From: David S. Miller Date: Tue, 11 Oct 2005 22:45:16 +0000 (-0700) Subject: [SPARC64]: Fix net booting on Ultra5 X-Git-Tag: v2.6.14-rc5~75^2 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b1b510aa284af1908d5d369d52f7dae16aaabd71;p=linux-2.6 [SPARC64]: Fix net booting on Ultra5 We were not doing alignment properly when remapping the kernel image. What we want is a 4MB aligned physical address to map at KERNBASE. Mistakedly we were 4MB aligning the virtual address where the kernel initially sits, that's wrong. Instead, we should PAGE align the virtual address, then 4MB align the physical address result the prom gives to us. Signed-off-by: David S. Miller --- diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S index f1dcdf8f74..4c942f7118 100644 --- a/arch/sparc64/kernel/head.S +++ b/arch/sparc64/kernel/head.S @@ -191,8 +191,9 @@ prom_boot_mapping_phys_low: stx %l3, [%sp + 2047 + 128 + 0x10] ! num_rets, 5 stx %l2, [%sp + 2047 + 128 + 0x18] ! arg1: "translate" stx %l5, [%sp + 2047 + 128 + 0x20] ! arg2: prom_mmu_ihandle_cache - srlx %l0, 22, %l3 - sllx %l3, 22, %l3 + /* PAGE align */ + srlx %l0, 13, %l3 + sllx %l3, 13, %l3 stx %l3, [%sp + 2047 + 128 + 0x28] ! arg3: vaddr, our PC stx %g0, [%sp + 2047 + 128 + 0x30] ! res1 stx %g0, [%sp + 2047 + 128 + 0x38] ! res2 @@ -211,6 +212,9 @@ prom_boot_mapping_phys_low: ldx [%sp + 2047 + 128 + 0x48], %l2 ! physaddr high stx %l2, [%l4 + 0x0] ldx [%sp + 2047 + 128 + 0x50], %l3 ! physaddr low + /* 4MB align */ + srlx %l3, 22, %l3 + sllx %l3, 22, %l3 stx %l3, [%l4 + 0x8] /* Leave service as-is, "call-method" */