You set up DBAT1 here...
+setup_usbgecko_bat:
+ /* prepare a BAT for early io */
+ lis r8, 0x0c00
+ ori r8, r8, 0x002a /* uncached, guarded ,rw */
+ lis r11, 0xcc00
+ ori r11, r11, 0x3 /* 128K */
+#ifdef CONFIG_WII
+ oris r8, r8, 0x0100
+ oris r11, r11, 0x0100
+#endif
+ mtspr SPRN_DBAT1L, r8
+ mtspr SPRN_DBAT1U, r11
+ sync
+ isync
+ blr
... and again here:
+void __init udbg_init_usbgecko(void)
+{
+ unsigned long vaddr, paddr;
+
+#if defined(CONFIG_GAMECUBE)
+ paddr = 0x0c000000;
+#elif defined(CONFIG_WII)
+ paddr = 0x0d000000;
+#else
+#error Invalid platform for USB Gecko based early debugging.
+#endif
+
+ vaddr = 0xc0000000 | paddr;
+ setbat(1, vaddr, paddr, 128*1024, PAGE_KERNEL_NCG);
Do you need to do it twice?
+ ug_io_base = (void __iomem *)(vaddr | 0x6814);
Oh, hardcoded slot2, now i'm confused which one should be it :-)
Segher
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