Contributors: 10
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexandre Ghiti |
222 |
86.05% |
2 |
18.18% |
| Thorsten Blum |
15 |
5.81% |
1 |
9.09% |
| Christoph Hellwig |
5 |
1.94% |
1 |
9.09% |
| Paul Walmsley |
4 |
1.55% |
1 |
9.09% |
| Jesse Taube |
3 |
1.16% |
1 |
9.09% |
| Albert Ou |
3 |
1.16% |
1 |
9.09% |
| Zong Li |
2 |
0.78% |
1 |
9.09% |
| Junhui Liu |
2 |
0.78% |
1 |
9.09% |
| Thomas Gleixner |
1 |
0.39% |
1 |
9.09% |
| Anup Patel |
1 |
0.39% |
1 |
9.09% |
| Total |
258 |
|
11 |
|
// SPDX-License-Identifier: GPL-2.0-only
#include <linux/types.h>
#include <linux/init.h>
#include <linux/libfdt.h>
#include <linux/string.h>
#include <asm/pgtable.h>
#include <asm/setup.h>
#include "pi.h"
static char early_cmdline[COMMAND_LINE_SIZE];
static char *get_early_cmdline(uintptr_t dtb_pa)
{
const char *fdt_cmdline;
ssize_t fdt_cmdline_size = 0;
int chosen_node;
if (!IS_ENABLED(CONFIG_CMDLINE_FORCE)) {
chosen_node = fdt_path_offset((void *)dtb_pa, "/chosen");
if (chosen_node >= 0) {
fdt_cmdline = fdt_getprop((void *)dtb_pa, chosen_node,
"bootargs", NULL);
if (fdt_cmdline) {
fdt_cmdline_size = strscpy(early_cmdline, fdt_cmdline);
if (fdt_cmdline_size < 0)
return early_cmdline;
}
}
}
if (IS_ENABLED(CONFIG_CMDLINE_EXTEND) ||
IS_ENABLED(CONFIG_CMDLINE_FORCE) ||
fdt_cmdline_size == 0 /* CONFIG_CMDLINE_FALLBACK */)
strscpy(early_cmdline + fdt_cmdline_size, CONFIG_CMDLINE,
COMMAND_LINE_SIZE - fdt_cmdline_size);
return early_cmdline;
}
static u64 match_noXlvl(char *cmdline)
{
if (strstr(cmdline, "no4lvl"))
return SATP_MODE_39;
else if (strstr(cmdline, "no5lvl"))
return SATP_MODE_48;
return 0;
}
u64 set_satp_mode_from_cmdline(uintptr_t dtb_pa)
{
char *cmdline = get_early_cmdline(dtb_pa);
return match_noXlvl(cmdline);
}
static bool match_nokaslr(char *cmdline)
{
return strstr(cmdline, "nokaslr");
}
bool set_nokaslr_from_cmdline(uintptr_t dtb_pa)
{
char *cmdline = get_early_cmdline(dtb_pa);
return match_nokaslr(cmdline);
}