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6dd4b01432
Early in boot it is necessary to decode the PCI device/function values for particular peripherals in the device tree or of-platdata. This is needed in TPL where CONFIG_PCI is not defined. To handle this, move pci_get_devfn() into a file that is built even when CONFIG_PCI is not defined. Also add a function for use by of-platdata, to convert a reg property to a pci_dev_t. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2013 Google, Inc
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*/
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#include <common.h>
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#include <dm/device.h>
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#include <dm/ofnode.h>
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#include <dm/read.h>
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#include <dm/util.h>
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#include <linux/libfdt.h>
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#include <vsprintf.h>
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#ifdef CONFIG_DM_WARN
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void dm_warn(const char *fmt, ...)
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{
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va_list args;
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va_start(args, fmt);
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vprintf(fmt, args);
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va_end(args);
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}
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#endif
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int list_count_items(struct list_head *head)
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{
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struct list_head *node;
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int count = 0;
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list_for_each(node, head)
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count++;
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return count;
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}
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
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bool dm_ofnode_pre_reloc(ofnode node)
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{
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#if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD)
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/* for SPL and TPL the remaining nodes after the fdtgrep 1st pass
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* had property dm-pre-reloc or u-boot,dm-spl/tpl.
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* They are removed in final dtb (fdtgrep 2nd pass)
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*/
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return true;
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#else
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if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
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return true;
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if (ofnode_read_bool(node, "u-boot,dm-pre-proper"))
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return true;
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/*
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* In regular builds individual spl and tpl handling both
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* count as handled pre-relocation for later second init.
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*/
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if (ofnode_read_bool(node, "u-boot,dm-spl") ||
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ofnode_read_bool(node, "u-boot,dm-tpl"))
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return true;
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return false;
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#endif
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}
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#endif
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#if !CONFIG_IS_ENABLED(OF_PLATDATA)
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int pci_get_devfn(struct udevice *dev)
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{
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struct fdt_pci_addr addr;
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int ret;
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/* Extract the devfn from fdt_pci_addr */
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ret = ofnode_read_pci_addr(dev_ofnode(dev), FDT_PCI_SPACE_CONFIG,
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"reg", &addr);
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if (ret) {
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if (ret != -ENOENT)
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return -EINVAL;
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}
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return addr.phys_hi & 0xff00;
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}
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#endif
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