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author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-11-13 10:58:49 +0100 |
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committer | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2018-11-13 10:59:10 +0100 |
commit | 0ea0397a3a12f9720d6acb78a48da796a54e81aa (patch) | |
tree | e2078363019cb2fde493844d7f25293412c4b6df /arch/s390/boot/startup.c | |
parent | drm/syncobj: Fix compilation following partial revert (diff) | |
parent | Linux 4.20-rc1 (diff) | |
download | linux-dev-0ea0397a3a12f9720d6acb78a48da796a54e81aa.tar.xz linux-dev-0ea0397a3a12f9720d6acb78a48da796a54e81aa.zip |
Merge remote-tracking branch 'drm/drm-next' into drm-misc-next
drm-next is forwarded to v4.20-rc1, and we need this to make
a patch series apply.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Diffstat (limited to 'arch/s390/boot/startup.c')
-rw-r--r-- | arch/s390/boot/startup.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/s390/boot/startup.c b/arch/s390/boot/startup.c new file mode 100644 index 000000000000..4d441317cdeb --- /dev/null +++ b/arch/s390/boot/startup.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/string.h> +#include <asm/setup.h> +#include <asm/sclp.h> +#include "compressed/decompressor.h" +#include "boot.h" + +extern char __boot_data_start[], __boot_data_end[]; + +void error(char *x) +{ + sclp_early_printk("\n\n"); + sclp_early_printk(x); + sclp_early_printk("\n\n -- System halted"); + + disabled_wait(0xdeadbeef); +} + +#ifdef CONFIG_KERNEL_UNCOMPRESSED +unsigned long mem_safe_offset(void) +{ + return vmlinux.default_lma + vmlinux.image_size + vmlinux.bss_size; +} +#endif + +static void rescue_initrd(void) +{ + unsigned long min_initrd_addr; + + if (!IS_ENABLED(CONFIG_BLK_DEV_INITRD)) + return; + if (!INITRD_START || !INITRD_SIZE) + return; + min_initrd_addr = mem_safe_offset(); + if (min_initrd_addr <= INITRD_START) + return; + memmove((void *)min_initrd_addr, (void *)INITRD_START, INITRD_SIZE); + INITRD_START = min_initrd_addr; +} + +static void copy_bootdata(void) +{ + if (__boot_data_end - __boot_data_start != vmlinux.bootdata_size) + error(".boot.data section size mismatch"); + memcpy((void *)vmlinux.bootdata_off, __boot_data_start, vmlinux.bootdata_size); +} + +void startup_kernel(void) +{ + void *img; + + rescue_initrd(); + sclp_early_read_info(); + store_ipl_parmblock(); + setup_boot_command_line(); + setup_memory_end(); + detect_memory(); + if (!IS_ENABLED(CONFIG_KERNEL_UNCOMPRESSED)) { + img = decompress_kernel(); + memmove((void *)vmlinux.default_lma, img, vmlinux.image_size); + } + copy_bootdata(); + vmlinux.entry(); +} |