493b8de938
This reverts commit f735584514.
These header changes introduce unacceptable errors:
1. The changes alter the width of the initial block comment. That will cause nxstyle failures on most of the files.
2. The third line of the header is an (optional) short description of content of the the file. This change erroneously removes that line.
Automated header file changes can screw up a lot of files, very quickly.
283 lines
10 KiB
C
283 lines
10 KiB
C
/****************************************************************************
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* arch/arm/src/sama5/sama5d3x_memorymap.c
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*
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* Copyright (C) 2013-2015 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include "mmu.h"
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#include "hardware/sam_memorymap.h"
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#include "sam_lcd.h"
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#include "sam_memorymap.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* This table describes how to map a set of 1Mb pages to space the physical
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* address space of the SAMA5.
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*/
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#ifndef CONFIG_ARCH_ROMPGTABLE
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const struct section_mapping_s g_section_mapping[] =
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{
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/* SAMA5 Internal Memories */
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/* If CONFIG_ARCH_LOWVECTORS is defined, then the vectors located at the
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* beginning of the .text region must appear at address at the address
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* specified in the VBAR. There are three ways to accomplish this:
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*
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* 1. By explicitly mapping the beginning of .text region with a page
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* table entry so that the virtual address zero maps to the beginning
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* of the .text region. VBAR == 0x0000:0000.
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*
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* 2. A second way is to map the use the AXI MATRIX remap register to
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* map physical address zero to the beginning of the text region,
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* either internal SRAM or EBI CS 0. Then we can set an identity
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* mapping to map the boot region at 0x0000:0000 to virtual address
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* 0x0000:00000. VBAR == 0x0000:0000.
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*
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* This method is used when booting from ISRAM or NOR FLASH. In
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* that case, vectors must lie at the beginning of NOFR FLASH.
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*
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* 3. Set the Cortex-A5 VBAR register so that the vector table address
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* is moved to a location other than 0x0000:0000.
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*
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* This is the method used when booting from SDRAM.
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*
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* - When executing from NOR FLASH, the first level bootloader is supposed
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* to provide the AXI MATRIX mapping for us at boot time base on the state
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* of the BMS pin. However, I have found that in the test environments
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* that I use, I cannot always be assured of that physical address mapping.
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*
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* So we do both here. If we are executing from NOR FLASH, then we provide
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* the MMU to map the physical address of FLASH to address 0x0000:0000;
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*
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* - If we are executing out of ISRAM, then the SAMA5 primary bootloader
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* probably copied us into ISRAM and set the AXI REMAP bit for us.
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*
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* - If we are executing from external SDRAM, then a secondary bootloader must
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* have loaded us into SDRAM. In this case, simply set the VBAR register
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* to the address of the vector table (not necessary at the beginning
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* or SDRAM).
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*/
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#if defined(CONFIG_ARCH_LOWVECTORS) && !defined(CONFIG_SAMA5_BOOT_ISRAM) && \
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!defined(CONFIG_SAMA5_BOOT_SDRAM)
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{ CONFIG_FLASH_START, 0x00000000,
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MMU_ROMFLAGS, 1
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},
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#else
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{ SAM_BOOTMEM_PSECTION, SAM_BOOTMEM_VSECTION,
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SAM_BOOTMEM_MMUFLAGS, SAM_BOOTMEM_NSECTIONS
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},
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#endif
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{ SAM_ROM_PSECTION, SAM_ROM_VSECTION,
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SAM_ROM_MMUFLAGS, SAM_ROM_NSECTIONS
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},
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{ SAM_NFCSRAM_PSECTION, SAM_NFCSRAM_VSECTION,
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SAM_NFCSRAM_MMUFLAGS, SAM_NFCSRAM_NSECTIONS
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},
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#ifndef CONFIG_PAGING /* Internal SRAM is already fully mapped */
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{ SAM_ISRAM_PSECTION, SAM_ISRAM_VSECTION,
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SAM_ISRAM_MMUFLAGS, SAM_ISRAM_NSECTIONS
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},
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#endif
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{ SAM_SMD_PSECTION, SAM_SMD_VSECTION,
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SAM_SMD_MMUFLAGS, SAM_SMD_NSECTIONS
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},
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{ SAM_UDPHSRAM_PSECTION, SAM_UDPHSRAM_VSECTION,
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SAM_UDPHSRAM_MMUFLAGS, SAM_UDPHSRAM_NSECTIONS
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},
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{ SAM_UHPOHCI_PSECTION, SAM_UHPOHCI_VSECTION,
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SAM_UHPOHCI_MMUFLAGS, SAM_UHPOHCI_NSECTIONS
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},
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{ SAM_UHPEHCI_PSECTION, SAM_UHPEHCI_VSECTION,
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SAM_UHPEHCI_MMUFLAGS, SAM_UHPEHCI_NSECTIONS
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},
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{ SAM_AXIMX_PSECTION, SAM_AXIMX_VSECTION,
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SAM_AXIMX_MMUFLAGS, SAM_AXIMX_NSECTIONS
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},
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{ SAM_DAP_PSECTION, SAM_DAP_VSECTION,
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SAM_DAP_MMUFLAGS, SAM_DAP_NSECTIONS
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},
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/* SAMA5 CS0 External Memories */
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#ifdef CONFIG_SAMA5_EBICS0
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{ SAM_EBICS0_PSECTION, SAM_EBICS0_VSECTION,
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SAM_EBICS0_MMUFLAGS, SAM_EBICS0_NSECTIONS
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},
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#endif
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/* SAMA5 External SDRAM Memory. The SDRAM is not usable until it has been
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* initialized. If we are running out of SDRAM now, we can assume that some
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* second level boot loader has properly configured SRAM for us. In that
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* case, we set the MMU flags for the final, fully cache-able state.
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*
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* Also, in this case, the mapping for the SDRAM was done in arm_head.S and
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* need not be repeated here.
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*
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* If we are running from ISRAM or NOR flash, then we will need to configure
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* the SDRAM ourselves. In this case, we set the MMU flags to the strongly
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* ordered, non-cacheable state. We need this direct access to SDRAM in
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* order to configure it. Once SDRAM has been initialized, it will be re-
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* configured in its final state.
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*/
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#ifdef NEED_SDRAM_MAPPING
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{ SAM_DDRCS_PSECTION, SAM_DDRCS_VSECTION,
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MMU_STRONGLY_ORDERED, SAM_DDRCS_NSECTIONS
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},
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#endif
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/* SAMA5 CS1-3 External Memories */
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#ifdef CONFIG_SAMA5_EBICS1
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{ SAM_EBICS1_PSECTION, SAM_EBICS1_VSECTION,
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SAM_EBICS1_MMUFLAGS, SAM_EBICS1_NSECTIONS
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},
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#endif
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#ifdef CONFIG_SAMA5_EBICS2
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{ SAM_EBICS2_PSECTION, SAM_EBICS2_VSECTION,
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SAM_EBICS2_MMUFLAGS, SAM_EBICS2_NSECTIONS
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},
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#endif
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#ifdef CONFIG_SAMA5_EBICS3
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{ SAM_EBICS3_PSECTION, SAM_EBICS3_VSECTION,
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SAM_EBICS3_MMUFLAGS, SAM_EBICS3_NSECTIONS
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},
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#endif
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#ifdef CONFIG_SAMA5_HAVE_NAND
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{ SAM_NFCCR_PSECTION, SAM_NFCCR_VSECTION,
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SAM_NFCCR_MMUFLAGS, SAM_NFCCR_NSECTIONS
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},
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#endif
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/* SAMA5 Internal Peripherals
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*
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* Naming of peripheral sections differs between the SAMA5D3 and SAMA5D4.
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* There is nothing called SYSC in the SAMA5D4 memory map. The third
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* peripheral section is un-named in the SAMA5D4 memory map, but I have
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* chosen the name PERIPHC for this usage.
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*/
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{ SAM_PERIPHA_PSECTION, SAM_PERIPHA_VSECTION,
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SAM_PERIPHA_MMUFLAGS, SAM_PERIPHA_NSECTIONS
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},
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{ SAM_PERIPHB_PSECTION, SAM_PERIPHB_VSECTION,
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SAM_PERIPHB_MMUFLAGS, SAM_PERIPHB_NSECTIONS
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},
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{ SAM_SYSC_PSECTION, SAM_SYSC_VSECTION,
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SAM_SYSC_MMUFLAGS, SAM_SYSC_NSECTIONS
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},
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/* LCDC Framebuffer. This entry reprograms a part of one of the above
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* regions, making it non-cacheable and non-buffereable.
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*
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* If SDRAM will be reconfigured, then we will defer setup of the framebuffer
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* until after the SDRAM remapping (since the framebuffer problem resides) in
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* SDRAM.
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*/
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#if defined(CONFIG_SAMA5_LCDC) && !defined(NEED_SDRAM_REMAPPING)
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{ CONFIG_SAMA5_LCDC_FB_PBASE, CONFIG_SAMA5_LCDC_FB_VBASE,
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MMU_IOFLAGS, SAMA5_LCDC_FBNSECTIONS
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},
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#endif
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};
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/* The number of entries in the mapping table */
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#define NMAPPINGS \
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(sizeof(g_section_mapping) / sizeof(struct section_mapping_s))
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const size_t g_num_mappings = NMAPPINGS;
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#endif /* CONFIG_ARCH_ROMPGTABLE */
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/* SAMA5 External SDRAM Memory. Final configuration. The SDRAM was
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* configured in a temporary state to support low-level ininitialization.
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* After the SDRAM has been fully initialized, this structure is used to
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* set the SDRM in its final, fully cache-able state.
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*/
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#ifdef NEED_SDRAM_REMAPPING
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const struct section_mapping_s g_operational_mapping[] =
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{
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/* This entry reprograms the SDRAM entry, making it cacheable and
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* bufferable.
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*/
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{ SAM_DDRCS_PSECTION, SAM_DDRCS_VSECTION,
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SAM_DDRCS_MMUFLAGS, SAM_DDRCS_NSECTIONS
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},
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/* LCDC Framebuffer. This entry reprograms a part of one of the above
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* regions, making it non-cacheable and non-buffereable.
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*/
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#ifdef CONFIG_SAMA5_LCDC
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{ CONFIG_SAMA5_LCDC_FB_PBASE, CONFIG_SAMA5_LCDC_FB_VBASE,
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MMU_IOFLAGS, SAMA5_LCDC_FBNSECTIONS
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},
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#endif
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};
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/* The number of entries in the operational mapping table */
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#define NREMAPPINGS \
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(sizeof(g_operational_mapping) / sizeof(struct section_mapping_s))
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const size_t g_num_opmappings = NREMAPPINGS;
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#endif /* NEED_SDRAM_REMAPPING */
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