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authorGabor Juhos <juhosg@openwrt.org>2008-12-14 20:17:20 +0000
committerGabor Juhos <juhosg@openwrt.org>2008-12-14 20:17:20 +0000
commitee6f794099041720241b6d70c73466152d98504e (patch)
tree2058a75b6baa736e4b7a2ecc11836cf9540b6f97 /target
parent8e23f40be7b6f479e64da7c1c111b1249dfa427c (diff)
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[kernel] add simple prom emulator for MIPS
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13632 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target')
-rw-r--r--target/linux/generic-2.6/patches-2.6.26/021-mips_simple_prom_emulator.patch50
1 files changed, 50 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/patches-2.6.26/021-mips_simple_prom_emulator.patch b/target/linux/generic-2.6/patches-2.6.26/021-mips_simple_prom_emulator.patch
new file mode 100644
index 0000000000..2c0ffb8ae3
--- /dev/null
+++ b/target/linux/generic-2.6/patches-2.6.26/021-mips_simple_prom_emulator.patch
@@ -0,0 +1,50 @@
+--- a/arch/mips/Kconfig
++++ b/arch/mips/Kconfig
+@@ -860,6 +860,9 @@ config SYNC_R4K
+
+ config MIPS_MACHINE
+ def_bool n
++
++config PROM_EMU
++ def_bool n
+
+ config NO_IOPORT
+ def_bool n
+--- a/arch/mips/kernel/head.S
++++ b/arch/mips/kernel/head.S
+@@ -142,6 +142,15 @@ FEXPORT(__kernel_entry)
+ j kernel_entry
+ #endif
+
++#ifdef CONFIG_PROM_EMU
++EXPORT(prom_emu_argv)
++ .dw 0
++ .dw prom_emu_cmdline
++ .ascii "CMDLINE:"
++EXPORT(prom_emu_cmdline)
++ .fill 0x400
++#endif
++
+ __REF
+
+ NESTED(kernel_entry, 16, sp) # kernel entry point
+@@ -182,6 +191,19 @@ NESTED(kernel_entry, 16, sp) # kernel
+ LONG_S zero, (t0)
+ bne t0, t1, 1b
+
++#ifdef CONFIG_PROM_EMU
++ PTR_LA t0, prom_emu_cmdline
++ LONG_L t1, 0(t0)
++ beqz t1, 1f
++
++ li a0, 2
++ PTR_LA a1, prom_emu_argv
++ move a2, zero
++ move a3, zero
++
++1:
++#endif /* CONFIG_PROM_EMU */
++
+ LONG_S a0, fw_arg0 # firmware arguments
+ LONG_S a1, fw_arg1
+ LONG_S a2, fw_arg2