* mucking with cputable ...
@ 2008-04-30 23:52 Kevin Diggs
0 siblings, 0 replies; only message in thread
From: Kevin Diggs @ 2008-04-30 23:52 UTC (permalink / raw)
To: linuxppc-dev
[-- Attachment #1: Type: text/plain, Size: 599 bytes --]
Hi,
I'm trying to monkey with cputable. It is hanging after printing:
Preparing BATs
on the console (PowerMac 8600 with PowerLogix 750GX card, 2.6.24 YDL 4.0).
I am guessing I am doing this PTRRELOC() thing wrong? Can someone
explain what is going on here:
*PTRRELOC(&cur_cpu_spec) = &the_cpu_spec;
Up above both s and t needed reloccing? This is from identify_cpu().
Does this have something to do with data items in different sections
(i.e. initdata)?
I also welcome comments on where else the data I'm trying to graft into
cputable might go (i.e. cpu_freq driver).
Thanks!
kevin
[-- Attachment #2: cputable.c.diff --]
[-- Type: text/plain, Size: 5017 bytes --]
--- cputable-old_c 2008-02-25 18:24:23.000000000 -0800
+++ cputable-new_c 2008-04-30 14:31:37.000000000 -0700
@@ -38,11 +38,13 @@
extern void __setup_cpu_604(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_750(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_750cx(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_750fx(unsigned long offset, struct cpu_spec* spec);
+extern void __setup_cpu_750gx(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_7400(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_7410(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_745x(unsigned long offset, struct cpu_spec* spec);
+
#endif /* CONFIG_PPC32 */
#ifdef CONFIG_PPC64
extern void __setup_cpu_ppc970(unsigned long offset, struct cpu_spec* spec);
extern void __setup_cpu_ppc970MP(unsigned long offset, struct cpu_spec* spec);
@@ -70,8 +72,25 @@
PPC_FEATURE_HAS_ALTIVEC_COMP)
#define COMMON_USER_BOOKE (PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU | \
PPC_FEATURE_BOOKE)
+#ifdef CONFIG_PPC32
+static struct ppc_misc_750fgx __initdata ppc_misc_750fx={
+ .misc_cp=ppc_misc_cp_750fgx,
+ .min_ratio=2, /* min bus ratio */
+ .max_ratio=20, /* max bus ratio */
+ .min_core=400000, /* min core frequency per spec */
+ .max_core=800000, /* max core frequency per spec */
+};
+static struct ppc_misc_750fgx __initdata ppc_misc_750gx={
+ .misc_cp=ppc_misc_cp_750fgx,
+ .min_ratio=2, /* min bus ratio */
+ .max_ratio=20, /* max bus ratio */
+ .min_core=500000, /* min core frequency per spec */
+ .max_core=1000000, /* max core frequency per spec */
+};
+#endif /* CONFIG_PPC32 */
+
static struct cpu_spec __initdata cpu_specs[] = {
#ifdef CONFIG_PPC64
{ /* Power3 */
.pvr_mask = 0xffff0000,
@@ -590,8 +609,9 @@
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
.cpu_setup = __setup_cpu_750,
+ .misc = (void *) &ppc_misc_750fx,
.platform = "ppc750",
},
{ /* 750FX rev 2.0 must disable HID0[DPM] */
.pvr_mask = 0xffffffff,
@@ -602,8 +622,9 @@
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
.cpu_setup = __setup_cpu_750,
+ .misc = (void *) &ppc_misc_750fx,
.platform = "ppc750",
},
{ /* 750FX (All revs except 2.0) */
.pvr_mask = 0xffff0000,
@@ -614,20 +635,48 @@
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
.cpu_setup = __setup_cpu_750fx,
+ .misc = (void *) &ppc_misc_750fx,
.platform = "ppc750",
},
- { /* 750GX */
+ { /* 750GX rev 1.x */
.pvr_mask = 0xffff0000,
.pvr_value = 0x70020000,
.cpu_name = "750GX",
.cpu_features = CPU_FTRS_750GX,
.cpu_user_features = COMMON_USER | PPC_FEATURE_PPC_LE,
.icache_bsize = 32,
.dcache_bsize = 32,
.num_pmcs = 4,
- .cpu_setup = __setup_cpu_750fx,
+ .cpu_setup = __setup_cpu_750gx,
+ .misc = (void *) &ppc_misc_750gx,
+ .platform = "ppc750",
+ },
+ { /* 750GX (rev 2.3, as used on PowerLogix 750GX upgrade card */
+ .pvr_mask = 0xffffffff,
+ .pvr_value = 0x00080203,
+ .cpu_name = "750GX",
+ .cpu_features = CPU_FTRS_750GX,
+ .cpu_user_features = COMMON_USER | PPC_FEATURE_PPC_LE,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .num_pmcs = 4,
+ .cpu_setup = __setup_cpu_750gx,
+ .misc = (void *) &ppc_misc_750gx,
+ .platform = "ppc750",
+ },
+ { /* 750GX (All revs >= 2.0) */
+ .pvr_mask = 0xffffff00,
+ .pvr_value = 0x70020200,
+ .cpu_name = "750GX",
+ .cpu_features = CPU_FTRS_750GX,
+ .cpu_user_features = COMMON_USER | PPC_FEATURE_PPC_LE,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .num_pmcs = 4,
+ .cpu_setup = __setup_cpu_750gx,
+ .misc = (void *) &ppc_misc_750gx,
.platform = "ppc750",
},
{ /* 740/750 (L2CR bit need fixup for 740) */
.pvr_mask = 0xffff0000,
@@ -1331,8 +1380,34 @@
#endif /* CONFIG_PPC32 */
};
static struct cpu_spec the_cpu_spec;
+#ifdef CONFIG_PPC32
+/*
+ * Used to hold misc data structure
+ */
+static int ppc_misc_space[4];
+
+void * __init ppc_misc_cp_750fgx(void *miscp)
+{
+struct ppc_misc_750fgx *s=(struct ppc_misc_750fgx *)miscp;
+struct ppc_misc_750fgx *t=(struct ppc_misc_750fgx *)&ppc_misc_space;
+
+ /*
+ * Make sure we have enough static space!
+ */
+ if(sizeof(struct ppc_misc_750fgx)>sizeof(ppc_misc_space)) return NULL;
+
+ s=PTRRELOC(s);
+// t=PTRRELOC(t);
+
+ *t=*s;
+ t->misc_cp=NULL;
+
+ return &ppc_misc_space;
+}
+
+#endif /* CONFIG_PPC32 */
struct cpu_spec * __init identify_cpu(unsigned long offset, unsigned int pvr)
{
struct cpu_spec *s = cpu_specs;
@@ -1373,8 +1448,17 @@
if (s->cpu_setup) {
s->cpu_setup(offset, s);
}
#endif /* CONFIG_PPC64 || CONFIG_BOOKE */
+#if 0
+ if(s->misc) *PTRRELOC(&t->misc)=((struct ppc_misc_any *)
+ (s->misc))->misc_cp(s->misc);
+ else *PTRRELOC(&t->misc)=NULL;
+#else
+ if(s->misc) t->misc=((struct ppc_misc_any *)
+ (s->misc))->misc_cp(s->misc);
+ else t->misc=NULL;
+#endif
return s;
}
BUG();
return NULL;
[-- Attachment #3: cputable.h.diff --]
[-- Type: text/plain, Size: 1439 bytes --]
--- cputable-old_h 2008-02-25 18:24:47.000000000 -0800
+++ cputable-new_h 2008-04-30 06:45:14.000000000 -0700
@@ -56,8 +56,20 @@
PPC_PMC_IBM = 1,
PPC_PMC_PA6T = 2,
};
+struct ppc_misc_any {
+ void * (*misc_cp)(void *);
+};
+
+struct ppc_misc_750fgx {
+ void * (*misc_cp)(void *);
+ unsigned short min_ratio;
+ unsigned short max_ratio;
+ int min_core;
+ int max_core;
+};
+
/* NOTE WELL: Update identify_cpu() if fields are added or removed! */
struct cpu_spec {
/* CPU is matched via (PVR & pvr_mask) == pvr_value */
unsigned int pvr_mask;
@@ -96,8 +108,12 @@
unsigned long oprofile_mmcra_clear;
/* Name of processor class, for the ELF AT_PLATFORM entry */
char *platform;
+
+ /* miscellaneous catch all for various data (like min and max core
+ * frequencies for dual pll cpus) */
+ void *misc;
};
extern struct cpu_spec *cur_cpu_spec;
@@ -249,9 +265,9 @@
#define CPU_FTRS_750FX1 (CPU_FTRS_750 | CPU_FTR_DUAL_PLL_750FX | CPU_FTR_NO_DPM)
#define CPU_FTRS_750FX2 (CPU_FTRS_750 | CPU_FTR_NO_DPM)
#define CPU_FTRS_750FX (CPU_FTRS_750 | CPU_FTR_DUAL_PLL_750FX | \
CPU_FTR_HAS_HIGH_BATS)
-#define CPU_FTRS_750GX (CPU_FTRS_750FX)
+#define CPU_FTRS_750GX (CPU_FTRS_750FX | CPU_FTR_DUAL_PLL_750FX)
#define CPU_FTRS_7400_NOTAU (CPU_FTR_COMMON | \
CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | CPU_FTR_L2CR | \
CPU_FTR_ALTIVEC_COMP | CPU_FTR_HPTE_TABLE | \
CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_PPC_LE)
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2008-04-30 23:52 mucking with cputable Kevin Diggs
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