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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
| commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
| tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /arch/csky/kernel/head.S | |
| parent | Initial commit. (diff) | |
| download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip | |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/csky/kernel/head.S')
| -rw-r--r-- | arch/csky/kernel/head.S | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/arch/csky/kernel/head.S b/arch/csky/kernel/head.S new file mode 100644 index 000000000..7e3e4f15b --- /dev/null +++ b/arch/csky/kernel/head.S @@ -0,0 +1,42 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#include <linux/linkage.h> +#include <linux/init.h> +#include <asm/page.h> +#include <abi/entry.h> + +__HEAD +ENTRY(_start) + SETUP_MMU + + /* set stack point */ + lrw r6, init_thread_union + THREAD_SIZE + mov sp, r6 + + jmpi csky_start +END(_start) + +#ifdef CONFIG_SMP +.align 10 +ENTRY(_start_smp_secondary) + SETUP_MMU + +#ifdef CONFIG_PAGE_OFFSET_80000000 + lrw r6, secondary_msa1 + ld.w r6, (r6, 0) + mtcr r6, cr<31, 15> +#endif + + lrw r6, secondary_pgd + ld.w r6, (r6, 0) + mtcr r6, cr<28, 15> + mtcr r6, cr<29, 15> + + /* set stack point */ + lrw r6, secondary_stack + ld.w r6, (r6, 0) + mov sp, r6 + + jmpi csky_start_secondary +END(_start_smp_secondary) +#endif |