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Diffstat (limited to 'arch/powerpc/kernel/prom_init.c')
-rw-r--r--arch/powerpc/kernel/prom_init.c25
1 files changed, 17 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index fcca8077e..15099c416 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -641,6 +641,15 @@ static void __init early_cmdline_parse(void)
#define W(x) ((x) >> 24) & 0xff, ((x) >> 16) & 0xff, \
((x) >> 8) & 0xff, (x) & 0xff
+/* Firmware expects the value to be n - 1, where n is the # of vectors */
+#define NUM_VECTORS(n) ((n) - 1)
+
+/*
+ * Firmware expects 1 + n - 2, where n is the length of the option vector in
+ * bytes. The 1 accounts for the length byte itself, the - 2 .. ?
+ */
+#define VECTOR_LENGTH(n) (1 + (n) - 2)
+
unsigned char ibm_architecture_vec[] = {
W(0xfffe0000), W(0x003a0000), /* POWER5/POWER5+ */
W(0xffff0000), W(0x003e0000), /* POWER6 */
@@ -651,16 +660,16 @@ unsigned char ibm_architecture_vec[] = {
W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */
W(0xffffffff), W(0x0f000002), /* all 2.05-compliant */
W(0xfffffffe), W(0x0f000001), /* all 2.04-compliant and earlier */
- 6 - 1, /* 6 option vectors */
+ NUM_VECTORS(6), /* 6 option vectors */
/* option vector 1: processor architectures supported */
- 3 - 2, /* length */
+ VECTOR_LENGTH(2), /* length */
0, /* don't ignore, don't halt */
OV1_PPC_2_00 | OV1_PPC_2_01 | OV1_PPC_2_02 | OV1_PPC_2_03 |
OV1_PPC_2_04 | OV1_PPC_2_05 | OV1_PPC_2_06 | OV1_PPC_2_07,
/* option vector 2: Open Firmware options supported */
- 34 - 2, /* length */
+ VECTOR_LENGTH(33), /* length */
OV2_REAL_MODE,
0, 0,
W(0xffffffff), /* real_base */
@@ -674,17 +683,17 @@ unsigned char ibm_architecture_vec[] = {
48, /* max log_2(hash table size) */
/* option vector 3: processor options supported */
- 3 - 2, /* length */
+ VECTOR_LENGTH(2), /* length */
0, /* don't ignore, don't halt */
OV3_FP | OV3_VMX | OV3_DFP,
/* option vector 4: IBM PAPR implementation */
- 3 - 2, /* length */
+ VECTOR_LENGTH(2), /* length */
0, /* don't halt */
OV4_MIN_ENT_CAP, /* minimum VP entitled capacity */
/* option vector 5: PAPR/OF options */
- 19 - 2, /* length */
+ VECTOR_LENGTH(18), /* length */
0, /* don't ignore, don't halt */
OV5_FEAT(OV5_LPAR) | OV5_FEAT(OV5_SPLPAR) | OV5_FEAT(OV5_LARGE_PAGES) |
OV5_FEAT(OV5_DRCONF_MEMORY) | OV5_FEAT(OV5_DONATE_DEDICATE_CPU) |
@@ -717,12 +726,12 @@ unsigned char ibm_architecture_vec[] = {
OV5_FEAT(OV5_PFO_HW_RNG) | OV5_FEAT(OV5_PFO_HW_ENCR) |
OV5_FEAT(OV5_PFO_HW_842),
OV5_FEAT(OV5_SUB_PROCESSORS),
+
/* option vector 6: IBM PAPR hints */
- 4 - 2, /* length */
+ VECTOR_LENGTH(3), /* length */
0,
0,
OV6_LINUX,
-
};
/* Old method - ELF header with PT_NOTE sections only works on BE */