armv8: cavium: Add an implementation of ATF calling functions

This commit adds functions issuing calls to the product-specific ATF
services

Signed-off-by: Sergey Temerkhanov <s.temerkhanov@gmail.com>
Signed-off-by: Radha Mohan Chintakuntla <rchintakuntla@cavium.com>

6 files changed, 430 insertions, 1 deletions

diff --git a/board/cavium/thunderx/Makefile b/board/cavium/thunderx/Makefile
index 306044a64a..c78c414cdf 100644
--- a/board/cavium/thunderx/Makefile
+++ b/board/cavium/thunderx/Makefile
@@ -5,4 +5,4 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y	:= thunderx.o
+obj-y	:= thunderx.o atf.o
diff --git a/board/cavium/thunderx/atf.c b/board/cavium/thunderx/atf.c
new file mode 100644
index 0000000000..6ab9de944f
--- /dev/null
+++ b/board/cavium/thunderx/atf.c
@@ -0,0 +1,312 @@
+/**
+ * (C) Copyright 2014, Cavium Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+**/
+
+#include <common.h>
+#include <asm/io.h>
+
+#include <asm/system.h>
+#include <cavium/thunderx_svc.h>
+#include <cavium/atf.h>
+#include <cavium/atf_part.h>
+
+#include <asm/psci.h>
+
+#include <malloc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+ssize_t atf_read_mmc(uintptr_t offset, void *buffer, size_t size)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_MMC_READ;
+	regs.regs[1] = offset;
+	regs.regs[2] = size;
+	regs.regs[3] = (uintptr_t)buffer;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_read_nor(uintptr_t offset, void *buffer, size_t size)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_NOR_READ;
+	regs.regs[1] = offset;
+	regs.regs[2] = size;
+	regs.regs[3] = (uintptr_t)buffer;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_get_pcount(void)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_PART_COUNT;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_get_part(struct storage_partition *part, unsigned int index)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_GET_PART;
+	regs.regs[1] = (uintptr_t)part;
+	regs.regs[2] = index;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_erase_nor(uintptr_t offset, size_t size)
+{
+	struct pt_regs regs;
+
+	regs.regs[0] = THUNDERX_NOR_ERASE;
+	regs.regs[1] = offset;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_write_nor(uintptr_t offset, const void *buffer, size_t size)
+{
+	struct pt_regs regs;
+
+	regs.regs[0] = THUNDERX_NOR_WRITE;
+	regs.regs[1] = offset;
+	regs.regs[2] = size;
+	regs.regs[3] = (uintptr_t)buffer;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_write_mmc(uintptr_t offset, const void *buffer, size_t size)
+{
+	struct pt_regs regs;
+
+	regs.regs[0] = THUNDERX_MMC_WRITE;
+	regs.regs[1] = offset;
+	regs.regs[2] = size;
+	regs.regs[3] = (uintptr_t)buffer;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_dram_size(unsigned int node)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_DRAM_SIZE;
+	regs.regs[1] = node;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_node_count(void)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_NODE_COUNT;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_env_count(void)
+{
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_ENV_COUNT;
+
+	smc_call(&regs);
+
+	return regs.regs[0];
+}
+
+ssize_t atf_env_string(size_t index, char *str)
+{
+	uint64_t *buf = (void *)str;
+	struct pt_regs regs;
+	regs.regs[0] = THUNDERX_ENV_STRING;
+	regs.regs[1] = index;
+
+	smc_call(&regs);
+
+	if (regs.regs > 0) {
+		buf[0] = regs.regs[0];
+		buf[1] = regs.regs[1];
+		buf[2] = regs.regs[2];
+		buf[3] = regs.regs[3];
+
+		return 1;
+	} else {
+		return regs.regs[0];
+	}
+}
+
+#ifdef CONFIG_CMD_ATF
+
+static void atf_print_ver(void)
+{
+	struct pt_regs regs;
+	regs.regs[0] = ARM_STD_SVC_VERSION;
+
+	smc_call(&regs);
+
+	printf("ARM Std FW version: %ld.%ld\n", regs.regs[0], regs.regs[1]);
+
+	regs.regs[0] = THUNDERX_SVC_VERSION;
+
+	smc_call(&regs);
+
+	printf("ThunderX OEM ver: %ld.%ld\n", regs.regs[0], regs.regs[1]);
+}
+
+static void atf_print_uid(void)
+{
+}
+
+static void atf_print_part_table(void)
+{
+	size_t pcount;
+	unsigned long i;
+	int ret;
+	char *ptype;
+
+	struct storage_partition *part = (void *)CONFIG_SYS_LOWMEM_BASE;
+
+	pcount = atf_get_pcount();
+
+	printf("Partition count: %lu\n\n", pcount);
+	printf("%10s %10s %10s\n", "Type", "Size", "Offset");
+
+	for (i = 0; i < pcount; i++) {
+		ret = atf_get_part(part, i);
+
+		if (ret < 0) {
+			printf("Uknown error while reading partition: %d\n",
+			       ret);
+			return;
+		}
+
+		switch (part->type) {
+		case PARTITION_NBL1FW_REST:
+			ptype = "NBL1FW";
+			break;
+		case PARTITION_BL2_BL31:
+			ptype = "BL2_BL31";
+			break;
+		case PARTITION_UBOOT:
+			ptype = "BOOTLDR";
+			break;
+		case PARTITION_KERNEL:
+			ptype = "KERNEL";
+			break;
+		case PARTITION_DEVICE_TREE:
+			ptype = "DEVTREE";
+			break;
+		default:
+			ptype = "UNKNOWN";
+		}
+		printf("%10s %10d %10lx\n", ptype, part->size, part->offset);
+	}
+}
+
+int do_atf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	ssize_t ret;
+	size_t size, offset;
+	void *buffer = 0;
+	unsigned int index, node;
+	char str[4 * sizeof(uint64_t)];
+
+	if ((argc == 5) && !strcmp(argv[1], "readmmc")) {
+		buffer = (void *)simple_strtoul(argv[2], NULL, 16);
+		offset = simple_strtoul(argv[3], NULL, 10);
+		size = simple_strtoul(argv[4], NULL, 10);
+
+		ret = atf_read_mmc(offset, buffer, size);
+	} else if ((argc == 5) && !strcmp(argv[1], "readnor")) {
+		buffer = (void *)simple_strtoul(argv[2], NULL, 16);
+		offset = simple_strtoul(argv[3], NULL, 10);
+		size = simple_strtoul(argv[4], NULL, 10);
+
+		ret = atf_read_nor(offset, buffer, size);
+	} else if ((argc == 5) && !strcmp(argv[1], "writemmc")) {
+		buffer = (void *)simple_strtoul(argv[2], NULL, 16);
+		offset = simple_strtoul(argv[3], NULL, 10);
+		size = simple_strtoul(argv[4], NULL, 10);
+
+		ret = atf_write_mmc(offset, buffer, size);
+	} else if ((argc == 5) && !strcmp(argv[1], "writenor")) {
+		buffer = (void *)simple_strtoul(argv[2], NULL, 16);
+		offset = simple_strtoul(argv[3], NULL, 10);
+		size = simple_strtoul(argv[4], NULL, 10);
+
+		ret = atf_write_nor(offset, buffer, size);
+	} else if ((argc == 2) && !strcmp(argv[1], "part")) {
+		atf_print_part_table();
+	} else if ((argc == 4) && !strcmp(argv[1], "erasenor")) {
+		offset = simple_strtoul(argv[2], NULL, 10);
+		size = simple_strtoul(argv[3], NULL, 10);
+
+		ret = atf_erase_nor(offset, size);
+	} else if ((argc == 2) && !strcmp(argv[1], "envcount")) {
+		ret = atf_env_count();
+		printf("Number of environment strings: %zd\n", ret);
+	} else if ((argc == 3) && !strcmp(argv[1], "envstring")) {
+		index = simple_strtoul(argv[2], NULL, 10);
+		ret = atf_env_string(index, str);
+		if (ret > 0)
+			printf("Environment string %d: %s\n", index, str);
+		else
+			printf("Return code: %zd\n", ret);
+	} else if ((argc == 3) && !strcmp(argv[1], "dramsize")) {
+		node = simple_strtoul(argv[2], NULL, 10);
+		ret = atf_dram_size(node);
+		printf("DRAM size: %zd Mbytes\n", ret >> 20);
+	} else if ((argc == 2) && !strcmp(argv[1], "nodes")) {
+		ret = atf_node_count();
+		printf("Nodes count: %zd\n", ret);
+	} else if ((argc == 2) && !strcmp(argv[1], "ver")) {
+		atf_print_ver();
+	} else if ((argc == 2) && !strcmp(argv[1], "uid")) {
+		atf_print_uid();
+	} else {
+		return CMD_RET_USAGE;
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	atf,   10,   1,     do_atf,
+	"issue calls to ATF",
+	"\t readmmc addr offset size - read MMC card\n"
+	"\t readnor addr offset size - read NOR flash\n"
+	"\t writemmc addr offset size - write MMC card\n"
+	"\t writenor addr offset size - write NOR flash\n"
+	"\t erasenor offset size - erase NOR flash\n"
+	"\t nodes - number of nodes\n"
+	"\t dramsize node - size of DRAM attached to node\n"
+	"\t envcount - number of environment strings\n"
+	"\t envstring index - print the environment string\n"
+	"\t part - print MMC partition table\n"
+	"\t ver - print ATF call set versions\n"
+);
+
+#endif
diff --git a/include/cavium/atf.h b/include/cavium/atf.h
new file mode 100644
index 0000000000..0a53c2f1de
--- /dev/null
+++ b/include/cavium/atf.h
@@ -0,0 +1,22 @@
+/**
+ * (C) Copyright 2014, Cavium Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+**/
+#ifndef __ATF_H__
+#define __ATF_H__
+#include <cavium/atf_part.h>
+
+ssize_t atf_read_mmc(uintptr_t offset, void *buffer, size_t size);
+ssize_t atf_read_nor(uintptr_t offset, void *buffer, size_t size);
+ssize_t atf_get_pcount(void);
+ssize_t atf_get_part(struct storage_partition *part, unsigned int index);
+ssize_t atf_erase_nor(uintptr_t offset, size_t size);
+ssize_t atf_write_nor(uintptr_t offset, const void *buffer, size_t size);
+ssize_t atf_write_mmc(uintptr_t offset, const void *buffer, size_t size);
+ssize_t atf_dram_size(unsigned int node);
+ssize_t atf_node_count(void);
+ssize_t atf_env_count(void);
+ssize_t atf_env_string(size_t index, char *str);
+
+#endif
diff --git a/include/cavium/atf_part.h b/include/cavium/atf_part.h
new file mode 100644
index 0000000000..182f6f4b88
--- /dev/null
+++ b/include/cavium/atf_part.h
@@ -0,0 +1,26 @@
+/**
+ * (C) Copyright 2014, Cavium Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+**/
+
+#ifndef __ATF_PART_H__
+#define __ATF_PART_H__
+
+struct storage_partition {
+	unsigned int type;
+	unsigned int size;
+	unsigned long offset;
+};
+
+enum {
+	PARTITION_NBL1FW_REST = 0,
+	PARTITION_BL2_BL31 = 1,
+	PARTITION_UBOOT = 2,
+	PARTITION_UEFI = 2,
+	PARTITION_KERNEL = 3,
+	PARTITION_DEVICE_TREE = 4,
+	PARTITION_LAST,
+};
+
+#endif
diff --git a/include/cavium/thunderx_svc.h b/include/cavium/thunderx_svc.h
new file mode 100644
index 0000000000..416ce3cfec
--- /dev/null
+++ b/include/cavium/thunderx_svc.h
@@ -0,0 +1,67 @@
+/**
+ * (C) Copyright 2014, Cavium Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+**/
+
+#ifndef __THUNDERX_SVC_H__
+#define __THUNDERX_SVC_H__
+
+/* SMC function IDs for general purpose queries */
+
+#define THUNDERX_SVC_CALL_COUNT		0x4300ff00
+#define THUNDERX_SVC_UID		0x4300ff01
+
+#define THUNDERX_SVC_VERSION		0x4300ff03
+
+#define ARM_STD_SVC_VERSION		0x8400ff03
+
+/* ThunderX Service Calls version numbers */
+#define THUNDERX_VERSION_MAJOR	0x0
+#define THUNDERX_VERSION_MINOR	0x1
+
+#define THUNDERX_MMC_READ		0x43000101
+/* x1 - block address
+ * x2 - size
+ * x3 - buffer address
+ */
+#define THUNDERX_MMC_WRITE		0x43000102
+/* x1 - block address
+ * x2 - size
+ * x3 - buffer address
+ */
+
+#define THUNDERX_NOR_READ		0x43000111
+/* x1 - block address
+ * x2 - size
+ * x3 - buffer address
+ */
+#define THUNDERX_NOR_WRITE		0x43000112
+/* x1 - block address
+ * x2 - size
+ * x3 - buffer address
+ */
+#define THUNDERX_NOR_ERASE		0x43000113
+/* x1 - block address
+ */
+
+#define THUNDERX_PART_COUNT		0x43000201
+#define THUNDERX_GET_PART		0x43000202
+/* x1 - pointer to the buffer
+ * x2 - index
+ */
+
+#define THUNDERX_DRAM_SIZE		0x43000301
+/* x1 - node number
+ */
+
+#define THUNDERX_GTI_SYNC		0x43000401
+
+#define THUNDERX_ENV_COUNT		0x43000501
+#define THUNDERX_ENV_STRING		0x43000502
+/* x1 - index
+ */
+
+#define THUNDERX_NODE_COUNT		0x43000601
+
+#endif /* __THUNDERX_SVC_H__ */
diff --git a/include/configs/thunderx_88xx.h b/include/configs/thunderx_88xx.h
index 9bd26dc7aa..cece4ddbcf 100644
--- a/include/configs/thunderx_88xx.h
+++ b/include/configs/thunderx_88xx.h
@@ -26,6 +26,8 @@
 
 #define CONFIG_SYS_FULL_VA
 
+#define CONFIG_SYS_LOWMEM_BASE		MEM_BASE
+
 #define CONFIG_SYS_MEM_MAP		{{0x000000000000UL, 0x40000000000UL, \
 					  PTL2_MEMTYPE(MT_NORMAL) |	     \
 					  PTL2_BLOCK_NON_SHARE},	     \