From be3e3cdc614cf580cf345474cfa2b52182503834 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Tue, 15 Oct 2024 05:10:27 -0600
Subject: [PATCH] loader.efi: Make rsdp global

Make rsdp pointer to the RSDP global so we can look up other tables.

Sponsored by:		Netflix
Reviewed by:		andrew
Differential Revision:	https://reviews.freebsd.org/D47083

(cherry picked from commit c5f3a7f62217f20f0c7b2c4fc3fb2646336b0802)
---
 stand/efi/loader/main.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/stand/efi/loader/main.c b/stand/efi/loader/main.c
index 0c6e5de4a03..272750d5d05 100644
--- a/stand/efi/loader/main.c
+++ b/stand/efi/loader/main.c
@@ -110,6 +110,11 @@ UINT16 boot_current;
  */
 EFI_LOADED_IMAGE *boot_img;
 
+/*
+ * RSDP base table.
+ */
+ACPI_TABLE_RSDP *rsdp;
+
 static bool
 has_keyboard(void)
 {
@@ -933,7 +938,6 @@ ptov(uintptr_t x)
 static void
 acpi_detect(void)
 {
-	ACPI_TABLE_RSDP *rsdp;
 	char buf[24];
 	int revision;