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Diffstat (limited to '')
| -rw-r--r-- | plat/nvidia/tegra/scat/bl31.scat | 284 |
1 files changed, 284 insertions, 0 deletions
diff --git a/plat/nvidia/tegra/scat/bl31.scat b/plat/nvidia/tegra/scat/bl31.scat new file mode 100644 index 0000000..2d6d2b3 --- /dev/null +++ b/plat/nvidia/tegra/scat/bl31.scat @@ -0,0 +1,284 @@ +#! armclang -E -x c + +/* + * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <platform_def.h> + +#define PAGE_SIZE (1024 * 4) + +LR_START BL31_BASE +{ + __BL31_START__ +0 FIXED EMPTY 0 + { + /* placeholder */ + } + + /* BL31_BASE address must be aligned on a page boundary. */ + ScatterAssert((ImageBase(__BL31_START__) AND 0xFFF) == 0) +} + +LR_TEXT BL31_BASE +{ + __TEXT__ +0 FIXED + { + *(:gdef:bl31_entrypoint, +FIRST) + *(.text*) + *(.vectors) + .ANY1(+RO-CODE) + } + + __TEXT_EPILOGUE__ AlignExpr(+0, PAGE_SIZE) FIXED EMPTY 0 + { + /* section delimiter */ + } +} + +LR_RO_DATA +0 +{ + __RODATA__ AlignExpr(ImageLimit(LR_TEXT), 0) FIXED + { + *(.rodata*) + .ANY2(+RO-DATA) + } + + /* Ensure 8-byte alignment for descriptors and ensure inclusion */ + __RT_SVC_DESCS__ AlignExpr(ImageLimit(__RODATA__), 8) FIXED + { + *(rt_svc_descs) + } + +#if ENABLE_PMF + /* Ensure 8-byte alignment for descriptors and ensure inclusion */ + __PMF_SVC_DESCS__ AlignExpr(ImageLimit(__RT_SVC_DESCS__), 8) FIXED + { + *(pmf_svc_descs) + } +#endif /* ENABLE_PMF */ + + /* + * Ensure 8-byte alignment for cpu_ops so that its fields are also + * aligned. + */ + __CPU_OPS__ AlignExpr(+0, 8) FIXED + { + *(cpu_ops) + } + + /* + * 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 8-byte alignment. + */ + __GOT__ AlignExpr(ImageLimit(__CPU_OPS__), 8) FIXED + { + *(.got) + } + + /* Place pubsub sections for events */ + __PUBSUB_EVENTS__ AlignExpr(+0, 8) EMPTY 0 + { + /* placeholder */ + } + +#include <lib/el3_runtime/pubsub_events.h> + + __RODATA_EPILOGUE__ AlignExpr(+0, PAGE_SIZE) FIXED EMPTY 0 + { + /* section delimiter */ + } +} + + /* cpu_ops must always be defined */ + ScatterAssert(ImageLength(__CPU_OPS__) > 0) + +#if SPM_MM +LR_SPM +0 +{ + /* + * Exception vectors of the SPM shim layer. They must be aligned to a 2K + * address, but we need to place them in a separate page so that we can set + * individual permissions to them, so the actual alignment needed is 4K. + * + * There's no need to include this into the RO section of BL31 because it + * doesn't need to be accessed by BL31. + */ + __SPM_SHIM_EXCEPTIONS__ AlignExpr(ImageLimit(LR_RO_DATA), PAGE_SIZE) FIXED + { + *(.spm_shim_exceptions) + } + + __SPM_SHIM_EXCEPTIONS_EPILOGUE__ AlignExpr(ImageLimit(__SPM_SHIM_EXCEPTIONS__), PAGE_SIZE) FIXED + { + /* placeholder */ + } +} +#endif + +LR_RW_DATA +0 +{ + __DATA__ AlignExpr(+0, 16) FIXED + { + *(.data*) + *(.constdata) + *(locale$$data) + } +} + +LR_RELA +0 +{ + /* + * .rela.dyn needs to come after .data for the read-elf utility to parse + * this section correctly. Ensure 8-byte alignment so that the fields of + * RELA data structure are aligned. + */ + __RELA__ AlignExpr(ImageLimit(LR_RW_DATA), 8) FIXED + { + *(.rela.dyn) + } +} + +#ifdef BL31_PROGBITS_LIMIT + /* BL31 progbits has exceeded its limit. */ + ScatterAssert(ImageLimit(LR_RELA) <= BL31_PROGBITS_LIMIT) +#endif + +LR_STACKS +0 +{ + __STACKS__ AlignExpr(+0, 64) FIXED + { + *(tzfw_normal_stacks) + } +} + +#define __BAKERY_LOCK_SIZE__ (ImageLimit(__BAKERY_LOCKS_EPILOGUE__) - \ + ImageBase(__BAKERY_LOCKS__)) +#define BAKERY_LOCK_SIZE (__BAKERY_LOCK_SIZE__ * (PLATFORM_CORE_COUNT - 1)) +#define __PMF_TIMESTAMP_SIZE__ (ImageLimit(__PMF_TIMESTAMP__) - \ + ImageBase(__PMF_TIMESTAMP__)) +#define PER_CPU_TIMESTAMP_SIZE (__PMF_TIMESTAMP_SIZE__ * (PLATFORM_CORE_COUNT - 1)) + +LR_BSS +0 +{ + __BSS__ AlignExpr(ImageLimit(LR_STACKS), 256) FIXED + { + *(.bss*) + *(COMDAT) + } + +#if !USE_COHERENT_MEM + /* + * 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 + */ + __BAKERY_LOCKS__ AlignExpr(ImageLimit(__BSS__), CACHE_WRITEBACK_GRANULE) FIXED + { + *(bakery_lock) + } + + __BAKERY_LOCKS_EPILOGUE__ AlignExpr(ImageLimit(__BAKERY_LOCKS__), CACHE_WRITEBACK_GRANULE) FIXED EMPTY 0 + { + /* section delimiter */ + } + + __PER_CPU_BAKERY_LOCKS__ ImageLimit(__BAKERY_LOCKS_EPILOGUE__) FIXED FILL 0 BAKERY_LOCK_SIZE + { + /* padded memory section to store per cpu bakery locks */ + } + +#ifdef PLAT_PERCPU_BAKERY_LOCK_SIZE + /* PLAT_PERCPU_BAKERY_LOCK_SIZE does not match bakery lock requirements */ + ScatterAssert(__PER_CPU_BAKERY_LOCK_SIZE__ == PLAT_PERCPU_BAKERY_LOCK_SIZE) +#endif +#endif + +#if ENABLE_PMF + /* + * 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 CPU's is allocated by the + * linker script + */ + __PMF_TIMESTAMP__ AlignExpr(+0, CACHE_WRITEBACK_GRANULE) FIXED EMPTY CACHE_WRITEBACK_GRANULE + { + /* store timestamps in this carved out memory */ + } + + __PMF_TIMESTAMP_EPILOGUE__ AlignExpr(ImageLimit(__PMF_TIMESTAMP__), CACHE_WRITEBACK_GRANULE) FIXED EMPTY 0 + { + /* + * placeholder to make __PMF_TIMESTAMP_START__ end on a + * CACHE_WRITEBACK_GRANULE boundary + */ + } + + __PER_CPU_TIMESTAMPS__ +0 FIXED FILL 0 PER_CPU_TIMESTAMP_SIZE + { + /* padded memory section to store per cpu timestamps */ + } +#endif /* ENABLE_PMF */ +} + +LR_XLAT_TABLE +0 +{ + xlat_table +0 FIXED + { + *(xlat_table) + } +} + +#if USE_COHERENT_MEM +LR_COHERENT_RAM +0 +{ + /* + * The base address of the coherent memory section must be page-aligned (4K) + * to guarantee that the coherent data are stored on their own pages and + * are not mixed with normal data. This is required to set up the correct + * memory attributes for the coherent data page tables. + */ + __COHERENT_RAM__ AlignExpr(+0, PAGE_SIZE) FIXED + { + /* + * Bakery locks are stored in coherent memory + * + * Each lock's data is contiguous and fully allocated by the compiler + */ + *(bakery_lock) + *(tzfw_coherent_mem) + } + + __COHERENT_RAM_EPILOGUE_UNALIGNED__ +0 FIXED EMPTY 0 + { + /* section delimiter */ + } + + /* + * Memory page(s) mapped to this section will be marked + * as device memory. No other unexpected data must creep in. + * Ensure the rest of the current memory page is unused. + */ + __COHERENT_RAM_EPILOGUE__ AlignExpr(ImageLimit(__COHERENT_RAM_START__), PAGE_SIZE) FIXED EMPTY 0 + { + /* section delimiter */ + } +} +#endif + +LR_END +0 +{ + __BL31_END__ +0 FIXED EMPTY 0 + { + /* placeholder */ + } + + /* BL31 image has exceeded its limit. */ + ScatterAssert(ImageLimit(__BL31_END__) <= BL31_LIMIT) +} |