tpm: cr50: Support opening the TPM multiple times

The tpm_auto_start() function is used in tests and assumes that it can
open the TPM even if it is already open and a locality claimed. The cr50
driver does not use the common TPM2 TIS code so lacks a check for the
is_open field of struct tpm_chip and in fact it doesn't use that struct.

Add an equivalent check to cr50_i2c_open().

This fixes tpm_auto_start() on coral.

Series-to: u-boot

Signed-off-by: Simon Glass <sjg@chromium.org>

Kconfig

@@ -551,7 +551,7 @@ config SYS_LOAD_ADDR
 	default 0x12000000 if ARCH_MX6 && !(MX6SL || MX6SLL  || MX6SX || MX6UL || MX6ULL)
 	default 0x80800000 if ARCH_MX7
 	default 0x90000000 if FSL_LSCH2 || FSL_LSCH3
-	default 0 if ARCH_EFI
+	default 0x02000000 if ARCH_EFI
 	default 0x0 if ARCH_SC5XX
 	help
 	  Address in memory to use as the default safe load address.

board/armltd/vexpress64/Kconfig

@@ -28,7 +28,7 @@ choice
 config TARGET_VEXPRESS64_BASE_FVP
 	bool "Support Versatile Express ARMv8a FVP BASE model"
 	select VEXPRESS64_BASE_MODEL
-	imply OF_HAS_PRIOR_STAGE if !BLOBLIST
+	imply OF_HAS_PRIOR_STAGE
 
 config TARGET_VEXPRESS64_BASER_FVP
 	bool "Support Versatile Express ARMv8r64 FVP BASE model"

board/armltd/vexpress64/Makefile

@@ -3,8 +3,5 @@
 # (C) Copyright 2000-2004
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 
-obj-y	:= vexpress64.o
-
-obj-$(CONFIG_OF_HAS_PRIOR_STAGE)	+= lowlevel_init.o
-
+obj-y	:= vexpress64.o lowlevel_init.o
 obj-$(CONFIG_TARGET_VEXPRESS64_JUNO)	+= pcie.o

board/armltd/vexpress64/vexpress64.c

@@ -100,9 +100,7 @@ int dram_init_banksize(void)
  * Push the variable into the .data section so that it
  * does not get cleared later.
  */
-#ifdef CONFIG_OF_HAS_PRIOR_STAGE
 unsigned long __section(".data") prior_stage_fdt_address[2];
-#endif
 
 #ifdef CONFIG_OF_BOARD
 
@@ -153,7 +151,6 @@ static phys_addr_t find_dtb_in_nor_flash(const char *partname)
 }
 #endif
 
-#ifdef CONFIG_OF_HAS_PRIOR_STAGE
 /*
  * Filter for a valid DTB, as TF-A happens to provide a pointer to some
  * data structure using the DTB format, which we cannot use.
@@ -204,7 +201,6 @@ int board_fdt_blob_setup(void **fdtp)
 	return -ENXIO;
 }
 #endif
-#endif
 
 /* Actual reset is done via PSCI. */
 void reset_cpu(void)

board/efi/Kconfig

@@ -17,7 +17,7 @@ config TARGET_EFI_X86_APP32
 	help
 	  This target is used for running U-Boot on top of EFI. In
 	  this case EFI does the early initialisation, and U-Boot
-	  starts once the RAM, video and CPU are fully running.
+	  takes over once the RAM, video and CPU are fully running.
 	  U-Boot is loaded as an application from EFI.
 
 config TARGET_EFI_X86_APP64
@@ -27,7 +27,7 @@ config TARGET_EFI_X86_APP64
 	help
 	  This target is used for running U-Boot on top of EFI in 64-bit mode.
 	  In this case EFI does the early initialisation, and U-Boot
-	  starts once the RAM, video and CPU are fully running.
+	  takes over once the RAM, video and CPU are fully running.
 	  U-Boot is loaded as an application from EFI.
 
 config TARGET_EFI_X86_PAYLOAD
@@ -59,7 +59,7 @@ config TARGET_EFI_ARM_APP64
 	help
 	  This target is used for running U-Boot on top of EFI in 64-bit mode.
 	  In this case EFI does the early initialisation, and U-Boot
-	  starts once the RAM, video and CPU are fully running.
+	  takes over once the RAM, video and CPU are fully running.
 	  U-Boot is loaded as an application from EFI.
 
 endchoice

board/efi/efi-arm_app/MAINTAINERS

@@ -1,3 +1,10 @@
+EFI-ARM_APP32 BOARD
+M:	Simon Glass <sjg@chromium.org>
+S:	Maintained
+F:	board/efi/Kconfig
+F:	board/efi/efi-arm_app/
+F:	configs/efi-arm_app32_defconfig
+
 EFI-ARM_APP64 BOARD
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained

boot/bootm.c

@@ -1185,39 +1185,6 @@ int bootm_run(struct bootm_info *bmi)
 
 int bootz_run(struct bootm_info *bmi)
 {
-	struct bootm_headers *images = bmi->images;
-	ulong zi_start, zi_end;
-	int ret;
-
-	ret = bootm_run_states(bmi, BOOTM_STATE_START);
-	if (ret)
-		return ret;
-
-	images->ep = bmi->addr_img ? hextoul(bmi->addr_img, NULL) :
-		image_load_addr;
-
-	ret = bootz_setup(images->ep, &zi_start, &zi_end);
-	if (ret)
-		return ret;
-
-	lmb_reserve(images->ep, zi_end - zi_start);
-
-	/*
-	 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
-	 * have a header that provide this informaiton.
-	 */
-	if (bootm_find_images(images->ep, bmi->conf_ramdisk, bmi->conf_fdt,
-			      images->ep, zi_end - zi_start))
-		return -EINVAL;
-
-	/*
-	 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
-	 * disable interrupts ourselves
-	 */
-	bootm_disable_interrupts();
-
-	images->os.os = IH_OS_LINUX;
-
 	return boot_run(bmi, "bootz", 0);
 }
 

cmd/bootz.c

@@ -20,6 +20,56 @@ int __weak bootz_setup(ulong image, ulong *start, ulong *end)
 	return -1;
 }
 
+/*
+ * zImage booting support
+ */
+static int bootz_start(struct cmd_tbl *cmdtp, int flag, int argc,
+		       char *const argv[], struct bootm_headers *images)
+{
+	ulong zi_start, zi_end;
+	struct bootm_info bmi;
+	int ret;
+
+	bootm_init(&bmi);
+	if (argc)
+		bmi.addr_img = argv[0];
+	if (argc > 1)
+		bmi.conf_ramdisk = argv[1];
+	if (argc > 2)
+		bmi.conf_fdt = argv[2];
+	/* do not set up argc and argv[] since nothing uses them */
+
+	ret = bootm_run_states(&bmi, BOOTM_STATE_START);
+
+	/* Setup Linux kernel zImage entry point */
+	if (!argc) {
+		images->ep = image_load_addr;
+		debug("*  kernel: default image load address = 0x%08lx\n",
+				image_load_addr);
+	} else {
+		images->ep = hextoul(argv[0], NULL);
+		debug("*  kernel: cmdline image address = 0x%08lx\n",
+			images->ep);
+	}
+
+	ret = bootz_setup(images->ep, &zi_start, &zi_end);
+	if (ret != 0)
+		return 1;
+
+	lmb_reserve(images->ep, zi_end - zi_start);
+
+	/*
+	 * Handle the BOOTM_STATE_FINDOTHER state ourselves as we do not
+	 * have a header that provide this informaiton.
+	 */
+	if (bootm_find_images(image_load_addr, cmd_arg1(argc, argv),
+			      cmd_arg2(argc, argv), images->ep,
+			      zi_end - zi_start))
+		return 1;
+
+	return 0;
+}
+
 int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	struct bootm_info bmi;
@@ -28,6 +78,17 @@ int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 	/* Consume 'bootz' */
 	argc--; argv++;
 
+	if (bootz_start(cmdtp, flag, argc, argv, &images))
+		return 1;
+
+	/*
+	 * We are doing the BOOTM_STATE_LOADOS state ourselves, so must
+	 * disable interrupts ourselves
+	 */
+	bootm_disable_interrupts();
+
+	images.os.os = IH_OS_LINUX;
+
 	bootm_init(&bmi);
 	if (argc)
 		bmi.addr_img = argv[0];
@@ -38,10 +99,8 @@ int do_bootz(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 	bmi.cmd_name = "bootz";
 
 	ret = bootz_run(&bmi);
-	if (ret)
-		return CMD_RET_FAILURE;
 
-	return 0;
+	return ret;
 }
 
 U_BOOT_LONGHELP(bootz,

common/Kconfig

@@ -1055,8 +1055,8 @@ choice
 config BLOBLIST_FIXED
 	bool "Place bloblist at a fixed address in memory"
 	help
-	  Select this to use a fixed memory address for the bloblist. If the
-	  bloblist exists at this address from a previous phase, it is used as is.
+	  Select this to used a fixed memory address for the bloblist. If the
+	  bloblist exists at this address from a previous phase, it used as is.
 	  If not it is created at this address in U-Boot.
 
 config BLOBLIST_ALLOC
@@ -1066,12 +1066,6 @@ config BLOBLIST_ALLOC
 	  specify a fixed address on systems where this is unknown or can
 	  change at runtime.
 
-config BLOBLIST_PASSAGE
-	bool "Use bloblist in-place"
-	help
-	  Use a bloblist in the incoming standard passage. The size is detected
-	  automatically so CONFIG_BLOBLIST_SIZE can be 0.
-
 endchoice
 
 config BLOBLIST_ADDR
@@ -1086,17 +1080,17 @@ config BLOBLIST_ADDR
 
 config BLOBLIST_SIZE
 	hex "Size of bloblist"
-	default 0x0 if BLOBLIST_PASSAGE
 	default 0x400
 	help
 	  Sets the size of the bloblist in bytes. This must include all
 	  overhead (alignment, bloblist header, record header). The bloblist
 	  is set up in the first part of U-Boot to run (TPL, SPL or U-Boot
-	  proper), and this same bloblist is used for subsequent phases.
+	  proper), and this sane bloblist is used for subsequent phases.
 
 config BLOBLIST_SIZE_RELOC
 	hex "Size of bloblist after relocation"
 	default BLOBLIST_SIZE if BLOBLIST_FIXED || BLOBLIST_ALLOC
+	default 0x0 if BLOBLIST_PASSAGE
 	default 0x20000 if (ARM && EFI_LOADER && GENERATE_ACPI_TABLE)
 	help
 	  Sets the size of the bloblist in bytes after relocation. Since U-Boot

common/bloblist.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause
 /*
  * Copyright 2018 Google, Inc
  * Written by Simon Glass <sjg@chromium.org>
@@ -489,9 +489,6 @@ int bloblist_reloc(void *to, uint to_size)
 {
 	struct bloblist_hdr *hdr;
 
-	if (!to_size)
-		return 0;
-
 	if (to_size < gd->bloblist->total_size)
 		return -ENOSPC;
 
@@ -522,6 +519,13 @@ int bloblist_init(void)
 	 * at a fixed address.
 	 */
 	bool from_addr = fixed && !xpl_is_first_phase();
+	/*
+	 * If U-Boot is in the first phase that an arch custom routine should
+	 * install the bloblist passed from previous loader to this fixed
+	 * address.
+	 */
+	bool from_boot_arg = fixed && xpl_is_first_phase();
+
 	if (xpl_prev_phase() == PHASE_TPL && !IS_ENABLED(CONFIG_TPL_BLOBLIST))
 		from_addr = false;
 	if (fixed)
@@ -529,13 +533,7 @@ int bloblist_init(void)
 				      CONFIG_BLOBLIST_ADDR);
 	size = CONFIG_BLOBLIST_SIZE;
 
-
-	/*
-	 * If the current boot stage is the first phase of U-Boot, then an
-	 * architecture-specific routine should be used to handle the bloblist
-	 * passed from the previous boot loader
-	 */
-	if (xpl_is_first_phase() && !IS_ENABLED(CONFIG_BLOBLIST_ALLOC))
+	if (from_boot_arg)
 		ret = xferlist_from_boot_arg(addr, size);
 	else if (from_addr)
 		ret = bloblist_check(addr, size);

configs/vexpress_fvp_bloblist_defconfig

@@ -1,5 +0,0 @@
-#include <configs/vexpress_fvp_defconfig>
-
-CONFIG_BLOBLIST=y
-CONFIG_BLOBLIST_PASSAGE=y
-CONFIG_BLOBLIST_SIZE_RELOC=0x10000

doc/board/armltd/vexpress64.rst

@@ -43,22 +43,6 @@ Juno is an Arm development board with the following features:
 
 More details can be found in the board documentation [3]_.
 
-Bloblist Support
-----------------
-
-The ``vexpress_fvp_bloblist_defconfig`` configures U-Boot to be compiled for
-Vexpress64 with Bloblist as the primary method for information handoff between
-boot stages. U-Boot offers three methods to set up a bloblist: using a
-predefined bloblist at a specified address, dynamically allocating memory for a
-bloblist, or utilizing a standard passage-provided bloblist with automatic size
-detection.
-
-By default, ``vexpress_fvp_bloblist_defconfig`` uses the standard passage method
-(CONFIG_BLOBLIST_PASSAGE) because TF-A provides a Transfer List in non-secure
-memory that U-Boot can utilise. This Bloblist, which is referred to as a Transfer List in
-TF-A, contains all necessary data for the handoff process, including DT and ACPI
-tables.
-
 References
 ----------
 

drivers/tpm/cr50_i2c.c

@@ -737,9 +737,13 @@ static int cr50_i2c_report_state(struct udevice *dev, char *str, int str_max)
 
 static int cr50_i2c_open(struct udevice *dev)
 {
+	struct cr50_priv *priv = dev_get_priv(dev);
 	char buf[80];
 	int ret;
 
+	if (priv->locality != -1)
+		return -EBUSY;
+
 	ret = process_reset(dev);
 	if (ret)
 		return log_msg_ret("reset", ret);

include/bloblist.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
+/* SPDX-License-Identifier: GPL-2.0+ BSD-3-Clause */
 /*
  * This provides a standard way of passing information between boot phases
  * (TPL -> SPL -> U-Boot proper.)
@@ -475,7 +475,7 @@ int bloblist_init(void);
 /**
  * bloblist_maybe_init() - Init the bloblist system if not already done
  *
- * Calls bloblist_init() if the GD_FLG_BLOBLIST_READY flag is not set
+ * Calls bloblist_init() if the GD_FLG_BLOBLIST_READY flag is not et
  *
  * Return: 0 if OK, -ve on error
  */

include/configs/vexpress_aemv8.h

@@ -169,14 +169,12 @@
 		"  if load hostfs - ${kernel_addr_r} ${kernel_name}; then"	\
 		"    setenv fdt_high 0xffffffffffffffff;"		\
 		"    setenv initrd_high 0xffffffffffffffff;"		\
-		"    if test -n load hostfs - ${fdt_addr_r} ${fdtfile}; then"			\
-		"        fdt move $fdtcontroladdr $fdt_addr_r;"			\
-		"    fi;"			\
+		"    load hostfs - ${fdt_addr_r} ${fdtfile};"			\
 		"    load hostfs - ${ramdisk_addr_r} ${ramdisk_name};" \
 		"    fdt addr ${fdt_addr_r};"				\
 		"    fdt resize;"					\
 		"    fdt chosen ${ramdisk_addr_r} ${filesize};"	\
-		"    booti $kernel_addr_r - ${fdt_addr_r};"		\
+		"    booti $kernel_addr_r - $fdt_addr_r;"		\
 		"  fi;"							\
 		"fi\0"
 #define BOOTENV_DEV_NAME_SMH(devtypeu, devtypel, instance) "smh "

include/net-common.h

@@ -4,6 +4,8 @@
 #define __NET_COMMON_H__
 
 #include <asm/cache.h>
+#include <command.h>
+#include <env.h>
 #include <hexdump.h>
 #include <linux/if_ether.h>
 #include <linux/sizes.h>
@@ -11,8 +13,6 @@
 #include <rand.h>
 #include <time.h>
 
-struct cmd_tbl;
-
 #define DEBUG_NET_PKT_TRACE 0	/* Trace all packet data */
 
 /*
@@ -463,7 +463,10 @@ int update_tftp(ulong addr, char *interface, char *devstring);
  *	0 to 255
  * Return: IP address, or 0 if invalid
  */
-struct in_addr env_get_ip(char *var);
+static inline struct in_addr env_get_ip(char *var)
+{
+	return string_to_ip(env_get(var));
+}
 
 int net_init(void);
 

net/net-common.c

@@ -1,5 +1,4 @@
 // SPDX-License-Identifier: GPL-2.0
-#include <env.h>
 #include <net-common.h>
 
 void copy_filename(char *dst, const char *src, int size)
@@ -26,8 +25,3 @@ int wget_request(ulong dst_addr, char *uri, struct wget_http_info *info)
 	wget_info = info ? info : &default_wget_info;
 	return wget_with_dns(dst_addr, uri);
 }
-
-struct in_addr env_get_ip(char *var)
-{
-	return string_to_ip(env_get(var));
-}