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powerpc/64s: Remove POWER9 DD1 support

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POWER9 DD1 was never a product. It is no longer supported by upstream
firmware, and it is not effectively supported in Linux due to lack of
testing.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
[mpe: Remove arch_make_huge_pte() entirely]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin
2018-07-05 18:47:00 +10:00
committed by Michael Ellerman
parent ce397d215c
commit 2bf1071a8d
32 changed files with 65 additions and 532 deletions
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30
arch/powerpc/mm/hash_utils_64.c
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@@ -808,31 +808,6 @@ int hash__remove_section_mapping(unsigned long start, unsigned long end)
}
#endif /* CONFIG_MEMORY_HOTPLUG */
static void update_hid_for_hash(void)
{
unsigned long hid0;
unsigned long rb = 3UL << PPC_BITLSHIFT(53); /* IS = 3 */
asm volatile("ptesync": : :"memory");
/* prs = 0, ric = 2, rs = 0, r = 1 is = 3 */
asm volatile(PPC_TLBIE_5(%0, %4, %3, %2, %1)
: : "r"(rb), "i"(0), "i"(0), "i"(2), "r"(0) : "memory");
asm volatile("eieio; tlbsync; ptesync; isync; slbia": : :"memory");
trace_tlbie(0, 0, rb, 0, 2, 0, 0);
/*
* now switch the HID
*/
hid0 = mfspr(SPRN_HID0);
hid0 &= ~HID0_POWER9_RADIX;
mtspr(SPRN_HID0, hid0);
asm volatile("isync": : :"memory");
/* Wait for it to happen */
while ((mfspr(SPRN_HID0) & HID0_POWER9_RADIX))
cpu_relax();
}
static void __init hash_init_partition_table(phys_addr_t hash_table,
unsigned long htab_size)
{
@@ -845,8 +820,6 @@ static void __init hash_init_partition_table(phys_addr_t hash_table,
htab_size = __ilog2(htab_size) - 18;
mmu_partition_table_set_entry(0, hash_table | htab_size, 0);
pr_info("Partition table %p\n", partition_tb);
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
update_hid_for_hash();
}
static void __init htab_initialize(void)
@@ -1077,9 +1050,6 @@ void hash__early_init_mmu_secondary(void)
/* Initialize hash table for that CPU */
if (!firmware_has_feature(FW_FEATURE_LPAR)) {
if (cpu_has_feature(CPU_FTR_POWER9_DD1))
update_hid_for_hash();
if (!cpu_has_feature(CPU_FTR_ARCH_300))
mtspr(SPRN_SDR1, _SDR1);
else