
|
|
fdt_addr_t fdtdec_get_addr_size_auto_parent(const void *blob, int parent,
|
|
int node, const char *prop_name, int index, fdt_size_t *sizep)
|
|
{
|
|
int na, ns;
|
|
|
|
debug("%s: ", __func__);
|
|
|
|
na = fdt_address_cells(blob, parent);
|
|
if (na < 1) {
|
|
debug("(bad #address-cells)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
ns = fdt_size_cells(blob, parent);
|
|
if (ns < 0) {
|
|
debug("(bad #size-cells)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
debug("na=%d, ns=%d, ", na, ns);
|
|
|
|
return fdtdec_get_addr_size_fixed(blob, node, prop_name, index, na,
|
|
ns, sizep);
|
|
}
|
|
|
|
fdt_addr_t fdtdec_get_addr_size_auto_noparent(const void *blob, int node,
|
|
const char *prop_name, int index, fdt_size_t *sizep)
|
|
{
|
|
int parent;
|
|
|
|
debug("%s: ", __func__);
|
|
|
|
parent = fdt_parent_offset(blob, node);
|
|
if (parent < 0) {
|
|
debug("(no parent found)\n");
|
|
return FDT_ADDR_T_NONE;
|
|
}
|
|
|
|
return fdtdec_get_addr_size_auto_parent(blob, parent, node, prop_name,
|
|
index, sizep);
|
|
}
|
|
|
|
fdt_addr_t fdtdec_get_addr_size(const void *blob, int node,
|
|
const char *prop_name, fdt_size_t *sizep)
|
|
{
|
|
int ns = sizep ? (sizeof(fdt_size_t) / sizeof(fdt32_t)) : 0;
|
|
|
|
return fdtdec_get_addr_size_fixed(blob, node, prop_name, 0,
|
|
sizeof(fdt_addr_t) / sizeof(fdt32_t),
|
|
ns, sizep);
|
|
}
|
|
|
|
fdt_addr_t fdtdec_get_addr(const void *blob, int node,
|
|
const char *prop_name)
|
|
{
|
|
return fdtdec_get_addr_size(blob, node, prop_name, NULL);
|
|
}
|
|
|
|
#ifdef CONFIG_PCI
|
|
int fdtdec_get_pci_addr(const void *blob, int node, enum fdt_pci_space type,
|
|
const char *prop_name, struct fdt_pci_addr *addr)
|
|
{
|
|
const u32 *cell;
|
|
int len;
|
|
int ret = -ENOENT;
|
|
|
|
debug("%s: %s: ", __func__, prop_name);
|
|
|
|
/*
|
|
* If we follow the pci bus bindings strictly, we should check
|
|
* the value of the node's parent node's #address-cells and
|
|
* #size-cells. They need to be 3 and 2 accordingly. However,
|
|
* for simplicity we skip the check here.
|
|
*/
|
|
cell = fdt_getprop(blob, node, prop_name, &len);
|
|
if (!cell)
|
|
goto fail;
|
|
|
|
if ((len % FDT_PCI_REG_SIZE) == 0) {
|
|
int num = len / FDT_PCI_REG_SIZE;
|
|
int i;
|
|
|
|
for (i = 0; i < num; i++) {
|
|
debug("pci address #%d: %08lx %08lx %08lx\n", i,
|
|
(ulong)fdt32_to_cpu(cell[0]),
|
|
(ulong)fdt32_to_cpu(cell[1]),
|
|
(ulong)fdt32_to_cpu(cell[2]));
|
|
if ((fdt32_to_cpu(*cell) & type) == type) {
|
|
addr->phys_hi = fdt32_to_cpu(cell[0]);
|
|
addr->phys_mid = fdt32_to_cpu(cell[1]);
|
|
addr->phys_lo = fdt32_to_cpu(cell[1]);
|
|
break;
|
|
} else {
|
|
cell += (FDT_PCI_ADDR_CELLS +
|
|
FDT_PCI_SIZE_CELLS);
|
|
}
|
|
}
|
|
|
|
if (i == num) {
|
|
ret = -ENXIO;
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
} else {
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
fail:
|
|
debug("(not found)\n");
|
|
return ret;
|
|
}
|
|
|
|
int fdtdec_get_pci_vendev(const void *blob, int node, u16 *vendor, u16 *device)
|
|
{
|
|
const char *list, *end;
|
|
int len;
|
|
|
|
list = fdt_getprop(blob, node, "compatible", &len);
|
|
if (!list)
|
|
return -ENOENT;
|
|
|
|
end = list + len;
|
|
while (list < end) {
|
|
char *s;
|
|
|
|
len = strlen(list);
|
|
if (len >= strlen("pciVVVV,DDDD")) {
|
|
s = strstr(list, "pci");
|
|
|
|
/*
|
|
* check if the string is something like pciVVVV,DDDD.RR
|
|
* or just pciVVVV,DDDD
|
|
*/
|
|
if (s && s[7] == ',' &&
|
|
(s[12] == '.' || s[12] == 0)) {
|
|
s += 3;
|
|
*vendor = simple_strtol(s, NULL, 16);
|
|
|
|
s += 5;
|
|
*device = simple_strtol(s, NULL, 16);
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
list += (len + 1);
|
|
}
|
|
|
|
return -ENOENT;
|
|
}
|
|
|
|
int fdtdec_get_pci_bdf(const void *blob, int node,
|
|
struct fdt_pci_addr *addr, pci_dev_t *bdf)
|
|
{
|
|
u16 dt_vendor, dt_device, vendor, device;
|
|
int ret;
|
|
|
|
/* get vendor id & device id from the compatible string */
|
|
ret = fdtdec_get_pci_vendev(blob, node, &dt_vendor, &dt_device);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* extract the bdf from fdt_pci_addr */
|
|
*bdf = addr->phys_hi & 0xffff00;
|
|
|
|
/* read vendor id & device id based on bdf */
|
|
pci_read_config_word(*bdf, PCI_VENDOR_ID, &vendor);
|
|
pci_read_config_word(*bdf, PCI_DEVICE_ID, &device);
|
|
|
|
/*
|
|
* Note there are two places in the device tree to fully describe
|
|
* a pci device: one is via compatible string with a format of
|
|
* "pciVVVV,DDDD" and the other one is the bdf numbers encoded in
|
|
* the device node's reg address property. We read the vendor id
|
|
* and device id based on bdf and compare the values with the
|
|
* "VVVV,DDDD". If they are the same, then we are good to use bdf
|
|
* to read device's bar. But if they are different, we have to rely
|
|
* on the vendor id and device id extracted from the compatible
|
|
* string and locate the real bdf by pci_find_device(). This is
|
|
* because normally we may only know device's device number and
|
|
* function number when writing device tree. The bus number is
|
|
* dynamically assigned during the pci enumeration process.
|
|
*/
|
|
if ((dt_vendor != vendor) || (dt_device != device)) {
|
|
*bdf = pci_find_device(dt_vendor, dt_device, 0);
|
|
if (*bdf == -1)
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fdtdec_get_pci_bar32(const void *blob, int node,
|
|
struct fdt_pci_addr *addr, u32 *bar)
|
|
{
|
|
pci_dev_t bdf;
|
|
int barnum;
|
|
int ret;
|
|
|
|
/* get pci devices's bdf */
|
|
ret = fdtdec_get_pci_bdf(blob, node, addr, &bdf);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* extract the bar number from fdt_pci_addr */
|
|
barnum = addr->phys_hi & 0xff;
|
|
if ((barnum < PCI_BASE_ADDRESS_0) || (barnum > PCI_CARDBUS_CIS))
|
|
return -EINVAL;
|
|
|
|
barnum = (barnum - PCI_BASE_ADDRESS_0) / 4;
|
|
*bar = pci_read_bar32(pci_bus_to_hose(PCI_BUS(bdf)), bdf, barnum);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
uint64_t fdtdec_get_uint64(const void *blob, int node, const char *prop_name,
|
|
uint64_t default_val)
|
|
{
|
|
const uint64_t *cell64;
|
|
int length;
|
|
|
|
cell64 = fdt_getprop(blob, node, prop_name, &length);
|
|
if (!cell64 || length < sizeof(*cell64))
|
|
return default_val;
|
|
|
|
return fdt64_to_cpu(*cell64);
|
|
}
|
|
|
|
int fdtdec_get_is_enabled(const void *blob, int node)
|
|
{
|
|
const char *cell;
|
|
|
|
/*
|
|
* It should say "okay", so only allow that. Some fdts use "ok" but
|
|
* this is a bug. Please fix your device tree source file. See here
|
|
* for discussion:
|
|
*
|
|
* http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
|
|
*/
|
|
cell = fdt_getprop(blob, node, "status", NULL);
|
|
if (cell)
|
|
return 0 == strcmp(cell, "okay");
|
|
return 1;
|
|
}
|
|
|
|
enum fdt_compat_id fdtdec_lookup(const void *blob, int node)
|
|
{
|
|
enum fdt_compat_id id;
|
|
|
|
/* Search our drivers */
|
|
for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
|
|
if (0 == fdt_node_check_compatible(blob, node,
|
|
compat_names[id]))
|
|
return id;
|
|
return COMPAT_UNKNOWN;
|
|
}
|
|
|
|
int fdtdec_next_compatible(const void *blob, int node,
|
|
enum fdt_compat_id id)
|
|
{
|
|
return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
|
|
}
|
|
|
|
int fdtdec_next_compatible_subnode(const void *blob, int node,
|
|
enum fdt_compat_id id, int *depthp)
|
|
{
|
|
do {
|
|
node = fdt_next_node(blob, node, depthp);
|
|
} while (*depthp > 1);
|
|
|
|
/* If this is a direct subnode, and compatible, return it */
|
|
if (*depthp == 1 && 0 == fdt_node_check_compatible(
|
|
blob, node, compat_names[id]))
|
|
return node;
|
|
|
|
return -FDT_ERR_NOTFOUND;
|
|
}
|
|
|
|
int fdtdec_next_alias(const void *blob, const char *name,
|
|
enum fdt_compat_id id, int *upto)
|
|
{
|
|
#define MAX_STR_LEN 20
|
|
char str[MAX_STR_LEN + 20];
|
|
int node, err;
|
|
|
|
/* snprintf() is not available */
|
|
assert(strlen(name) < MAX_STR_LEN);
|
|
sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
|
|
node = fdt_path_offset(blob, str);
|
|
if (node < 0)
|
|
return node;
|
|
err = fdt_node_check_compatible(blob, node, compat_names[id]);
|
|
if (err < 0)
|
|
return err;
|
|
if (err)
|
|
return -FDT_ERR_NOTFOUND;
|
|
(*upto)++;
|
|
return node;
|
|
}
|
|
|
|
int fdtdec_find_aliases_for_id(const void *blob, const char *name,
|
|
enum fdt_compat_id id, int *node_list, int maxcount)
|
|
{
|
|
memset(node_list, '\0', sizeof(*node_list) * maxcount);
|
|
|
|
return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
|
|
}
|
|
|
|
/* TODO: Can we tighten this code up a little? */
|
|
int fdtdec_add_aliases_for_id(const void *blob, const char *name,
|
|
enum fdt_compat_id id, int *node_list, int maxcount)
|
|
{
|
|
int name_len = strlen(name);
|
|
int nodes[maxcount];
|
|
int num_found = 0;
|
|
int offset, node;
|
|
int alias_node;
|
|
int count;
|
|
int i, j;
|
|
|
|
/* find the alias node if present */
|
|
alias_node = fdt_path_offset(blob, "/aliases");
|
|
|
|
/*
|
|
* start with nothing, and we can assume that the root node can't
|
|
* match
|
|
*/
|
|
memset(nodes, '\0', sizeof(nodes));
|
|
|
|
/* First find all the compatible nodes */
|
|
for (node = count = 0; node >= 0 && count < maxcount;) {
|
|
node = fdtdec_next_compatible(blob, node, id);
|
|
if (node >= 0)
|
|
nodes[count++] = node;
|
|
}
|
|
if (node >= 0)
|
|
debug("%s: warning: maxcount exceeded with alias '%s'\n",
|
|
__func__, name);
|
|
|
|
/* Now find all the aliases */
|
|
for (offset = fdt_first_property_offset(blob, alias_node);
|
|
offset > 0;
|
|
offset = fdt_next_property_offset(blob, offset)) {
|
|
const struct fdt_property *prop;
|
|
const char *path;
|
|
int number;
|
|
int found;
|
|
|
|
node = 0;
|
|
prop = fdt_get_property_by_offset(blob, offset, NULL);
|
|
path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
|
|
if (prop->len && 0 == strncmp(path, name, name_len))
|
|
node = fdt_path_offset(blob, prop->data);
|
|
if (node <= 0)
|
|
continue;
|
|
|
|
/* Get the alias number */
|
|
number = simple_strtoul(path + name_len, NULL, 10);
|
|
if (number < 0 || number >= maxcount) {
|
|
debug("%s: warning: alias '%s' is out of range\n",
|
|
__func__, path);
|
|
continue;
|
|
}
|
|
|
|
/* Make sure the node we found is actually in our list! */
|
|
found = -1;
|
|
for (j = 0; j < count; j++)
|
|
if (nodes[j] == node) {
|
|
found = j;
|
|
break;
|
|
}
|
|
|
|
if (found == -1) {
|
|
debug("%s: warning: alias '%s' points to a node "
|
|
"'%s' that is missing or is not compatible "
|
|
" with '%s'\n", __func__, path,
|
|
fdt_get_name(blob, node, NULL),
|
|
compat_names[id]);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* Add this node to our list in the right place, and mark
|
|
* it as done.
|
|
*/
|
|
if (fdtdec_get_is_enabled(blob, node)) {
|
|
if (node_list[number]) {
|
|
debug("%s: warning: alias '%s' requires that "
|
|
"a node be placed in the list in a "
|
|
"position which is already filled by "
|
|
"node '%s'\n", __func__, path,
|
|
fdt_get_name(blob, node, NULL));
|
|
continue;
|
|
}
|
|
node_list[number] = node;
|
|
if (number >= num_found)
|
|
num_found = number + 1;
|
|
}
|
|
nodes[found] = 0;
|
|
}
|
|
|
|
/* Add any nodes not mentioned by an alias */
|
|
for (i = j = 0; i < maxcount; i++) {
|
|
if (!node_list[i]) {
|
|
for (; j < maxcount; j++)
|
|
if (nodes[j] &&
|
|
fdtdec_get_is_enabled(blob, nodes[j]))
|
|
break;
|
|
|
|
/* Have we run out of nodes to add? */
|
|
if (j == maxcount)
|
|
break;
|
|
|
|
assert(!node_list[i]);
|
|
node_list[i] = nodes[j++];
|
|
if (i >= num_found)
|
|
num_found = i + 1;
|
|
}
|
|
}
|
|
|
|
return num_found;
|
|
}
|
|
|
|
int fdtdec_get_alias_seq(const void *blob, const char *base, int offset,
|
|
int *seqp)
|
|
{
|
|
int base_len = strlen(base);
|
|
const char *find_name;
|
|
int find_namelen;
|
|
int prop_offset;
|
|
int aliases;
|
|
|
|
find_name = fdt_get_name(blob, offset, &find_namelen);
|
|
debug("Looking for '%s' at %d, name %s\n", base, offset, find_name);
|
|
|
|
aliases = fdt_path_offset(blob, "/aliases");
|
|
for (prop_offset = fdt_first_property_offset(blob, aliases);
|
|
prop_offset > 0;
|
|
prop_offset = fdt_next_property_offset(blob, prop_offset)) {
|
|
const char *prop;
|
|
const char *name;
|
|
const char *slash;
|
|
int len, val;
|
|
|
|
prop = fdt_getprop_by_offset(blob, prop_offset, &name, &len);
|
|
debug(" - %s, %s\n", name, prop);
|
|
if (len < find_namelen || *prop != '/' || prop[len - 1] ||
|
|
strncmp(name, base, base_len))
|
|
continue;
|
|
|
|
slash = strrchr(prop, '/');
|
|
if (strcmp(slash + 1, find_name))
|
|
continue;
|
|
val = trailing_strtol(name);
|
|
if (val != -1) {
|
|
*seqp = val;
|
|
debug("Found seq %d\n", *seqp);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
debug("Not found\n");
|
|
return -ENOENT;
|
|
}
|
|
|
|
const char *fdtdec_get_chosen_prop(const void *blob, const char *name)
|
|
{
|
|
int chosen_node;
|
|
|
|
if (!blob)
|
|
return NULL;
|
|
chosen_node = fdt_path_offset(blob, "/chosen");
|
|
return fdt_getprop(blob, chosen_node, name, NULL);
|
|
}
|
|
|
|
int fdtdec_get_chosen_node(const void *blob, const char *name)
|
|
{
|
|
const char *prop;
|
|
|
|
prop = fdtdec_get_chosen_prop(blob, name);
|
|
if (!prop)
|
|
return -FDT_ERR_NOTFOUND;
|
|
return fdt_path_offset(blob, prop);
|
|
}
|
|
|
|
int fdtdec_check_fdt(void)
|
|
{
|
|
/*
|
|
* We must have an FDT, but we cannot panic() yet since the console
|
|
* is not ready. So for now, just assert(). Boards which need an early
|
|
* FDT (prior to console ready) will need to make their own
|
|
* arrangements and do their own checks.
|
|
*/
|
|
assert(!fdtdec_prepare_fdt());
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This function is a little odd in that it accesses global data. At some
|
|
* point if the architecture board.c files merge this will make more sense.
|
|
* Even now, it is common code.
|
|
*/
|
|
int fdtdec_prepare_fdt(void)
|
|
{
|
|
if (!gd->fdt_blob || ((uintptr_t)gd->fdt_blob & 3) ||
|
|
fdt_check_header(gd->fdt_blob)) {
|
|
#ifdef CONFIG_SPL_BUILD
|
|
puts("Missing DTB\n");
|
|
#else
|
|
puts("No valid device tree binary found - please append one to U-Boot binary, use u-boot-dtb.bin or define CONFIG_OF_EMBED. For sandbox, use -d <file.dtb>\n");
|
|
# ifdef DEBUG
|
|
if (gd->fdt_blob) {
|
|
printf("fdt_blob=%p\n", gd->fdt_blob);
|
|
print_buffer((ulong)gd->fdt_blob, gd->fdt_blob, 4,
|
|
32, 0);
|
|
}
|
|
# endif
|
|
#endif
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
|
|
{
|
|
const u32 *phandle;
|
|
int lookup;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
phandle = fdt_getprop(blob, node, prop_name, NULL);
|
|
if (!phandle)
|
|
return -FDT_ERR_NOTFOUND;
|
|
|
|
lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
|
|
return lookup;
|
|
}
|
|
|
|
/**
|
|
* Look up a property in a node and check that it has a minimum length.
|
|
*
|
|
* @param blob FDT blob
|
|
* @param node node to examine
|
|
* @param prop_name name of property to find
|
|
* @param min_len minimum property length in bytes
|
|
* @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
|
|
found, or -FDT_ERR_BADLAYOUT if not enough data
|
|
* @return pointer to cell, which is only valid if err == 0
|
|
*/
|
|
static const void *get_prop_check_min_len(const void *blob, int node,
|
|
const char *prop_name, int min_len, int *err)
|
|
{
|
|
const void *cell;
|
|
int len;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
cell = fdt_getprop(blob, node, prop_name, &len);
|
|
if (!cell)
|
|
*err = -FDT_ERR_NOTFOUND;
|
|
else if (len < min_len)
|
|
*err = -FDT_ERR_BADLAYOUT;
|
|
else
|
|
*err = 0;
|
|
return cell;
|
|
}
|
|
|
|
int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
|
|
u32 *array, int count)
|
|
{
|
|
const u32 *cell;
|
|
int i, err = 0;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
cell = get_prop_check_min_len(blob, node, prop_name,
|
|
sizeof(u32) * count, &err);
|
|
if (!err) {
|
|
for (i = 0; i < count; i++)
|
|
array[i] = fdt32_to_cpu(cell[i]);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
int fdtdec_get_int_array_count(const void *blob, int node,
|
|
const char *prop_name, u32 *array, int count)
|
|
{
|
|
const u32 *cell;
|
|
int len, elems;
|
|
int i;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
cell = fdt_getprop(blob, node, prop_name, &len);
|
|
if (!cell)
|
|
return -FDT_ERR_NOTFOUND;
|
|
elems = len / sizeof(u32);
|
|
if (count > elems)
|
|
count = elems;
|
|
for (i = 0; i < count; i++)
|
|
array[i] = fdt32_to_cpu(cell[i]);
|
|
|
|
return count;
|
|
}
|
|
|
|
const u32 *fdtdec_locate_array(const void *blob, int node,
|
|
const char *prop_name, int count)
|
|
{
|
|
const u32 *cell;
|
|
int err;
|
|
|
|
cell = get_prop_check_min_len(blob, node, prop_name,
|
|
sizeof(u32) * count, &err);
|
|
return err ? NULL : cell;
|
|
}
|
|
|
|
int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
|
|
{
|
|
const s32 *cell;
|
|
int len;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
cell = fdt_getprop(blob, node, prop_name, &len);
|
|
return cell != NULL;
|
|
}
|
|
|
|
int fdtdec_parse_phandle_with_args(const void *blob, int src_node,
|
|
const char *list_name,
|
|
const char *cells_name,
|
|
int cell_count, int index,
|
|
struct fdtdec_phandle_args *out_args)
|
|
{
|
|
const __be32 *list, *list_end;
|
|
int rc = 0, size, cur_index = 0;
|
|
uint32_t count = 0;
|
|
int node = -1;
|
|
int phandle;
|
|
|
|
/* Retrieve the phandle list property */
|
|
list = fdt_getprop(blob, src_node, list_name, &size);
|
|
if (!list)
|
|
return -ENOENT;
|
|
list_end = list + size / sizeof(*list);
|
|
|
|
/* Loop over the phandles until all the requested entry is found */
|
|
while (list < list_end) {
|
|
rc = -EINVAL;
|
|
count = 0;
|
|
|
|
/*
|
|
* If phandle is 0, then it is an empty entry with no
|
|
* arguments. Skip forward to the next entry.
|
|
*/
|
|
phandle = be32_to_cpup(list++);
|
|
if (phandle) {
|
|
/*
|
|
* Find the provider node and parse the #*-cells
|
|
* property to determine the argument length.
|
|
*
|
|
* This is not needed if the cell count is hard-coded
|
|
* (i.e. cells_name not set, but cell_count is set),
|
|
* except when we're going to return the found node
|
|
* below.
|
|
*/
|
|
if (cells_name || cur_index == index) {
|
|
node = fdt_node_offset_by_phandle(blob,
|
|
phandle);
|
|
if (!node) {
|
|
debug("%s: could not find phandle\n",
|
|
fdt_get_name(blob, src_node,
|
|
NULL));
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
if (cells_name) {
|
|
count = fdtdec_get_int(blob, node, cells_name,
|
|
-1);
|
|
if (count == -1) {
|
|
debug("%s: could not get %s for %s\n",
|
|
fdt_get_name(blob, src_node,
|
|
NULL),
|
|
cells_name,
|
|
fdt_get_name(blob, node,
|
|
NULL));
|
|
goto err;
|
|
}
|
|
} else {
|
|
count = cell_count;
|
|
}
|
|
|
|
/*
|
|
* Make sure that the arguments actually fit in the
|
|
* remaining property data length
|
|
*/
|
|
if (list + count > list_end) {
|
|
debug("%s: arguments longer than property\n",
|
|
fdt_get_name(blob, src_node, NULL));
|
|
goto err;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* All of the error cases above bail out of the loop, so at
|
|
* this point, the parsing is successful. If the requested
|
|
* index matches, then fill the out_args structure and return,
|
|
* or return -ENOENT for an empty entry.
|
|
*/
|
|
rc = -ENOENT;
|
|
if (cur_index == index) {
|
|
if (!phandle)
|
|
goto err;
|
|
|
|
if (out_args) {
|
|
int i;
|
|
|
|
if (count > MAX_PHANDLE_ARGS) {
|
|
debug("%s: too many arguments %d\n",
|
|
fdt_get_name(blob, src_node,
|
|
NULL), count);
|
|
count = MAX_PHANDLE_ARGS;
|
|
}
|
|
out_args->node = node;
|
|
out_args->args_count = count;
|
|
for (i = 0; i < count; i++) {
|
|
out_args->args[i] =
|
|
be32_to_cpup(list++);
|
|
}
|
|
}
|
|
|
|
/* Found it! return success */
|
|
return 0;
|
|
}
|
|
|
|
node = -1;
|
|
list += count;
|
|
cur_index++;
|
|
}
|
|
|
|
/*
|
|
* Result will be one of:
|
|
* -ENOENT : index is for empty phandle
|
|
* -EINVAL : parsing error on data
|
|
* [1..n] : Number of phandle (count mode; when index = -1)
|
|
*/
|
|
rc = index < 0 ? cur_index : -ENOENT;
|
|
err:
|
|
return rc;
|
|
}
|
|
|
|
int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
|
|
u8 *array, int count)
|
|
{
|
|
const u8 *cell;
|
|
int err;
|
|
|
|
cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
|
|
if (!err)
|
|
memcpy(array, cell, count);
|
|
return err;
|
|
}
|
|
|
|
const u8 *fdtdec_locate_byte_array(const void *blob, int node,
|
|
const char *prop_name, int count)
|
|
{
|
|
const u8 *cell;
|
|
int err;
|
|
|
|
cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
|
|
if (err)
|
|
return NULL;
|
|
return cell;
|
|
}
|
|
|
|
int fdtdec_get_config_int(const void *blob, const char *prop_name,
|
|
int default_val)
|
|
{
|
|
int config_node;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
config_node = fdt_path_offset(blob, "/config");
|
|
if (config_node < 0)
|
|
return default_val;
|
|
return fdtdec_get_int(blob, config_node, prop_name, default_val);
|
|
}
|
|
|
|
int fdtdec_get_config_bool(const void *blob, const char *prop_name)
|
|
{
|
|
int config_node;
|
|
const void *prop;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
config_node = fdt_path_offset(blob, "/config");
|
|
if (config_node < 0)
|
|
return 0;
|
|
prop = fdt_get_property(blob, config_node, prop_name, NULL);
|
|
|
|
return prop != NULL;
|
|
}
|
|
|
|
char *fdtdec_get_config_string(const void *blob, const char *prop_name)
|
|
{
|
|
const char *nodep;
|
|
int nodeoffset;
|
|
int len;
|
|
|
|
debug("%s: %s\n", __func__, prop_name);
|
|
nodeoffset = fdt_path_offset(blob, "/config");
|
|
if (nodeoffset < 0)
|
|
return NULL;
|
|
|
|
nodep = fdt_getprop(blob, nodeoffset, prop_name, &len);
|
|
if (!nodep)
|
|
return NULL;
|
|
|
|
return (char *)nodep;
|
|
}
|
|
|
|
int fdtdec_decode_region(const void *blob, int node, const char *prop_name,
|
|
fdt_addr_t *basep, fdt_size_t *sizep)
|
|
{
|
|
const fdt_addr_t *cell;
|
|
int len;
|
|
|
|
debug("%s: %s: %s\n", __func__, fdt_get_name(blob, node, NULL),
|
|
prop_name);
|
|
cell = fdt_getprop(blob, node, prop_name, &len);
|
|
if (!cell || (len < sizeof(fdt_addr_t) * 2)) {
|
|
debug("cell=%p, len=%d\n", cell, len);
|
|
return -1;
|
|
}
|
|
|
|
*basep = fdt_addr_to_cpu(*cell);
|
|
*sizep = fdt_size_to_cpu(cell[1]);
|
|
debug("%s: base=%08lx, size=%lx\n", __func__, (ulong)*basep,
|
|
(ulong)*sizep);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* Read a flash entry from the fdt
|
|
*
|
|
* @param blob FDT blob
|
|
* @param node Offset of node to read
|
|
* @param name Name of node being read
|
|
* @param entry Place to put offset and size of this node
|
|
* @return 0 if ok, -ve on error
|
|
*/
|
|
int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
|
|
struct fmap_entry *entry)
|
|
{
|
|
const char *prop;
|
|
u32 reg[2];
|
|
|
|
if (fdtdec_get_int_array(blob, node, "reg", reg, 2)) {
|
|
debug("Node '%s' has bad/missing 'reg' property\n", name);
|
|
return -FDT_ERR_NOTFOUND;
|
|
}
|
|
entry->offset = reg[0];
|
|
entry->length = reg[1];
|
|
entry->used = fdtdec_get_int(blob, node, "used", entry->length);
|
|
prop = fdt_getprop(blob, node, "compress", NULL);
|
|
entry->compress_algo = prop && !strcmp(prop, "lzo") ?
|
|
FMAP_COMPRESS_LZO : FMAP_COMPRESS_NONE;
|
|
prop = fdt_getprop(blob, node, "hash", &entry->hash_size);
|
|
entry->hash_algo = prop ? FMAP_HASH_SHA256 : FMAP_HASH_NONE;
|
|
entry->hash = (uint8_t *)prop;
|
|
|
|
return 0;
|
|
}
|
|
|
|
u64 fdtdec_get_number(const fdt32_t *ptr, unsigned int cells)
|
|
{
|
|
u64 number = 0;
|
|
|
|
while (cells--)
|
|
number = (number << 32) | fdt32_to_cpu(*ptr++);
|
|
|
|
return number;
|
|
}
|
|
|
|
int fdt_get_resource(const void *fdt, int node, const char *property,
|
|
unsigned int index, struct fdt_resource *res)
|
|
{
|
|
const fdt32_t *ptr, *end;
|
|
int na, ns, len, parent;
|
|
unsigned int i = 0;
|
|
|
|
parent = fdt_parent_offset(fdt, node);
|
|
if (parent < 0)
|
|
return parent;
|
|
|
|
na = fdt_address_cells(fdt, parent);
|
|
ns = fdt_size_cells(fdt, parent);
|
|
|
|
ptr = fdt_getprop(fdt, node, property, &len);
|
|
if (!ptr)
|
|
return len;
|
|
|
|
end = ptr + len / sizeof(*ptr);
|
|
|
|
while (ptr + na + ns <= end) {
|
|
if (i == index) {
|
|
res->start = res->end = fdtdec_get_number(ptr, na);
|
|
res->end += fdtdec_get_number(&ptr[na], ns) - 1;
|
|
return 0;
|
|
}
|
|
|
|
ptr += na + ns;
|
|
i++;
|
|
}
|
|
|
|
return -FDT_ERR_NOTFOUND;
|
|
}
|
|
|
|
int fdt_get_named_resource(const void *fdt, int node, const char *property,
|
|
const char *prop_names, const char *name,
|
|
struct fdt_resource *res)
|
|
{
|
|
int index;
|
|
|
|
index = fdt_find_string(fdt, node, prop_names, name);
|
|
if (index < 0)
|
|
return index;
|
|
|
|
return fdt_get_resource(fdt, node, property, index, res);
|
|
}
|
|
|
|
int fdtdec_decode_memory_region(const void *blob, int config_node,
|
|
const char *mem_type, const char *suffix,
|
|
fdt_addr_t *basep, fdt_size_t *sizep)
|
|
{
|
|
char prop_name[50];
|
|
const char *mem;
|
|
fdt_size_t size, offset_size;
|
|
fdt_addr_t base, offset;
|
|
int node;
|
|
|
|
if (config_node == -1) {
|
|
config_node = fdt_path_offset(blob, "/config");
|
|
if (config_node < 0) {
|
|
debug("%s: Cannot find /config node\n", __func__);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
if (!suffix)
|
|
suffix = "";
|
|
|
|
snprintf(prop_name, sizeof(prop_name), "%s-memory%s", mem_type,
|
|
suffix);
|
|
mem = fdt_getprop(blob, config_node, prop_name, NULL);
|
|
if (!mem) {
|
|
debug("%s: No memory type for '%s', using /memory\n", __func__,
|
|
prop_name);
|
|
mem = "/memory";
|
|
}
|
|
|
|
node = fdt_path_offset(blob, mem);
|
|
if (node < 0) {
|
|
debug("%s: Failed to find node '%s': %s\n", __func__, mem,
|
|
fdt_strerror(node));
|
|
return -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* Not strictly correct - the memory may have multiple banks. We just
|
|
* use the first
|
|
*/
|
|
if (fdtdec_decode_region(blob, node, "reg", &base, &size)) {
|
|
debug("%s: Failed to decode memory region %s\n", __func__,
|
|
mem);
|
|
return -EINVAL;
|
|
}
|
|
|
|
snprintf(prop_name, sizeof(prop_name), "%s-offset%s", mem_type,
|
|
suffix);
|
|
if (fdtdec_decode_region(blob, config_node, prop_name, &offset,
|
|
&offset_size)) {
|
|
debug("%s: Failed to decode memory region '%s'\n", __func__,
|
|
prop_name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
*basep = base + offset;
|
|
*sizep = offset_size;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int decode_timing_property(const void *blob, int node, const char *name,
|
|
struct timing_entry *result)
|
|
{
|
|
int length, ret = 0;
|
|
const u32 *prop;
|
|
|
|
prop = fdt_getprop(blob, node, name, &length);
|
|
if (!prop) {
|
|
debug("%s: could not find property %s\n",
|
|
fdt_get_name(blob, node, NULL), name);
|
|
return length;
|
|
}
|
|
|
|
if (length == sizeof(u32)) {
|
|
result->typ = fdtdec_get_int(blob, node, name, 0);
|
|
result->min = result->typ;
|
|
result->max = result->typ;
|
|
} else {
|
|
ret = fdtdec_get_int_array(blob, node, name, &result->min, 3);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int fdtdec_decode_display_timing(const void *blob, int parent, int index,
|
|
struct display_timing *dt)
|
|
{
|
|
int i, node, timings_node;
|
|
u32 val = 0;
|
|
int ret = 0;
|
|
|
|
timings_node = fdt_subnode_offset(blob, parent, "display-timings");
|
|
if (timings_node < 0)
|
|
return timings_node;
|
|
|
|
for (i = 0, node = fdt_first_subnode(blob, timings_node);
|
|
node > 0 && i != index;
|
|
node = fdt_next_subnode(blob, node))
|
|
i++;
|
|
|
|
if (node < 0)
|
|
return node;
|
|
|
|
memset(dt, 0, sizeof(*dt));
|
|
|
|
ret |= decode_timing_property(blob, node, "hback-porch",
|
|
&dt->hback_porch);
|
|
ret |= decode_timing_property(blob, node, "hfront-porch",
|
|
&dt->hfront_porch);
|
|
ret |= decode_timing_property(blob, node, "hactive", &dt->hactive);
|
|
ret |= decode_timing_property(blob, node, "hsync-len", &dt->hsync_len);
|
|
ret |= decode_timing_property(blob, node, "vback-porch",
|
|
&dt->vback_porch);
|
|
ret |= decode_timing_property(blob, node, "vfront-porch",
|
|
&dt->vfront_porch);
|
|
ret |= decode_timing_property(blob, node, "vactive", &dt->vactive);
|
|
ret |= decode_timing_property(blob, node, "vsync-len", &dt->vsync_len);
|
|
ret |= decode_timing_property(blob, node, "clock-frequency",
|
|
&dt->pixelclock);
|
|
|
|
dt->flags = 0;
|
|
val = fdtdec_get_int(blob, node, "vsync-active", -1);
|
|
if (val != -1) {
|
|
dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
|
|
DISPLAY_FLAGS_VSYNC_LOW;
|
|
}
|
|
val = fdtdec_get_int(blob, node, "hsync-active", -1);
|
|
if (val != -1) {
|
|
dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
|
|
DISPLAY_FLAGS_HSYNC_LOW;
|
|
}
|
|
val = fdtdec_get_int(blob, node, "de-active", -1);
|
|
if (val != -1) {
|
|
dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
|
|
DISPLAY_FLAGS_DE_LOW;
|
|
}
|
|
val = fdtdec_get_int(blob, node, "pixelclk-active", -1);
|
|
if (val != -1) {
|
|
dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE :
|
|
DISPLAY_FLAGS_PIXDATA_NEGEDGE;
|
|
}
|
|
|
|
if (fdtdec_get_bool(blob, node, "interlaced"))
|
|
dt->flags |= DISPLAY_FLAGS_INTERLACED;
|
|
if (fdtdec_get_bool(blob, node, "doublescan"))
|
|
dt->flags |= DISPLAY_FLAGS_DOUBLESCAN;
|
|
if (fdtdec_get_bool(blob, node, "doubleclk"))
|
|
dt->flags |= DISPLAY_FLAGS_DOUBLECLK;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int fdtdec_setup(void)
|
|
{
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
# ifdef CONFIG_OF_EMBED
|
|
/* Get a pointer to the FDT */
|
|
gd->fdt_blob = __dtb_dt_begin;
|
|
# elif defined CONFIG_OF_SEPARATE
|
|
# ifdef CONFIG_SPL_BUILD
|
|
/* FDT is at end of BSS unless it is in a different memory region */
|
|
if (IS_ENABLED(CONFIG_SPL_SEPARATE_BSS))
|
|
gd->fdt_blob = (ulong *)&_image_binary_end;
|
|
else
|
|
gd->fdt_blob = (ulong *)&__bss_end;
|
|
# else
|
|
/* FDT is at end of image */
|
|
gd->fdt_blob = (ulong *)&_end;
|
|
# endif
|
|
# elif defined(CONFIG_OF_HOSTFILE)
|
|
if (sandbox_read_fdt_from_file()) {
|
|
puts("Failed to read control FDT\n");
|
|
return -1;
|
|
}
|
|
# endif
|
|
# ifndef CONFIG_SPL_BUILD
|
|
/* Allow the early environment to override the fdt address */
|
|
gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
|
|
(uintptr_t)gd->fdt_blob);
|
|
# endif
|
|
#endif
|
|
return fdtdec_prepare_fdt();
|
|
}
|
|
|
|
#endif /* !USE_HOSTCC */
|