MIPS: TXx9: Runtime configuration of timeout-error

Add kernel options to control bus timeout error.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 11 insertions, 5 deletions

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index fa88aefea9ef..fa45f174b0ee 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -68,7 +68,12 @@ unsigned int txx9_master_clock;
 unsigned int txx9_cpu_clock;
 unsigned int txx9_gbus_clock;
 
+#ifdef CONFIG_CPU_TX39XX
+/* don't enable by default - see errata */
+int txx9_ccfg_toeon __initdata;
+#else
 int txx9_ccfg_toeon __initdata = 1;
+#endif
 
 /* Minimum CLK support */
 
@@ -315,6 +320,12 @@ static void __init preprocess_cmdline(void)
                 } else if (strcmp(str, "dcdisable") == 0) {
                         txx9_dc_disable = 1;
                         continue;
+                } else if (strcmp(str, "toeoff") == 0) {
+                        txx9_ccfg_toeon = 0;
+                        continue;
+                } else if (strcmp(str, "toeon") == 0) {
+                        txx9_ccfg_toeon = 1;
+                        continue;
                 }
                 if (arcs_cmdline[0])
                         strcat(arcs_cmdline, " ");
diff --git a/arch/mips/txx9/generic/setup_tx3927.c b/arch/mips/txx9/generic/setup_tx3927.c
index 4bc2f859379d..06c492576078 100644
--- a/arch/mips/txx9/generic/setup_tx3927.c
+++ b/arch/mips/txx9/generic/setup_tx3927.c
@@ -32,11 +32,6 @@ void __init tx3927_setup(void)
         int i;
         unsigned int conf;
 
-        /* don't enable - see errata */
-        txx9_ccfg_toeon = 0;
-        if (strstr(prom_getcmdline(), "toeon") != NULL)
-                txx9_ccfg_toeon = 1;
-
         txx9_reg_res_init(TX3927_REV_PCODE(), TX3927_REG_BASE,
                           TX3927_REG_SIZE);