From c48f2851473bf24cdfec371c5857826eaa6007b5 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sun, 1 Dec 2013 18:05:08 +0000 Subject: [PATCH] brcm47xx: deactivate mips wait instruction only for BCM4706 The wait instruction is only broken on the BCM4706 and not on the other similar SoCs. Signed-off-by: Hauke Mehrtens SVN-Revision: 38979 --- .../patches-3.10/170-fix-74k-cpu.patch | 34 +++++++++++++------ .../830-huawei_e970_support.patch | 4 +-- .../980-wnr834b_no_cardbus_invariant.patch | 2 +- 3 files changed, 27 insertions(+), 13 deletions(-) diff --git a/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch b/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch index 7715cf2bbc..c585faf8bb 100644 --- a/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch +++ b/target/linux/brcm47xx/patches-3.10/170-fix-74k-cpu.patch @@ -1,12 +1,26 @@ ---- a/arch/mips/kernel/idle.c -+++ b/arch/mips/kernel/idle.c -@@ -188,9 +188,6 @@ void __init check_wait(void) - break; +--- a/arch/mips/bcm47xx/setup.c ++++ b/arch/mips/bcm47xx/setup.c +@@ -35,6 +35,7 @@ + #include + #include + #include ++#include + #include + #include + #include +@@ -214,6 +215,15 @@ static void __init bcm47xx_register_bcma + panic("Failed to initialize BCMA bus (err %d)", err); - case CPU_74K: -- cpu_wait = r4k_wait; -- if ((c->processor_id & 0xff) >= PRID_REV_ENCODE_332(2, 1, 0)) -- cpu_wait = r4k_wait_irqoff; - break; + bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL); ++ ++ /* The BCM4706 has a problem with the CPU wait instruction. ++ * When r4k_wait or r4k_wait_irqoff is used will just hang and ++ * not return from a msleep(). Removing the cpu_wait ++ * functionality is a workaround for this problem. The BCM4716 ++ * does not have this problem. ++ */ ++ if (bcm47xx_bus.bcma.bus.chipinfo.id == BCMA_CHIP_ID_BCM4706) ++ cpu_wait = NULL; + } + #endif - case CPU_TX49XX: diff --git a/target/linux/brcm47xx/patches-3.10/830-huawei_e970_support.patch b/target/linux/brcm47xx/patches-3.10/830-huawei_e970_support.patch index 2ff649dde5..4cae1eac75 100644 --- a/target/linux/brcm47xx/patches-3.10/830-huawei_e970_support.patch +++ b/target/linux/brcm47xx/patches-3.10/830-huawei_e970_support.patch @@ -8,7 +8,7 @@ #include #include #include -@@ -244,6 +245,33 @@ void __init plat_mem_setup(void) +@@ -254,6 +255,33 @@ void __init plat_mem_setup(void) mips_set_machine_name(bcm47xx_board_get_name()); } @@ -42,7 +42,7 @@ static int __init bcm47xx_register_bus_complete(void) { switch (bcm47xx_bus_type) { -@@ -258,6 +286,8 @@ static int __init bcm47xx_register_bus_c +@@ -268,6 +296,8 @@ static int __init bcm47xx_register_bus_c break; #endif } diff --git a/target/linux/brcm47xx/patches-3.10/980-wnr834b_no_cardbus_invariant.patch b/target/linux/brcm47xx/patches-3.10/980-wnr834b_no_cardbus_invariant.patch index 069a0fa7a2..f30a4fbd75 100644 --- a/target/linux/brcm47xx/patches-3.10/980-wnr834b_no_cardbus_invariant.patch +++ b/target/linux/brcm47xx/patches-3.10/980-wnr834b_no_cardbus_invariant.patch @@ -1,6 +1,6 @@ --- a/arch/mips/bcm47xx/setup.c +++ b/arch/mips/bcm47xx/setup.c -@@ -121,6 +121,10 @@ static int bcm47xx_get_invariants(struct +@@ -122,6 +122,10 @@ static int bcm47xx_get_invariants(struct if (bcm47xx_nvram_getenv("cardbus", buf, sizeof(buf)) >= 0) iv->has_cardbus_slot = !!simple_strtoul(buf, NULL, 10);