88 lines
2.5 KiB
Diff
88 lines
2.5 KiB
Diff
From cc55079665ad515d663da022317e649679a7621f Mon Sep 17 00:00:00 2001
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From: Gerd Hoffmann <kraxel@redhat.com>
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Date: Wed, 3 May 2023 10:31:23 +0200
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Subject: [PATCH 1/2] add hwerr_printf function for threads
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RH-Author: Gerd Hoffmann <None>
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RH-MergeRequest: 6: log error message to screen when booting with (unsupported) 4k sectors
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RH-Jira: RHEL-7110
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RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
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RH-Commit: [1/2] 37f3d1b45b289e4efb18817c265be2bff2606ebb (kraxel.rh/centos-src-seabios)
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Printing to the screen from threads doesn't work, because that involves
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a switch to real mode for using int10h services.
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Add a string buffer and hwerr_printf() helper functions to store error
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messages. Print the buffer later, after device initialization, from main
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thread in case it is not empty.
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Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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---
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src/output.c | 17 +++++++++++++++++
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src/output.h | 5 +++++
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src/post.c | 4 ++++
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3 files changed, 26 insertions(+)
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diff --git a/src/output.c b/src/output.c
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index 0184444c..8c9d6b8f 100644
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--- a/src/output.c
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+++ b/src/output.c
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@@ -419,6 +419,23 @@ snprintf(char *str, size_t size, const char *fmt, ...)
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return end - str;
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}
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+char hwerror_str[512];
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+struct snprintfinfo hwerror_info = {
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+ .info = { putc_str },
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+ .str = hwerror_str,
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+ .end = hwerror_str + sizeof(hwerror_str) - 1,
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+};
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+
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+void
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+hwerr_printf(const char *fmt, ...)
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+{
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+ ASSERT32FLAT();
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+ va_list args;
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+ va_start(args, fmt);
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+ bvprintf(&hwerror_info.info, fmt, args);
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+ va_end(args);
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+}
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+
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// Build a formatted string - malloc'ing the memory.
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char *
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znprintf(size_t size, const char *fmt, ...)
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diff --git a/src/output.h b/src/output.h
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index 14288cf5..4548d2d4 100644
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--- a/src/output.h
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+++ b/src/output.h
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@@ -16,6 +16,11 @@ char * znprintf(size_t size, const char *fmt, ...)
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__attribute__ ((format (printf, 2, 3)));
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void __dprintf(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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+
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+extern char hwerror_str[512];
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+void hwerr_printf(const char *fmt, ...)
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+ __attribute__ ((format (printf, 1, 2)));
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+
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struct bregs;
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void __debug_enter(struct bregs *regs, const char *fname);
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void __debug_isr(const char *fname);
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diff --git a/src/post.c b/src/post.c
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index f93106a1..3e85da43 100644
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--- a/src/post.c
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+++ b/src/post.c
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@@ -216,6 +216,10 @@ maininit(void)
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device_hardware_setup();
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wait_threads();
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}
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+ if (hwerror_str[0])
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+ printf("\n"
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+ "hardware setup errors:\n"
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+ "%s", hwerror_str);
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// Run option roms
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optionrom_setup();
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--
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2.39.3
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