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powerpc/mm/radix: Update command line parsing for disable_radix

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kernel parameter disable_radix takes different options
disable_radix=yes|no|1|0  or just disable_radix.

prom_init parsing is not supporting these options.

Fixes: 1fd6c02207 ("powerpc/mm: Add a CONFIG option to choose if radix is used by default")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aneesh Kumar K.V 2018-03-30 17:39:02 +05:30 committed by Michael Ellerman
parent cec4e9b28f
commit 7a22d6321c
2 changed files with 14 additions and 4 deletions
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16
arch/powerpc/kernel/prom_init.c
View File

@ -171,7 +171,7 @@ static unsigned long __initdata prom_tce_alloc_start;
static unsigned long __initdata prom_tce_alloc_end;
#endif
static bool __initdata prom_radix_disable;
static bool prom_radix_disable __initdata = !IS_ENABLED(CONFIG_PPC_RADIX_MMU_DEFAULT);
struct platform_support {
bool hash_mmu;
@ -641,9 +641,19 @@ static void __init early_cmdline_parse(void)
opt = strstr(prom_cmd_line, "disable_radix");
if (opt) {
prom_debug("Radix disabled from cmdline\n");
prom_radix_disable = true;
opt += 13;
if (*opt && *opt == '=') {
bool val;
if (kstrtobool(++opt, &val))
prom_radix_disable = false;
else
prom_radix_disable = val;
} else
prom_radix_disable = true;
}
if (prom_radix_disable)
prom_debug("Radix disabled from cmdline\n");
}
#if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_PPC_POWERNV)

2
arch/powerpc/kernel/prom_init_check.sh
View File

@ -19,7 +19,7 @@
WHITELIST="add_reloc_offset __bss_start __bss_stop copy_and_flush
_end enter_prom memcpy memset reloc_offset __secondary_hold
__secondary_hold_acknowledge __secondary_hold_spinloop __start
strcmp strcpy strlcpy strlen strncmp strstr logo_linux_clut224
strcmp strcpy strlcpy strlen strncmp strstr kstrtobool logo_linux_clut224
reloc_got2 kernstart_addr memstart_addr linux_banner _stext
__prom_init_toc_start __prom_init_toc_end btext_setup_display TOC."