Make sure that we declare the same range available as set by the virtual-dma properties hardcoded in sabre_configure().
This register is checked by FreeBSD during boot which panics if it finds a default (zero) value.
Signed-off-by: Mark Cave-Ayland mark.cave-ayland@ilande.co.uk --- openbios-devel/arch/sparc64/openbios.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)
diff --git a/openbios-devel/arch/sparc64/openbios.c b/openbios-devel/arch/sparc64/openbios.c index 9cc1ac2..3a36146 100644 --- a/openbios-devel/arch/sparc64/openbios.c +++ b/openbios-devel/arch/sparc64/openbios.c @@ -116,6 +116,20 @@ sparc64_reset_all(void) : : "r" (val), "r" (addr) : "memory"); }
+/* PCI Target Address Space Register (see UltraSPARC IIi User's Manual + section 19.3.0.4) */ +#define PBM_PCI_TARGET_AS 0x2028 +#define PBM_PCI_TARGET_AS_CD_ENABLE 0x40 + +static void +sparc64_set_tas_register(unsigned long val) +{ + unsigned long addr = APB_SPECIAL_BASE + PBM_PCI_TARGET_AS; + + asm("stxa %0, [%1] 0x15\n\t" + : : "r" (val), "r" (addr) : "memory"); +} + static void cpu_generic_init(const struct cpudef *cpu, uint32_t clock_frequency) { unsigned long iu_version; @@ -574,6 +588,10 @@ arch_init( void ) modules_init(); #ifdef CONFIG_DRIVER_PCI ob_pci_init(); + + /* Set TAS register to match the virtual-dma properties + set during sabre configure */ + sparc64_set_tas_register(PBM_PCI_TARGET_AS_CD_ENABLE); #endif nvconf_init(); device_end();