Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-06 05:04:26 +00:00
Code Issues Projects Releases Packages Wiki Activity
u-boot/arch/arc/lib/cpu.c

69 lines
1.3 KiB
C
Raw Normal View History

SPDX: Convert all of our single license tags to Linux Kernel style When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-06 21:58:06 +00:00
// SPDX-License-Identifier: GPL-2.0+
arc: add cpu files Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de>
2014-02-04 08:56:14 +00:00
/*
ARC: Implement print_cpuinfo() Once we enable DISPLAY_CPUINFO for ARC we'll see ARC core family and version printed on boot. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-02 08:42:23 +00:00
* Copyright (C) 2013-2014, 2018 Synopsys, Inc. All rights reserved.
arc: add cpu files Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de>
2014-02-04 08:56:14 +00:00
*/
#include <common.h>
#include <asm/arcregs.h>
#include <asm/cache.h>
DECLARE_GLOBAL_DATA_PTR;
int arch_cpu_init(void)
{
timer_init();
gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
arc: significant cache rework [1] Align cache management functions to those in Linux kernel. I.e.: a) Use the same functions for all cache ops (D$ Inv/Flush) b) Split cache ops in 3 sub-functions: "before", "lineloop" and "after". That way we may re-use "before" and "after" functions for region and full cache ops. [2] Implement full-functional L2 (SLC) management. Before SLC was simply disabled early on boot. It's also possible to enable or disable L2 cache from config utility. [3] Disable/enable corresponding caches early on boot. So if U-Boot is configured to use caches they will be used at all times (this is useful in partucular for speed-up of relocation). Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2015-05-18 13:56:26 +00:00
cache_init();
arc: add cpu files Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Francois Bedard <fbedard@synopsys.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Heiko Schocher <hs@denx.de>
2014-02-04 08:56:14 +00:00
return 0;
}
int arch_early_init_r(void)
{
gd->bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
gd->bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
return 0;
}
board_f: Rename initdram() to dram_init() This allows us to use the same DRAM init function on all archs. Add a dummy function for arc, which does not use DRAM init here. Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Dummy function on nios2] Signed-off-by: Tom Rini <trini@konsulko.com>
2017-04-06 18:47:05 +00:00
/* This is a dummy function on arc */
int dram_init(void)
{
return 0;
}
ARC: Implement print_cpuinfo() Once we enable DISPLAY_CPUINFO for ARC we'll see ARC core family and version printed on boot. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-02 08:42:23 +00:00
#ifdef CONFIG_DISPLAY_CPUINFO
const char *decode_identity(void)
{
int arcver = read_aux_reg(ARC_AUX_IDENTITY) & 0xff;
switch (arcver) {
/* ARCompact cores */
case 0x32: return "ARC 700 v4.4-4.5";
case 0x33: return "ARC 700 v4.6-v4.9";
case 0x34: return "ARC 700 v4.10";
case 0x35: return "ARC 700 v4.11";
/* ARCv2 cores */
case 0x41: return "ARC EM v1.1a";
case 0x42: return "ARC EM v3.0";
case 0x43: return "ARC EM v4.0";
case 0x50: return "ARC HS v1.0";
case 0x51: return "ARC EM v2.0";
case 0x52: return "ARC EM v2.1";
case 0x53: return "ARC HS v3.0";
case 0x54: return "ARC HS v4.0";
default: return "Unknown ARC core";
}
}
ARC: make generic print_cpuinfo() weak This allows board to override print_cpuinfo() because they might know better which ARChitect template was used. This way we may not only derive base architecture type and version but more meaningful things like "ARC EM7D" instead of simple "ARC EM", "ARC HS36" instead of "ARC HS". Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-10 10:59:33 +00:00
__weak int print_cpuinfo(void)
ARC: Implement print_cpuinfo() Once we enable DISPLAY_CPUINFO for ARC we'll see ARC core family and version printed on boot. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
2018-10-02 08:42:23 +00:00
{
printf("CPU: %s\n", decode_identity());
return 0;
}
#endif /* CONFIG_DISPLAY_CPUINFO */
Reference in a new issue Copy permalink