[PATCH 5.10 32/83] xtensa: use CONFIG_USE_OF instead of CONFIG_OF

Greg Kroah-Hartman
2021-10-11T13:54:45Z

From: Randy Dunlap <rdunlap@infradead.org>

[ Upstream commit d67ed2510d28a1eb33171010d35cf52178cfcbdd ]

CONFIG_OF can be set by a randconfig or by a user -- without setting the
early flattree option (OF_EARLY_FLATTREE). This causes build errors.
However, if randconfig or a user sets USE_OF in the Xtensa config,
the right kconfig symbols are set to fix the build.

Fixes these build errors:

../arch/xtensa/kernel/setup.c:67:19: error: ‘__dtb_start’ undeclared here (not in a function); did you mean ‘dtb_start’?
67 | void *dtb_start = __dtb_start;
| ^~~~~~~~~~~
../arch/xtensa/kernel/setup.c: In function 'xtensa_dt_io_area':
../arch/xtensa/kernel/setup.c:201:14: error: implicit declaration of function 'of_flat_dt_is_compatible'; did you mean 'of_machine_is_compatible'? [-Werror=implicit-function-declaration]
201 | if (!of_flat_dt_is_compatible(node, "simple-bus"))
../arch/xtensa/kernel/setup.c:204:18: error: implicit declaration of function 'of_get_flat_dt_prop' [-Werror=implicit-function-declaration]
204 | ranges = of_get_flat_dt_prop(node, "ranges", &len);
../arch/xtensa/kernel/setup.c:204:16: error: assignment to 'const __be32 *' {aka 'const unsigned int *'} from 'int' makes pointer from integer without a cast [-Werror=int-conversion]
204 | ranges = of_get_flat_dt_prop(node, "ranges", &len);
| ^
../arch/xtensa/kernel/setup.c: In function 'early_init_devtree':
../arch/xtensa/kernel/setup.c:228:9: error: implicit declaration of function 'early_init_dt_scan'; did you mean 'early_init_devtree'? [-Werror=implicit-function-declaration]
228 | early_init_dt_scan(params);
../arch/xtensa/kernel/setup.c:229:9: error: implicit declaration of function 'of_scan_flat_dt' [-Werror=implicit-function-declaration]
229 | of_scan_flat_dt(xtensa_dt_io_area, NULL);

xtensa-elf-ld: arch/xtensa/mm/mmu.o:(.text+0x0): undefined reference to `xtensa_kio_paddr'

Fixes: da844a81779e ("xtensa: add device trees support")
Fixes: 6cb971114f63 ("xtensa: remap io area defined in device tree")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/xtensa/include/asm/kmem_layout.h | 2 +-
arch/xtensa/kernel/setup.c | 12 ++++++------
arch/xtensa/mm/mmu.c | 2 +-
3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/xtensa/include/asm/kmem_layout.h b/arch/xtensa/include/asm/kmem_layout.h
index 7cbf68ca7106..6fc05cba61a2 100644
--- a/arch/xtensa/include/asm/kmem_layout.h
+++ b/arch/xtensa/include/asm/kmem_layout.h
@@ -78,7 +78,7 @@
#endif
#define XCHAL_KIO_SIZE 0x10000000

-#if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_OF)
+#if (!XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY) && defined(CONFIG_USE_OF)
#define XCHAL_KIO_PADDR xtensa_get_kio_paddr()
#ifndef __ASSEMBLY__
extern unsigned long xtensa_kio_paddr;
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index ed184106e4cf..ee9082a142fe 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -63,7 +63,7 @@ extern unsigned long initrd_end;
extern int initrd_below_start_ok;
#endif

-#ifdef CONFIG_OF
+#ifdef CONFIG_USE_OF
void *dtb_start = __dtb_start;
#endif

@@ -125,7 +125,7 @@ __tagtable(BP_TAG_INITRD, parse_tag_initrd);

#endif /* CONFIG_BLK_DEV_INITRD */

-#ifdef CONFIG_OF
+#ifdef CONFIG_USE_OF

static int __init parse_tag_fdt(const bp_tag_t *tag)
{
@@ -135,7 +135,7 @@ static int __init parse_tag_fdt(const bp_tag_t *tag)

__tagtable(BP_TAG_FDT, parse_tag_fdt);

-#endif /* CONFIG_OF */
+#endif /* CONFIG_USE_OF */

static int __init parse_tag_cmdline(const bp_tag_t* tag)
{
@@ -183,7 +183,7 @@ static int __init parse_bootparam(const bp_tag_t *tag)
}
#endif

-#ifdef CONFIG_OF
+#ifdef CONFIG_USE_OF

#if !XCHAL_HAVE_PTP_MMU || XCHAL_HAVE_SPANNING_WAY
unsigned long xtensa_kio_paddr = XCHAL_KIO_DEFAULT_PADDR;
@@ -232,7 +232,7 @@ void __init early_init_devtree(void *params)
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
}

-#endif /* CONFIG_OF */
+#endif /* CONFIG_USE_OF */

/*
* Initialize architecture. (Early stage)
@@ -253,7 +253,7 @@ void __init init_arch(bp_tag_t *bp_start)
if (bp_start)
parse_bootparam(bp_start);

-#ifdef CONFIG_OF
+#ifdef CONFIG_USE_OF
early_init_devtree(dtb_start);
#endif

diff --git a/arch/xtensa/mm/mmu.c b/arch/xtensa/mm/mmu.c
index fd2193df8a14..511bb92518f2 100644
--- a/arch/xtensa/mm/mmu.c
+++ b/arch/xtensa/mm/mmu.c
@@ -100,7 +100,7 @@ void init_mmu(void)

void init_kio(void)
{
-#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_OF)
+#if XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY && defined(CONFIG_USE_OF)
/*
* Update the IO area mapping in case xtensa_kio_paddr has changed
*/
--
2.33.0