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| author | Hari Bathini <hbathini@linux.ibm.com> | 2024-05-09 14:57:53 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-05-10 09:36:10 +0300 |
| commit | 78d5cc15fb7d1b2683f0baf418a9a870c02319fb (patch) | |
| tree | ea3a6361476b14d363b0fee5e73a9a51f829a282 /arch/powerpc/platforms/powernv | |
| parent | 98ec6d38ee57a734123c6f5d42640804034024ef (diff) | |
| download | linux-78d5cc15fb7d1b2683f0baf418a9a870c02319fb.tar.xz | |
powerpc/pseries/fadump: add support for multiple boot memory regions
Currently, fadump on pseries assumes a single boot memory region even
though f/w supports more than one boot memory region. Add support for
more boot memory regions to make the implementation flexible for any
enhancements that introduce other region types. For this, rtas memory
structure for fadump is updated to have multiple boot memory regions
instead of just one. Additionally, methods responsible for creating
the fadump memory structure during both the first and second kernel
boot have been modified to take these multiple boot memory regions
into account. Also, a new callback has been added to the fadump_ops
structure to get the maximum boot memory regions supported by the
platform.
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240509115755.519982-2-hbathini@linux.ibm.com
Diffstat (limited to 'arch/powerpc/platforms/powernv')
| -rw-r--r-- | arch/powerpc/platforms/powernv/opal-fadump.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/powernv/opal-fadump.c b/arch/powerpc/platforms/powernv/opal-fadump.c index 767a6b19e42a..5a88d7efb48a 100644 --- a/arch/powerpc/platforms/powernv/opal-fadump.c +++ b/arch/powerpc/platforms/powernv/opal-fadump.c @@ -599,6 +599,12 @@ static void opal_fadump_trigger(struct fadump_crash_info_header *fdh, pr_emerg("No backend support for MPIPL!\n"); } +/* FADUMP_MAX_MEM_REGS or lower */ +static int opal_fadump_max_boot_mem_rgns(void) +{ + return FADUMP_MAX_MEM_REGS; +} + static struct fadump_ops opal_fadump_ops = { .fadump_init_mem_struct = opal_fadump_init_mem_struct, .fadump_get_metadata_size = opal_fadump_get_metadata_size, @@ -611,6 +617,7 @@ static struct fadump_ops opal_fadump_ops = { .fadump_process = opal_fadump_process, .fadump_region_show = opal_fadump_region_show, .fadump_trigger = opal_fadump_trigger, + .fadump_max_boot_mem_rgns = opal_fadump_max_boot_mem_rgns, }; void __init opal_fadump_dt_scan(struct fw_dump *fadump_conf, u64 node) |