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Diffstat (limited to 'plat/juno/bl32_plat_setup.c')
| -rw-r--r-- | plat/juno/bl32_plat_setup.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/plat/juno/bl32_plat_setup.c b/plat/juno/bl32_plat_setup.c new file mode 100644 index 0000000..fee4a7d --- /dev/null +++ b/plat/juno/bl32_plat_setup.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2014, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <arch_helpers.h> +#include <bl_common.h> +#include <bl32.h> +#include <console.h> +#include <platform.h> + +/******************************************************************************* + * Declarations of linker defined symbols which will help us find the layout + * of trusted SRAM + ******************************************************************************/ +extern unsigned long __RO_START__; +extern unsigned long __RO_END__; + +extern unsigned long __COHERENT_RAM_START__; +extern unsigned long __COHERENT_RAM_END__; + +/* + * The next 2 constants identify the extents of the code & RO data region. + * These addresses are used by the MMU setup code and therefore they must be + * page-aligned. It is the responsibility of the linker script to ensure that + * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses. + */ +#define BL32_RO_BASE (unsigned long)(&__RO_START__) +#define BL32_RO_LIMIT (unsigned long)(&__RO_END__) + +/* + * The next 2 constants identify the extents of the coherent memory region. + * These addresses are used by the MMU setup code and therefore they must be + * page-aligned. It is the responsibility of the linker script to ensure that + * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to + * page-aligned addresses. + */ +#define BL32_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) +#define BL32_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) + +/* Data structure which holds the extents of the trusted SRAM for BL3-2 */ +static meminfo_t bl32_tzdram_layout +__attribute__ ((aligned(PLATFORM_CACHE_LINE_SIZE), + section("tzfw_coherent_mem"))); + +meminfo_t *bl32_plat_sec_mem_layout(void) +{ + return &bl32_tzdram_layout; +} + +/******************************************************************************* + * BL1 has passed the extents of the trusted SRAM that's at BL3-2's disposal. + * Initialize the BL3-2 data structure with the memory extends and initialize + * the UART + ******************************************************************************/ +void bl32_early_platform_setup(meminfo_t *mem_layout, void *data) +{ + /* + * Initialize a different console than already in use to display + * messages from TSP + */ + console_init(PL011_UART1_BASE); + + /* Setup the BL3-2 memory layout */ + bl32_tzdram_layout.total_base = mem_layout->total_base; + bl32_tzdram_layout.total_size = mem_layout->total_size; + bl32_tzdram_layout.free_base = mem_layout->free_base; + bl32_tzdram_layout.free_size = mem_layout->free_size; + bl32_tzdram_layout.attr = mem_layout->attr; + bl32_tzdram_layout.next = 0; +} + +/******************************************************************************* + * Perform platform specific setup placeholder + ******************************************************************************/ +void bl32_platform_setup(void) +{ +} + +/******************************************************************************* + * Perform the very early platform specific architectural setup here. At the + * moment this only intializes the MMU + ******************************************************************************/ +void bl32_plat_arch_setup(void) +{ + configure_mmu(&bl32_tzdram_layout, + BL32_RO_BASE, + BL32_RO_LIMIT, + BL32_COHERENT_RAM_BASE, + BL32_COHERENT_RAM_LIMIT); +} |