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authorDavid S. Miller <davem@sunset.davemloft.net>2005-09-22 23:11:33 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2005-09-22 23:11:33 -0400
commitbff06d552240ba7f5b49482a4865871d7bc03dc2 (patch)
treeee760e252023bec338921296b12bb54987bedcac /arch/sparc64/prom/init.c
parent40fd3533c93f0062b6d1d8540961ef70fc8ab750 (diff)
[SPARC64]: Rewrite bootup sequence.
Instead of all of this cpu-specific code to remap the kernel to the correct location, use portable firmware calls to do this instead. What we do now is the following in position independant assembler: chosen_node = prom_finddevice("/chosen"); prom_mmu_ihandle_cache = prom_getint(chosen_node, "mmu"); vaddr = 4MB_ALIGN(current_text_addr()); prom_translate(vaddr, &paddr_high, &paddr_low, &mode); prom_boot_mapping_mode = mode; prom_boot_mapping_phys_high = paddr_high; prom_boot_mapping_phys_low = paddr_low; prom_map(-1, 8 * 1024 * 1024, KERNBASE, paddr_low); and that replaces the massive amount of by-hand TLB probing and programming we used to do here. The new code should also handle properly the case where the kernel is mapped at the correct address already (think: future kexec support). Consequently, the bulk of remap_kernel() dies as does the entirety of arch/sparc64/prom/map.S We try to share some strings in the PROM library with the ones used at bootup, and while we're here mark input strings to oplib.h routines with "const" when appropriate. There are many more simplifications now possible. For one thing, we can consolidate the two copies we now have of a lot of cpu setup code sitting in head.S and trampoline.S. This is a significant step towards CONFIG_DEBUG_PAGEALLOC support. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/prom/init.c')
-rw-r--r--arch/sparc64/prom/init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/prom/init.c b/arch/sparc64/prom/init.c
index 817faae058cd..8b4b622d0909 100644
--- a/arch/sparc64/prom/init.c
+++ b/arch/sparc64/prom/init.c
@@ -46,7 +46,7 @@ void __init prom_init(void *cif_handler, void *cif_stack)
46 if((prom_root_node == 0) || (prom_root_node == -1)) 46 if((prom_root_node == 0) || (prom_root_node == -1))
47 prom_halt(); 47 prom_halt();
48 48
49 prom_chosen_node = prom_finddevice("/chosen"); 49 prom_chosen_node = prom_finddevice(prom_chosen_path);
50 if (!prom_chosen_node || prom_chosen_node == -1) 50 if (!prom_chosen_node || prom_chosen_node == -1)
51 prom_halt(); 51 prom_halt();
52 52