Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 231 insertions, 0 deletions

diff --git a/include/common/bl_common.ld.h b/include/common/bl_common.ld.h
new file mode 100644
index 0000000..080e331
--- /dev/null
+++ b/include/common/bl_common.ld.h
@@ -0,0 +1,231 @@
+/*
+ * Copyright (c) 2020-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef BL_COMMON_LD_H
+#define BL_COMMON_LD_H
+
+#include <platform_def.h>
+
+#ifdef __aarch64__
+#define STRUCT_ALIGN	8
+#define BSS_ALIGN	16
+#else
+#define STRUCT_ALIGN	4
+#define BSS_ALIGN	8
+#endif
+
+#ifndef DATA_ALIGN
+#define DATA_ALIGN	1
+#endif
+
+#define CPU_OPS						\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__CPU_OPS_START__ = .;				\
+	KEEP(*(cpu_ops))				\
+	__CPU_OPS_END__ = .;
+
+#define PARSER_LIB_DESCS				\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__PARSER_LIB_DESCS_START__ = .;			\
+	KEEP(*(.img_parser_lib_descs))			\
+	__PARSER_LIB_DESCS_END__ = .;
+
+#define RT_SVC_DESCS					\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__RT_SVC_DESCS_START__ = .;			\
+	KEEP(*(rt_svc_descs))				\
+	__RT_SVC_DESCS_END__ = .;
+
+#if SPMC_AT_EL3
+#define EL3_LP_DESCS					\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__EL3_LP_DESCS_START__ = .;			\
+	KEEP(*(el3_lp_descs))				\
+	__EL3_LP_DESCS_END__ = .;
+#else
+#define EL3_LP_DESCS
+#endif
+
+#define PMF_SVC_DESCS					\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__PMF_SVC_DESCS_START__ = .;			\
+	KEEP(*(pmf_svc_descs))				\
+	__PMF_SVC_DESCS_END__ = .;
+
+#define FCONF_POPULATOR					\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__FCONF_POPULATOR_START__ = .;			\
+	KEEP(*(.fconf_populator))			\
+	__FCONF_POPULATOR_END__ = .;
+
+/*
+ * Keep the .got section in the RO section as it is patched prior to enabling
+ * the MMU and having the .got in RO is better for security. GOT is a table of
+ * addresses so ensure pointer size alignment.
+ */
+#define GOT						\
+	. = ALIGN(STRUCT_ALIGN);			\
+	__GOT_START__ = .;				\
+	*(.got)						\
+	__GOT_END__ = .;
+
+/*
+ * The base xlat table
+ *
+ * It is put into the rodata section if PLAT_RO_XLAT_TABLES=1,
+ * or into the bss section otherwise.
+ */
+#define BASE_XLAT_TABLE					\
+	. = ALIGN(16);					\
+	__BASE_XLAT_TABLE_START__ = .;			\
+	*(base_xlat_table)				\
+	__BASE_XLAT_TABLE_END__ = .;
+
+#if PLAT_RO_XLAT_TABLES
+#define BASE_XLAT_TABLE_RO		BASE_XLAT_TABLE
+#define BASE_XLAT_TABLE_BSS
+#else
+#define BASE_XLAT_TABLE_RO
+#define BASE_XLAT_TABLE_BSS		BASE_XLAT_TABLE
+#endif
+
+#define RODATA_COMMON					\
+	RT_SVC_DESCS					\
+	FCONF_POPULATOR					\
+	PMF_SVC_DESCS					\
+	PARSER_LIB_DESCS				\
+	CPU_OPS						\
+	GOT						\
+	BASE_XLAT_TABLE_RO				\
+	EL3_LP_DESCS
+
+/*
+ * .data must be placed at a lower address than the stacks if the stack
+ * protector is enabled. Alternatively, the .data.stack_protector_canary
+ * section can be placed independently of the main .data section.
+ */
+#define DATA_SECTION					\
+	.data . : ALIGN(DATA_ALIGN) {			\
+		__DATA_START__ = .;			\
+		*(SORT_BY_ALIGNMENT(.data*))		\
+		__DATA_END__ = .;			\
+	}
+
+/*
+ * .rela.dyn needs to come after .data for the read-elf utility to parse
+ * this section correctly.
+ */
+#if __aarch64__
+#define RELA_DYN_NAME		.rela.dyn
+#define RELOC_SECTIONS_PATTERN	*(.rela*)
+#else
+#define RELA_DYN_NAME		.rel.dyn
+#define RELOC_SECTIONS_PATTERN	*(.rel*)
+#endif
+
+#define RELA_SECTION					\
+	RELA_DYN_NAME : ALIGN(STRUCT_ALIGN) {		\
+		__RELA_START__ = .;			\
+		RELOC_SECTIONS_PATTERN			\
+		__RELA_END__ = .;			\
+	}
+
+#if !(defined(IMAGE_BL31) && RECLAIM_INIT_CODE)
+#define STACK_SECTION					\
+	stacks (NOLOAD) : {				\
+		__STACKS_START__ = .;			\
+		*(tzfw_normal_stacks)			\
+		__STACKS_END__ = .;			\
+	}
+#endif
+
+/*
+ * If BL doesn't use any bakery lock then __PERCPU_BAKERY_LOCK_SIZE__
+ * will be zero. For this reason, the only two valid values for
+ * __PERCPU_BAKERY_LOCK_SIZE__ are 0 or the platform defined value
+ * PLAT_PERCPU_BAKERY_LOCK_SIZE.
+ */
+#ifdef PLAT_PERCPU_BAKERY_LOCK_SIZE
+#define BAKERY_LOCK_SIZE_CHECK				\
+	ASSERT((__PERCPU_BAKERY_LOCK_SIZE__ == 0) ||	\
+	       (__PERCPU_BAKERY_LOCK_SIZE__ == PLAT_PERCPU_BAKERY_LOCK_SIZE), \
+	       "PLAT_PERCPU_BAKERY_LOCK_SIZE does not match bakery lock requirements");
+#else
+#define BAKERY_LOCK_SIZE_CHECK
+#endif
+
+/*
+ * Bakery locks are stored in normal .bss memory
+ *
+ * Each lock's data is spread across multiple cache lines, one per CPU,
+ * but multiple locks can share the same cache line.
+ * The compiler will allocate enough memory for one CPU's bakery locks,
+ * the remaining cache lines are allocated by the linker script
+ */
+#if !USE_COHERENT_MEM
+#define BAKERY_LOCK_NORMAL				\
+	. = ALIGN(CACHE_WRITEBACK_GRANULE);		\
+	__BAKERY_LOCK_START__ = .;			\
+	__PERCPU_BAKERY_LOCK_START__ = .;		\
+	*(bakery_lock)					\
+	. = ALIGN(CACHE_WRITEBACK_GRANULE);		\
+	__PERCPU_BAKERY_LOCK_END__ = .;			\
+	__PERCPU_BAKERY_LOCK_SIZE__ = ABSOLUTE(__PERCPU_BAKERY_LOCK_END__ - __PERCPU_BAKERY_LOCK_START__); \
+	. = . + (__PERCPU_BAKERY_LOCK_SIZE__ * (PLATFORM_CORE_COUNT - 1)); \
+	__BAKERY_LOCK_END__ = .;			\
+	BAKERY_LOCK_SIZE_CHECK
+#else
+#define BAKERY_LOCK_NORMAL
+#endif
+
+/*
+ * Time-stamps are stored in normal .bss memory
+ *
+ * The compiler will allocate enough memory for one CPU's time-stamps,
+ * the remaining memory for other CPUs is allocated by the
+ * linker script
+ */
+#define PMF_TIMESTAMP					\
+	. = ALIGN(CACHE_WRITEBACK_GRANULE);		\
+	__PMF_TIMESTAMP_START__ = .;			\
+	KEEP(*(pmf_timestamp_array))			\
+	. = ALIGN(CACHE_WRITEBACK_GRANULE);		\
+	__PMF_PERCPU_TIMESTAMP_END__ = .;		\
+	__PERCPU_TIMESTAMP_SIZE__ = ABSOLUTE(. - __PMF_TIMESTAMP_START__); \
+	. = . + (__PERCPU_TIMESTAMP_SIZE__ * (PLATFORM_CORE_COUNT - 1)); \
+	__PMF_TIMESTAMP_END__ = .;
+
+
+/*
+ * The .bss section gets initialised to 0 at runtime.
+ * Its base address has bigger alignment for better performance of the
+ * zero-initialization code.
+ */
+#define BSS_SECTION					\
+	.bss (NOLOAD) : ALIGN(BSS_ALIGN) {		\
+		__BSS_START__ = .;			\
+		*(SORT_BY_ALIGNMENT(.bss*))		\
+		*(COMMON)				\
+		BAKERY_LOCK_NORMAL			\
+		PMF_TIMESTAMP				\
+		BASE_XLAT_TABLE_BSS			\
+		__BSS_END__ = .;			\
+	}
+
+/*
+ * The xlat_table section is for full, aligned page tables (4K).
+ * Removing them from .bss avoids forcing 4K alignment on
+ * the .bss section. The tables are initialized to zero by the translation
+ * tables library.
+ */
+#define XLAT_TABLE_SECTION				\
+	xlat_table (NOLOAD) : {				\
+		__XLAT_TABLE_START__ = .;		\
+		*(xlat_table)				\
+		__XLAT_TABLE_END__ = .;			\
+	}
+
+#endif /* BL_COMMON_LD_H */