bring coldfire support in shape

Binutils 2.24 is required to get a working kernel.
Ethernet in Qemu is still broken.
Qemu Patch is still rquired in 2.2.0.
Only kernel+initramfs is working.
It seems the signal handler problem is gone with
sash and simpleinit.

5 files changed, 274 insertions, 5 deletions

diff --git a/target/m68k/kernel/qemu-m68k b/target/m68k/kernel/qemu-m68k
index 681785452..3caa5323b 100644
--- a/target/m68k/kernel/qemu-m68k
+++ b/target/m68k/kernel/qemu-m68k
@@ -1,16 +1,16 @@
 CONFIG_M68K=y
 CONFIG_COLDFIRE=y
 CONFIG_M520x=y
-# CONFIG_MMU is not set
 CONFIG_CLOCK_SET=y
 CONFIG_CLOCK_FREQ=66666666
 CONFIG_CLOCK_DIV=1
 CONFIG_M5208EVB=y
 CONFIG_FREESCALE=y
 CONFIG_RAMBASE=0x40000000
-CONFIG_RAMSIZE=0x2000000
+CONFIG_RAMSIZE=0x0
 CONFIG_VECTORBASE=0x40000000
 CONFIG_KERNELBASE=0x40020000
+CONFIG_4KSTACKS=y
 CONFIG_RAMKERNEL=y
 CONFIG_BINFMT_FLAT=y
 CONFIG_SERIAL_MCF=y
diff --git a/target/m68k/qemu-m68k/patches/3.14.26/m68k-coldfire-fec.patch b/target/m68k/qemu-m68k/patches/3.14.26/m68k-coldfire-fec.patch
new file mode 100644
index 000000000..be0b18ad7
--- /dev/null
+++ b/target/m68k/qemu-m68k/patches/3.14.26/m68k-coldfire-fec.patch
@@ -0,0 +1,127 @@
+diff -Nur linux-3.14.26.orig/drivers/net/ethernet/freescale/fec_main.c linux-3.14.26/drivers/net/ethernet/freescale/fec_main.c
+--- linux-3.14.26.orig/drivers/net/ethernet/freescale/fec_main.c	2014-12-06 17:56:06.000000000 -0600
++++ linux-3.14.26/drivers/net/ethernet/freescale/fec_main.c	2014-12-28 22:15:41.533921249 -0600
+@@ -152,7 +152,7 @@
+ module_param_array(macaddr, byte, NULL, 0);
+ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
+ 
+-#if defined(CONFIG_M5272)
++#if defined(CONFIG_COLDFIRE)
+ /*
+  * Some hardware gets it MAC address out of local flash memory.
+  * if this is non-zero then assume it is the address to get MAC from.
+@@ -170,7 +170,7 @@
+ #else
+ #define	FEC_FLASHMAC	0
+ #endif
+-#endif /* CONFIG_M5272 */
++#endif /* CONFIG_COLDFIRE */
+ 
+ #if (((RX_RING_SIZE + TX_RING_SIZE) * 32) > PAGE_SIZE)
+ #error "FEC: descriptor ring size constants too large"
+@@ -565,7 +565,7 @@
+ 	/* Set MII speed */
+ 	writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* set RX checksum */
+ 	val = readl(fep->hwp + FEC_RACC);
+ 	if (fep->csum_flags & FLAG_RX_CSUM_ENABLED)
+@@ -626,7 +626,7 @@
+ #endif
+ 	}
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* enable pause frame*/
+ 	if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) ||
+ 	    ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) &&
+@@ -644,13 +644,13 @@
+ 	} else {
+ 		rcntl &= ~FEC_ENET_FCE;
+ 	}
+-#endif /* !defined(CONFIG_M5272) */
++#endif /* !defined(CONFIG_COLDFIRE) */
+ 
+ 	writel(rcntl, fep->hwp + FEC_R_CNTRL);
+ 
+ 	/* Setup multicast filter. */
+ 	set_multicast_list(ndev);
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+ 	writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+ #endif
+@@ -665,7 +665,7 @@
+ 	if (fep->bufdesc_ex)
+ 		ecntl |= (1 << 4);
+ 
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	/* Enable the MIB statistic event counters */
+ 	writel(0 << 31, fep->hwp + FEC_MIB_CTRLSTAT);
+ #endif
+@@ -1117,7 +1117,7 @@
+ 	 * 3) from flash or fuse (via platform data)
+ 	 */
+ 	if (!is_valid_ether_addr(iap)) {
+-#ifdef CONFIG_M5272
++#ifdef CONFIG_COLDFIRE
+ 		if (FEC_FLASHMAC)
+ 			iap = (unsigned char *)FEC_FLASHMAC;
+ #else
+@@ -1304,7 +1304,7 @@
+ 	/* mask with MAC supported features */
+ 	if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
+ 		phy_dev->supported &= PHY_GBIT_FEATURES;
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 		phy_dev->supported |= SUPPORTED_Pause;
+ #endif
+ 	}
+@@ -1491,7 +1491,7 @@
+ 	}
+ }
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 
+ static void fec_enet_get_pauseparam(struct net_device *ndev,
+ 				    struct ethtool_pauseparam *pause)
+@@ -1637,7 +1637,7 @@
+ 		return -EOPNOTSUPP;
+ 	}
+ }
+-#endif /* !defined(CONFIG_M5272) */
++#endif /* !defined(CONFIG_COLDFIRE) */
+ 
+ static int fec_enet_nway_reset(struct net_device *dev)
+ {
+@@ -1651,7 +1651,7 @@
+ }
+ 
+ static const struct ethtool_ops fec_enet_ethtool_ops = {
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	.get_pauseparam		= fec_enet_get_pauseparam,
+ 	.set_pauseparam		= fec_enet_set_pauseparam,
+ #endif
+@@ -1661,7 +1661,7 @@
+ 	.get_link		= ethtool_op_get_link,
+ 	.get_ts_info		= fec_enet_get_ts_info,
+ 	.nway_reset		= fec_enet_nway_reset,
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	.get_ethtool_stats	= fec_enet_get_ethtool_stats,
+ 	.get_strings		= fec_enet_get_strings,
+ 	.get_sset_count		= fec_enet_get_sset_count,
+@@ -2110,7 +2110,7 @@
+ 	/* setup board info structure */
+ 	fep = netdev_priv(ndev);
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* default enable pause frame auto negotiation */
+ 	if (pdev->id_entry &&
+ 	    (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT))
diff --git a/target/m68k/qemu-m68k/patches/3.14.26/qemu-coldfire.patch b/target/m68k/qemu-m68k/patches/3.14.26/qemu-coldfire.patch
new file mode 100644
index 000000000..5bbda8c4d
--- /dev/null
+++ b/target/m68k/qemu-m68k/patches/3.14.26/qemu-coldfire.patch
@@ -0,0 +1,24 @@
+m68k: enabled software emulation of separate supervisor/user stack
+
+Recent Coldfires have separate supervisor and user stack pointers, but
+since older Coldfires didn't have that, the Linux kernel has a kind of
+emulation mechanism for those pointers.
+
+Apparently, according to the Kconfig.cpu file, the 5208 is supposed to
+support such separate pointers, but Qemu doesn't implement it. So we
+cheat a bit here and force the usage of emulated separate stack
+pointers.
+
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
+
+diff -Nur linux-3.14.26.orig/arch/m68k/Kconfig.cpu linux-3.14.26/arch/m68k/Kconfig.cpu
+--- linux-3.14.26.orig/arch/m68k/Kconfig.cpu	2014-12-06 17:56:06.000000000 -0600
++++ linux-3.14.26/arch/m68k/Kconfig.cpu	2014-12-28 03:00:39.279037664 -0600
+@@ -146,6 +146,7 @@
+ 	depends on !MMU
+ 	select GENERIC_CLOCKEVENTS
+ 	select HAVE_CACHE_SPLIT
++	select COLDFIRE_SW_A7
+ 	help
+ 	   Freescale Coldfire 5207/5208 processor support.
+ 
diff --git a/target/m68k/qemu-m68k/patches/3.17.7/m68k-coldfire-fec.patch b/target/m68k/qemu-m68k/patches/3.17.7/m68k-coldfire-fec.patch
new file mode 100644
index 000000000..63c99e3bd
--- /dev/null
+++ b/target/m68k/qemu-m68k/patches/3.17.7/m68k-coldfire-fec.patch
@@ -0,0 +1,118 @@
+diff -Nur linux-3.17.7.orig/drivers/net/ethernet/freescale/fec_main.c linux-3.17.7/drivers/net/ethernet/freescale/fec_main.c
+--- linux-3.17.7.orig/drivers/net/ethernet/freescale/fec_main.c	2014-12-16 11:37:26.000000000 -0600
++++ linux-3.17.7/drivers/net/ethernet/freescale/fec_main.c	2014-12-28 21:27:24.773847877 -0600
+@@ -155,7 +155,7 @@
+ module_param_array(macaddr, byte, NULL, 0);
+ MODULE_PARM_DESC(macaddr, "FEC Ethernet MAC address");
+ 
+-#if defined(CONFIG_M5272)
++#if defined(CONFIG_COLDFIRE)
+ /*
+  * Some hardware gets it MAC address out of local flash memory.
+  * if this is non-zero then assume it is the address to get MAC from.
+@@ -173,7 +173,7 @@
+ #else
+ #define	FEC_FLASHMAC	0
+ #endif
+-#endif /* CONFIG_M5272 */
++#endif /* CONFIG_COLDFIRE */
+ 
+ /* Interrupt events/masks. */
+ #define FEC_ENET_HBERR	((uint)0x80000000)	/* Heartbeat error */
+@@ -889,7 +889,7 @@
+ 	/* Set MII speed */
+ 	writel(fep->phy_speed, fep->hwp + FEC_MII_SPEED);
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* set RX checksum */
+ 	val = readl(fep->hwp + FEC_RACC);
+ 	if (fep->csum_flags & FLAG_RX_CSUM_ENABLED)
+@@ -950,7 +950,7 @@
+ #endif
+ 	}
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* enable pause frame*/
+ 	if ((fep->pause_flag & FEC_PAUSE_FLAG_ENABLE) ||
+ 	    ((fep->pause_flag & FEC_PAUSE_FLAG_AUTONEG) &&
+@@ -968,13 +968,13 @@
+ 	} else {
+ 		rcntl &= ~FEC_ENET_FCE;
+ 	}
+-#endif /* !defined(CONFIG_M5272) */
++#endif /* !defined(CONFIG_COLDFIRE) */
+ 
+ 	writel(rcntl, fep->hwp + FEC_R_CNTRL);
+ 
+ 	/* Setup multicast filter. */
+ 	set_multicast_list(ndev);
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	writel(0, fep->hwp + FEC_HASH_TABLE_HIGH);
+ 	writel(0, fep->hwp + FEC_HASH_TABLE_LOW);
+ #endif
+@@ -989,7 +989,7 @@
+ 	if (fep->bufdesc_ex)
+ 		ecntl |= (1 << 4);
+ 
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	/* Enable the MIB statistic event counters */
+ 	writel(0 << 31, fep->hwp + FEC_MIB_CTRLSTAT);
+ #endif
+@@ -1436,7 +1436,7 @@
+ 	 * 3) from flash or fuse (via platform data)
+ 	 */
+ 	if (!is_valid_ether_addr(iap)) {
+-#ifdef CONFIG_M5272
++#ifdef CONFIG_COLDFIRE
+ 		if (FEC_FLASHMAC)
+ 			iap = (unsigned char *)FEC_FLASHMAC;
+ #else
+@@ -1699,7 +1699,7 @@
+ 	if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
+ 		phy_dev->supported &= PHY_GBIT_FEATURES;
+ 		phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 		phy_dev->supported |= SUPPORTED_Pause;
+ #endif
+ 	}
+@@ -1894,7 +1894,7 @@
+ 	}
+ }
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 
+ static void fec_enet_get_pauseparam(struct net_device *ndev,
+ 				    struct ethtool_pauseparam *pause)
+@@ -2049,7 +2049,7 @@
+ 		return -EOPNOTSUPP;
+ 	}
+ }
+-#endif /* !defined(CONFIG_M5272) */
++#endif /* !defined(CONFIG_COLDFIRE) */
+ 
+ static int fec_enet_nway_reset(struct net_device *dev)
+ {
+@@ -2068,7 +2068,7 @@
+ 	.get_drvinfo		= fec_enet_get_drvinfo,
+ 	.nway_reset		= fec_enet_nway_reset,
+ 	.get_link		= ethtool_op_get_link,
+-#ifndef CONFIG_M5272
++#ifndef CONFIG_COLDFIRE
+ 	.get_pauseparam		= fec_enet_get_pauseparam,
+ 	.set_pauseparam		= fec_enet_set_pauseparam,
+ 	.get_strings		= fec_enet_get_strings,
+@@ -2571,7 +2571,7 @@
+ 	/* setup board info structure */
+ 	fep = netdev_priv(ndev);
+ 
+-#if !defined(CONFIG_M5272)
++#if !defined(CONFIG_COLDFIRE)
+ 	/* default enable pause frame auto negotiation */
+ 	if (pdev->id_entry &&
+ 	    (pdev->id_entry->driver_data & FEC_QUIRK_HAS_GBIT))
diff --git a/target/m68k/qemu-m68k/patches/3.17.7/qemu-coldfire.patch b/target/m68k/qemu-m68k/patches/3.17.7/qemu-coldfire.patch
index 503fe8ef3..14d2f610b 100644
--- a/target/m68k/qemu-m68k/patches/3.17.7/qemu-coldfire.patch
+++ b/target/m68k/qemu-m68k/patches/3.17.7/qemu-coldfire.patch
@@ -11,9 +11,9 @@ pointers.
 
 Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
 
-diff -Nur linux-3.16.orig/arch/m68k/Kconfig.cpu linux-3.16/arch/m68k/Kconfig.cpu
---- linux-3.16.orig/arch/m68k/Kconfig.cpu	2014-08-04 00:25:02.000000000 +0200
-+++ linux-3.16/arch/m68k/Kconfig.cpu	2014-08-13 16:58:59.568332805 +0200
+diff -Nur linux-3.17.7.orig/arch/m68k/Kconfig.cpu linux-3.17.7/arch/m68k/Kconfig.cpu
+--- linux-3.17.7.orig/arch/m68k/Kconfig.cpu	2014-12-16 11:37:26.000000000 -0600
++++ linux-3.17.7/arch/m68k/Kconfig.cpu	2014-12-27 14:12:19.291459730 -0600
 @@ -146,6 +146,7 @@
  	depends on !MMU
  	select GENERIC_CLOCKEVENTS