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09d40e0e08
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a2 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
136 lines
4.3 KiB
C
136 lines
4.3 KiB
C
/*
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* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <string.h>
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#include <platform_def.h>
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#include <arch_helpers.h>
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#include <common/debug.h>
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#include <drivers/console.h>
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#include <drivers/delay_timer.h>
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#include <lib/mmio.h>
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#include <plat_private.h>
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#include <soc.h>
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#include "ddr_parameter.h"
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/*
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* The miniloader delivers the parameters about ddr usage info from address
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* 0x02000000 and the data format is defined as below figure. It tells ATF the
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* areas of ddr that are used by platform, we treat them as non-secure regions
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* by default. Then we should parse the other part regions and configurate them
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* as secure regions to avoid illegal access.
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*
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* [ddr usage info data format]
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* 0x02000000
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* -----------------------------------------------------------------------------
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* | <name> | <size> | <description> |
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* -----------------------------------------------------------------------------
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* | count | 4byte | the array numbers of the |
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* | | | 'addr_array' and 'size_array' |
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* -----------------------------------------------------------------------------
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* | reserved | 4byte | just for 'addr_array' 8byte aligned |
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* -----------------------------------------------------------------------------
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* | addr_array[count] | per 8byte | memory region base address |
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* -----------------------------------------------------------------------------
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* | size_array[count] | per 8byte | memory region size (byte) |
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* -----------------------------------------------------------------------------
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*/
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/*
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* function: read parameters info(ns-regions) and try to parse s-regions info
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*
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* @addr: head address to the ddr usage struct from miniloader
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* @max_mb: the max ddr capacity(MB) that the platform support
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*/
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struct param_ddr_usage ddr_region_usage_parse(uint64_t addr, uint64_t max_mb)
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{
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uint64_t base, top;
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uint32_t i, addr_offset, size_offset;
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struct param_ddr_usage p;
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memset(&p, 0, sizeof(p));
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/* read how many blocks of ns-regions, read from offset: 0x0 */
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p.ns_nr = mmio_read_32(addr + REGION_NR_OFFSET);
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if ((p.ns_nr > DDR_REGION_NR_MAX) || (p.ns_nr == 0)) {
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ERROR("over or zero region, nr=%d, max=%d\n",
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p.ns_nr, DDR_REGION_NR_MAX);
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return p;
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}
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/* whole ddr regions boundary, it will be used when parse s-regions */
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p.boundary = max_mb;
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/* calculate ns-region base addr and size offset */
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addr_offset = REGION_ADDR_OFFSET;
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size_offset = REGION_ADDR_OFFSET + p.ns_nr * REGION_DATA_PER_BYTES;
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/* read all ns-regions base and top address */
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for (i = 0; i < p.ns_nr; i++) {
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base = mmio_read_64(addr + addr_offset);
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top = base + mmio_read_64(addr + size_offset);
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/*
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* translate byte to MB and store info,
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* Miniloader will promise every ns-region is MB aligned.
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*/
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p.ns_base[i] = RG_SIZE_MB(base);
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p.ns_top[i] = RG_SIZE_MB(top);
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addr_offset += REGION_DATA_PER_BYTES;
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size_offset += REGION_DATA_PER_BYTES;
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}
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/*
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* a s-region's base starts from previous ns-region's top, and a
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* s-region's top ends with next ns-region's base. maybe like this:
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*
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* case1: ns-regison start from 0MB
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* -----------------------------------------------
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* | ns0 | S0 | ns1 | S1 | ns2 |
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* 0----------------------------------------------- max_mb
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*
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*
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* case2: ns-regison not start from 0MB
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* -----------------------------------------------
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* | S0 | ns0 | ns1 | ns2 | S1 |
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* 0----------------------------------------------- max_mb
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*/
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/* like above case2 figure, ns-region is not start from 0MB */
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if (p.ns_base[0] != 0) {
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p.s_base[p.s_nr] = 0;
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p.s_top[p.s_nr] = p.ns_base[0];
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p.s_nr++;
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}
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/*
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* notice: if ns-regions not start from 0MB, p.s_nr = 1 now, otherwise 0
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*/
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for (i = 0; i < p.ns_nr; i++) {
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/*
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* if current ns-regions top covers boundary,
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* that means s-regions are all parsed yet, so finsh.
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*/
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if (p.ns_top[i] == p.boundary)
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goto out;
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/* s-region's base starts from previous ns-region's top */
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p.s_base[p.s_nr] = p.ns_top[i];
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/* s-region's top ends with next ns-region's base */
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if (i + 1 < p.ns_nr)
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p.s_top[p.s_nr] = p.ns_base[i + 1];
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else
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p.s_top[p.s_nr] = p.boundary;
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p.s_nr++;
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}
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out:
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return p;
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}
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