diff options
| author | Suraj Jitindar Singh <sjitindarsingh@gmail.com> | 2017-03-29 16:43:45 +1100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-04-26 12:00:42 +1000 |
| commit | ccd531b9c9de9cc497bd718104bf71b44bdbee45 (patch) | |
| tree | 7d6a5e5529df226615820f7935a528d0e0970bee /target | |
| parent | c88fa6dd4a7e0c45729b11f338f18f4042df6649 (diff) | |
target/ppc: Add ibm,processor-radix-AP-encodings for TCG
The ibm,processor-radix-AP-encodings device tree property of the cpu node
is used to specify the radix mode supported page sizes of the processor
to the guest os. Contained in the top 3 bits of the msb is the actual
page size (AP) encoding associated with the corresponding radix mode
supported page size. Add this property for a TCG guest, note the TCG code
is capable of translating any format so just add the 4 default page sizes.
The ibm,processor-radix-AP-encodings device tree property is defined as:
One to n cells in ascending order of radix mode supported page sizes
encoded as BE ints (32bit on ppc) in the form:
0bxxxyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
- 0bxxx -> AP encoding
- 0byyyyyyyyyyyyyyyyyyyyyyyyyyyyy -> supported page size encoded as a shift
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'target')
| -rw-r--r-- | target/ppc/translate_init.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/target/ppc/translate_init.c b/target/ppc/translate_init.c index c1a901455c..aa0c44dac1 100644 --- a/target/ppc/translate_init.c +++ b/target/ppc/translate_init.c @@ -8808,6 +8808,25 @@ POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data) pcc->interrupts_big_endian = ppc_cpu_interrupts_big_endian_lpcr; } +#ifdef CONFIG_SOFTMMU +/* + * Radix pg sizes and AP encodings for dt node ibm,processor-radix-AP-encodings + * Encoded as array of int_32s in the form: + * 0bxxxyyyyyyyyyyyyyyyyyyyyyyyyyyyyy + * x -> AP encoding + * y -> radix mode supported page size (encoded as a shift) + */ +static struct ppc_radix_page_info POWER9_radix_page_info = { + .count = 4, + .entries = { + 0x0000000c, /* 4K - enc: 0x0 */ + 0xa0000010, /* 64K - enc: 0x5 */ + 0x20000015, /* 2M - enc: 0x1 */ + 0x4000001e /* 1G - enc: 0x2 */ + } +}; +#endif /* CONFIG_SOFTMMU */ + static void init_proc_POWER9(CPUPPCState *env) { /* Common Registers */ @@ -8959,6 +8978,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data) pcc->handle_mmu_fault = ppc64_v3_handle_mmu_fault; /* segment page size remain the same */ pcc->sps = &POWER7_POWER8_sps; + pcc->radix_page_info = &POWER9_radix_page_info; #endif pcc->excp_model = POWERPC_EXCP_POWER8; pcc->bus_model = PPC_FLAGS_INPUT_POWER7; |