sc7180: Add AOP firmware support

Developer/Reviewer, be aware of this patch from Napali:
https://review.coreboot.org/c/coreboot/+/25210/85

Change-Id: I1cd552fbf03b5135e5911f1143f8778cad81e360
Signed-off-by: Ashwin Kumar <ashk@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35502
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>

src/soc/qualcomm/sc7180/Makefile.inc

@@ -40,6 +40,7 @@ ramstage-y += gpio.c
 ramstage-$(CONFIG_DRIVERS_UART) += uart_bitbang.c
 ramstage-y += clock.c
 ramstage-$(CONFIG_SC7180_QSPI) += qspi.c
+ramstage-y += aop_load_reset.c
 
 ################################################################################
 

src/soc/qualcomm/sc7180/aop_load_reset.c

@@ -0,0 +1,43 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019, The Linux Foundation.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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 <string.h>
+#include <arch/cache.h>
+#include <cbfs.h>
+#include <halt.h>
+#include <console/console.h>
+#include <timestamp.h>
+#include <soc/mmu.h>
+#include <soc/aop.h>
+#include <soc/clock.h>
+
+void aop_fw_load_reset(void)
+{
+	bool aop_fw_entry;
+
+	struct prog aop_fw_prog =
+		PROG_INIT(PROG_PAYLOAD, CONFIG_CBFS_PREFIX "/aop");
+
+	if (prog_locate(&aop_fw_prog))
+		die("SOC image: AOP_FW not found");
+
+	aop_fw_entry = selfload(&aop_fw_prog);
+	if (!aop_fw_entry)
+		die("SOC image: AOP load failed");
+
+	clock_reset_aop();
+
+	printk(BIOS_DEBUG, "\nSOC:AOP brought out of reset.\n");
+}

src/soc/qualcomm/sc7180/include/soc/aop.h

@@ -0,0 +1,21 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2019, The Linux Foundation.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * 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.
+ */
+
+#ifndef _SOC_QUALCOMM_SC7180_AOP_H__
+#define _SOC_QUALCOMM_SC7180_AOP_H__
+
+void aop_fw_load_reset(void);
+
+#endif  // _SOC_QUALCOMM_SC7180_AOP_H__

src/soc/qualcomm/sc7180/include/soc/memlayout.ld

@@ -24,8 +24,16 @@
 #define BSRAM_START(addr) SYMBOL(bsram, addr)
 #define BSRAM_END(addr) SYMBOL(ebsram, addr)
 
+/* AOP : 0x0B000000 - 0x0B100000 */
+#define AOPSRAM_START(addr) SYMBOL(aopsram, addr)
+#define AOPSRAM_END(addr) SYMBOL(eaopsram, addr)
+
 SECTIONS
 {
+	AOPSRAM_START(0x0B000000)
+	REGION(aop, 0x0B000000, 0x100000, 4096)
+	AOPSRAM_END(0x0B100000)
+
 	SSRAM_START(0x14680000)
 	OVERLAP_VERSTAGE_ROMSTAGE(0x14680000, 100K)
 	REGION(qcsdi, 0x14699000, 52K, 4K)
@@ -52,6 +60,7 @@ SECTIONS
 
 	DRAM_START(0x80000000)
 	/* Various hardware/software subsystems make use of this area */
+	REGION(dram_aop,  0x80800000, 0x040000, 0x1000)
 	REGION(dram_soc,  0x80900000, 0x300000, 0x1000)
 	BL31(0x80C00000, 0x1A800000)
 	POSTRAM_CBFS_CACHE(0x9F800000, 16M)

src/soc/qualcomm/sc7180/include/soc/symbols.h

@@ -25,5 +25,6 @@ DECLARE_REGION(dram_soc)
 DECLARE_REGION(dcb)
 DECLARE_REGION(pmic)
 DECLARE_REGION(limits_cfg)
+DECLARE_REGION(aop)
 
 #endif /* _SOC_QUALCOMM_SC7180_SYMBOLS_H_ */

src/soc/qualcomm/sc7180/mmu.c

@@ -32,3 +32,8 @@ void sc7180_mmu_init(void)
 
 	mmu_enable();
 }
+
+void soc_mmu_dram_config_post_dram_init(void)
+{
+	mmu_config_range((void *)_aop, REGION_SIZE(aop), CACHED_RAM);
+}

src/soc/qualcomm/sc7180/soc.c

@@ -18,18 +18,21 @@
 #include <soc/mmu.h>
 #include <soc/mmu_common.h>
 #include <soc/symbols.h>
+#include <soc/aop.h>
 
 static void soc_read_resources(struct device *dev)
 {
 	ram_resource(dev, 0, (uintptr_t)ddr_region->offset / KiB,
 				ddr_region->size / KiB);
-	reserved_ram_resource(dev, 1, (uintptr_t)_dram_soc / KiB,
+	reserved_ram_resource(dev, 1, (uintptr_t)_dram_aop / KiB,
+				REGION_SIZE(dram_aop) / KiB);
+	reserved_ram_resource(dev, 2, (uintptr_t)_dram_soc / KiB,
 				REGION_SIZE(dram_soc) / KiB);
 }
 
 static void soc_init(struct device *dev)
 {
-
+	aop_fw_load_reset();
 }
 
 static struct device_operations soc_ops = {