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ieee1275: Implement vec5 for cas negotiation

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As a legacy support, if the vector 5 is not implemented, Power Hypervisor will
consider the max CPUs as 64 instead 256 currently supported during
client-architecture-support negotiation.

This patch implements the vector 5 and set the MAX CPUs to 256 while setting the
others values to 0 (default).

Signed-off-by: Diego Domingos <diegodo@linux.vnet.ibm.com>
Acked-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Avnish Chouhan <avnish@linux.vnet.ibm.com>
Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com>
Reviewed-by: Robbie Harwood <rharwood@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Diego Domingos 2023-02-06 10:03:23 -05:00 committed by Daniel Kiper
parent 2e645b46e8
commit 1b4d91185b
1 changed files with 20 additions and 1 deletions
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21
grub-core/kern/ieee1275/init.c
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@ -500,6 +500,19 @@ struct option_vector2
grub_uint8_t max_pft_size;
} GRUB_PACKED;
struct option_vector5
{
grub_uint8_t byte1;
grub_uint8_t byte2;
grub_uint8_t byte3;
grub_uint8_t cmo;
grub_uint8_t associativity;
grub_uint8_t bin_opts;
grub_uint8_t micro_checkpoint;
grub_uint8_t reserved0;
grub_uint32_t max_cpus;
} GRUB_PACKED;
struct pvr_entry
{
grub_uint32_t mask;
@ -521,6 +534,8 @@ struct cas_vector
grub_uint16_t vec3;
grub_uint8_t vec4_size;
grub_uint16_t vec4;
grub_uint8_t vec5_size;
struct option_vector5 vec5;
} GRUB_PACKED;
/*
@ -545,7 +560,7 @@ grub_ieee1275_ibm_cas (void)
struct cas_vector vector =
{
.pvr_list = { { 0x00000000, 0xffffffff } }, /* any processor */
.num_vecs = 4 - 1,
.num_vecs = 5 - 1,
.vec1_size = 0,
.vec1 = 0x80, /* ignore */
.vec2_size = 1 + sizeof (struct option_vector2) - 2,
@ -556,6 +571,10 @@ grub_ieee1275_ibm_cas (void)
.vec3 = 0x00e0, /* ask for FP + VMX + DFP but don't halt if unsatisfied */
.vec4_size = 2 - 1,
.vec4 = 0x0001, /* set required minimum capacity % to the lowest value */
.vec5_size = 1 + sizeof (struct option_vector5) - 2,
.vec5 = {
0, 192, 0, 128, 0, 0, 0, 0, 256
}
};
INIT_IEEE1275_COMMON (&args.common, "call-method", 3, 2);