52 lines
1.7 KiB
Diff
52 lines
1.7 KiB
Diff
From 583d37d192d92c5e92efa68b1d97f8ecdef71c47 Mon Sep 17 00:00:00 2001
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From: Jonas Karlman <jonas@kwiboo.se>
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Date: Sun, 12 Nov 2023 10:57:21 +0000
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Subject: [PATCH] bootstd: efi: Initialize PCI to discover network controllers
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Boards like Radxa ROCK 5 Model B and NanoPi R5C require PCI to be
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initialized in order to discover their onboard network controllers.
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During standard boot, PCI gets initialized after faster boot media have
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been evaluated. However when an EFI bootflow is run from a fast boot
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media, PCI initialization may not have happended and as a result no
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network device is exposed to EFI.
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Fix this by initializing PCI during EFI bootflow when no ethernet device
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can be found.
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This allows chainloading e.g. iPXE on ROCK 5B and NanoPi R5C without
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having to enable PCI_INIT_R. Enabling of PCI_INIT_R has the side affect
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of slowing down booting from faster boot media, by adding ~1 second off
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boot delay for each unocupied M.2 slot.
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Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
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---
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boot/bootmeth_efi.c | 9 +++++++++
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1 file changed, 9 insertions(+)
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--- a/boot/bootmeth_efi.c
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+++ b/boot/bootmeth_efi.c
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@@ -16,6 +16,7 @@
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#include <dm.h>
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#include <efi_loader.h>
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#include <fs.h>
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+#include <init.h>
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#include <malloc.h>
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#include <mapmem.h>
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#include <mmc.h>
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@@ -403,6 +404,14 @@ static int distro_efi_read_bootflow(stru
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{
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int ret;
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+ /* init PCI first since this is often used to provide Ehternet */
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+ if (IS_ENABLED(CONFIG_NETDEVICES) && IS_ENABLED(CONFIG_PCI) &&
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+ !eth_get_dev()) {
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+ ret = pci_init();
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+ if (ret)
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+ return log_msg_ret("pci", ret);
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+ }
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+
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/*
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* bootmeth_efi doesn't allocate any buffer neither for blk nor net device
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* set flag to avoid freeing static buffer.
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