Merge https://gitlab.denx.de/u-boot/custodians/u-boot-x86

- Propagate acpi_rsdp_addr to x86 kernel via boot parameters

arch/x86/include/asm/bootparam.h

@@ -94,7 +94,8 @@ struct boot_params {
 	__u8  _pad2[4];					/* 0x054 */
 	__u64  tboot_addr;				/* 0x058 */
 	struct ist_info ist_info;			/* 0x060 */
-	__u8  _pad3[16];				/* 0x070 */
+	__u64 acpi_rsdp_addr;				/* 0x070 */
+	__u8  _pad3[8];					/* 0x078 */
 	__u8  hd0_info[16];	/* obsolete! */		/* 0x080 */
 	__u8  hd1_info[16];	/* obsolete! */		/* 0x090 */
 	struct sys_desc_table sys_desc_table;		/* 0x0a0 */

arch/x86/lib/zimage.c

@@ -288,6 +288,10 @@ int setup_zimage(struct boot_params *setup_base, char *cmd_line, int auto_boot,
 		hdr->hardware_subarch = X86_SUBARCH_INTEL_MID;
 #endif
 
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+	setup_base->acpi_rsdp_addr = acpi_get_rsdp_addr();
+#endif
+
 	setup_device_tree(hdr, (const void *)env_get_hex("fdtaddr", 0));
 	setup_video(&setup_base->screen_info);