cpu/via/nano: Drop support

Relocatable ramstage, postcar stage and C_ENVIRONMENT_BOOTBLOCK are
now mandatory features, which this platform lacks.

Change-Id: I6d9771e97619c3775f8325daf4b8453cd51d6571
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36950
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Reviewed-by: Nico Huber <nico.h@gmx.de>

1 files changed, 0 insertions, 143 deletions

diff --git a/src/cpu/via/nano/update_ucode.c b/src/cpu/via/nano/update_ucode.c
deleted file mode 100644
index 373a7d8db8..0000000000
--- a/src/cpu/via/nano/update_ucode.c
+++ /dev/null
@@ -1,143 +0,0 @@
-/*
- * This file is part of the coreboot project.
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include "update_ucode.h"
-#include <cpu/x86/msr.h>
-#include <console/console.h>
-#include <stddef.h>
-#include <arch/cpu.h>
-#include <cbfs.h>
-
-static ucode_update_status nano_apply_ucode(const nano_ucode_header *ucode)
-{
-	printk(BIOS_SPEW, "Attempting to apply microcode update\n");
-
-	msr_t msr;
-	/* Address of ucode block goes in msr.lo for 32-bit mode
-	 * Now remember, we need to pass the address of the actual microcode,
-	 * not the header. The header is just there to help us. */
-	msr.lo = (unsigned int)(&(ucode->ucode_start));
-	msr.hi = 0;
-	wrmsr(IA32_BIOS_UPDT_TRIG, msr);
-
-	/* Let's see if we updated successfully */
-	msr = rdmsr(MSR_UCODE_UPDATE_STATUS);
-
-	return msr.lo & 0x07;
-}
-
-static void nano_print_ucode_info(const nano_ucode_header *ucode)
-{
-	printk(BIOS_SPEW, "Microcode update information:\n");
-	printk(BIOS_SPEW, "Name: %8s\n", ucode->name);
-	printk(BIOS_SPEW, "Date: %u/%u/%u\n", ucode->month,
-	       ucode->day, ucode->year);
-}
-
-static ucode_validity nano_ucode_is_valid(const nano_ucode_header *ucode)
-{
-	/* We must have a valid signature */
-	if (ucode->signature != NANO_UCODE_SIGNATURE)
-		return NANO_UCODE_SIGNATURE_ERROR;
-	/* The size of the head must be exactly 12 double words */
-	if ((ucode->total_size - ucode->payload_size) != NANO_UCODE_HEADER_SIZE)
-		return NANO_UCODE_WRONG_SIZE;
-
-	/* How about a checksum ? Checksum must be 0
-	 * Two's complement done over the entire file, including the header */
-	int i;
-	u32 check = 0;
-	u32 *raw = (void *) ucode;
-	for (i = 0; i < ((ucode->total_size) >> 2); i++) {
-		check += raw[i];
-	}
-	if (check != 0)
-		return NANO_UCODE_CHECKSUM_FAIL;
-	/* Made it here huh? Then it looks valid to us.
-	 * If there's anything else wrong, the CPU will reject the update */
-	return NANO_UCODE_VALID;
-}
-
-static void nano_print_ucode_status(ucode_update_status stat)
-{
-	switch (stat)
-	{
-	case UCODE_UPDATE_SUCCESS:
-		printk(BIOS_INFO, "Microcode update successful.\n");
-		break;
-	case UCODE_UPDATE_FAIL:
-		printk(BIOS_ALERT, "Microcode update failed, bad environment."
-				   "Update was not applied.\n");
-		break;
-	case UCODE_UPDATE_WRONG_CPU:
-		printk(BIOS_ALERT, "Update not applicable to this CPU.\n");
-		break;
-	case UCODE_INVALID_UPDATE_BLOCK:
-		printk(BIOS_ALERT, "Microcode block invalid."
-				   "Update was not applied.\n");
-		break;
-	default:
-		printk(BIOS_ALERT, "Unknown status. No update applied.\n");
-	}
-}
-
-unsigned int nano_update_ucode(void)
-{
-	size_t i;
-	unsigned int n_updates = 0;
-	u32 fms = cpuid_eax(0x1);
-	/* Considering we are running with eXecute-In-Place (XIP), there's no
-	 * need to worry that accessing data from ROM will slow us down.
-	 * Microcode data should be aligned to a 4-byte boundary, but CBFS
-	 * already does that for us (Do you, CBFS?) */
-	u32 *ucode_data;
-	size_t ucode_len;
-
-	ucode_data = cbfs_boot_map_with_leak("cpu_microcode_blob.bin",
-					     CBFS_TYPE_MICROCODE, &ucode_len);
-	/* Oops, did you forget to include the microcode ? */
-	if (ucode_data == NULL) {
-		printk(BIOS_ALERT, "WARNING: No microcode file found in CBFS. "
-				   "Aborting microcode updates\n");
-		return 0;
-	}
-
-	/* We might do a lot of loops searching for the microcode updates, but
-	 * keep in mind, nano_ucode_is_valid searches for the signature before
-	 * doing anything else. */
-	for (i = 0; i < (ucode_len >> 2); /* don't increment i here */)
-	{
-		ucode_update_status stat;
-		const nano_ucode_header * ucode = (void *)(&ucode_data[i]);
-		if (nano_ucode_is_valid(ucode) != NANO_UCODE_VALID) {
-			i++;
-			continue;
-		}
-		/* Since we have a valid microcode, there's no need to search
-		 * in this region, so we restart our search at the end of this
-		 * microcode */
-		i += (ucode->total_size >> 2);
-		/* Is the microcode compatible with our CPU? */
-		if (ucode->applicable_fms != fms) continue;
-		/* For our most curious users */
-		nano_print_ucode_info(ucode);
-		/* The meat of the pie */
-		stat = nano_apply_ucode(ucode);
-		/* The user might want to know how the update went */
-		nano_print_ucode_status(stat);
-		if (stat == UCODE_UPDATE_SUCCESS) n_updates++;
-	}
-
-	return n_updates;
-}