u-boot/arch/arm/mach-octeontx/cpu.c
Harald Seiler 35b65dd8ef reset: Remove addr parameter from reset_cpu()
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02 14:03:02 -05:00

77 lines
1.7 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Marvell International Ltd.
*
* https://spdx.org/licenses
*/
#include <common.h>
#include <asm/armv8/mmu.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/board.h>
DECLARE_GLOBAL_DATA_PTR;
#define OTX_MEM_MAP_USED 3
/* 1 for 83xx, +1 is end of list which needs to be empty */
#define OTX_MEM_MAP_MAX (OTX_MEM_MAP_USED + 1 + CONFIG_NR_DRAM_BANKS + 1)
static struct mm_region otx_mem_map[OTX_MEM_MAP_MAX] = {
{
.virt = 0x800000000000UL,
.phys = 0x800000000000UL,
.size = 0x40000000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE
}, {
.virt = 0x840000000000UL,
.phys = 0x840000000000UL,
.size = 0x40000000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE
}, {
.virt = 0x880000000000UL,
.phys = 0x880000000000UL,
.size = 0x40000000000UL,
.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE
}
};
struct mm_region *mem_map = otx_mem_map;
void mem_map_fill(void)
{
int banks = OTX_MEM_MAP_USED;
u32 dram_start = CONFIG_SYS_TEXT_BASE;
if (otx_is_soc(CN83XX)) {
otx_mem_map[banks].virt = 0x8c0000000000UL;
otx_mem_map[banks].phys = 0x8c0000000000UL;
otx_mem_map[banks].size = 0x40000000000UL;
otx_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
PTE_BLOCK_NON_SHARE;
banks = banks + 1;
}
for (int i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
otx_mem_map[banks].virt = dram_start;
otx_mem_map[banks].phys = dram_start;
otx_mem_map[banks].size = gd->ram_size;
otx_mem_map[banks].attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
PTE_BLOCK_NON_SHARE;
banks = banks + 1;
}
}
u64 get_page_table_size(void)
{
return 0x80000;
}
void reset_cpu(void)
{
}