test: enable earlyprintk

v2: test version that disables serial console completely

v3: publish vmlinux too

v4: build Intel PMC as a module

v5: drop "keep" from earlyprintk

v6: add "keep" back and disable kernel base addr randomization

v7: intel_pmc_ipc debug

v8: drop "keep" again, drop v4 and v7 changes

v9: add debug-kernel.cfg

Signed-off-by: Mikko Ylinen <[email protected]>

meta-ostro-xt/conf/distro/ostro-xt.conf

@@ -61,6 +61,9 @@ SERIAL_CONSOLE = "115200 ttyS2"
 # need to get rid of it.
 APPEND_remove = "console=ttyS0,115200"
 
+# DEBUG
+APPEND += " initcall_debug earlyprintk=pciserial,00:18.2,noclasscheck,nocfg apic=debug ignore_loglevel"
+
 # Mixing X11 startup from meta-oe (xserver-common) and OE-core
 # (x11-common) fails (they conflict). xserver-nodm-init from meta-oe
 # brings in xserver-common, so we stick to the one from OE-core.

meta-ostro-xt/recipes-kernel/linux/linux-yocto/0001-DBG-remove-ttyS2-for-BXT.patch

@@ -0,0 +1,41 @@
+From d8a4e34557d151b1036adaa0f14f041c07b0d133 Mon Sep 17 00:00:00 2001
+From: Fei Yang <[email protected]>
+Date: Mon, 31 Oct 2016 12:46:58 -0700
+Subject: [PATCH] DBG: remove ttyS2 for BXT
+
+Signed-off-by: Fei Yang <[email protected]>
+---
+ drivers/mfd/intel-lpss-pci.c | 3 ---
+ 1 file changed, 3 deletions(-)
+
+diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c
+index a19e571..7b892c4 100644
+--- a/drivers/mfd/intel-lpss-pci.c
++++ b/drivers/mfd/intel-lpss-pci.c
+@@ -135,7 +135,6 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
+ 	{ PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info },
+ 	{ PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info },
+-	{ PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info },
+@@ -151,7 +150,6 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
+ 	{ PCI_VDEVICE(INTEL, 0x1aba), (kernel_ulong_t)&bxt_i2c_info },
+ 	{ PCI_VDEVICE(INTEL, 0x1abc), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x1abe), (kernel_ulong_t)&bxt_uart_info },
+-	{ PCI_VDEVICE(INTEL, 0x1ac0), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x1ac2), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x1ac4), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x1ac6), (kernel_ulong_t)&bxt_info },
+@@ -168,7 +166,6 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
+ 	{ PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&bxt_i2c_info },
+ 	{ PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info },
+-	{ PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info },
+ 	{ PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info },
+ 	{ PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info },
+-- 
+1.9.1
+

meta-ostro-xt/recipes-kernel/linux/linux-yocto/0001-DO-NOT-MERGE-intel_pmc_ipc-Debug-messages-to-see-whe.patch

@@ -0,0 +1,67 @@
+From 8968d9311f2c2ebf456aba0180f44364c2129848 Mon Sep 17 00:00:00 2001
+From: Ilkka Koskinen <[email protected]>
+Date: Tue, 15 Nov 2016 09:02:52 -0800
+Subject: [PATCH] [DO NOT MERGE] intel_pmc_ipc: Debug messages to see when ipc
+ calls are sent first time
+
+---
+ drivers/platform/x86/intel_pmc_ipc.c | 18 ++++++++++++++++++
+ 1 file changed, 18 insertions(+)
+
+diff --git a/drivers/platform/x86/intel_pmc_ipc.c b/drivers/platform/x86/intel_pmc_ipc.c
+index 6f497e8..cd92364 100644
+--- a/drivers/platform/x86/intel_pmc_ipc.c
++++ b/drivers/platform/x86/intel_pmc_ipc.c
+@@ -238,13 +238,23 @@ int intel_pmc_ipc_simple_command(int cmd, int sub)
+ {
+ 	int ret;
+
++	static int dbgprint = 0;
++	if (!dbgprint)
++		printk(KERN_ERR "DEBUG: %s(%d)\n", __func__, __LINE__);
++
+ 	mutex_lock(&ipclock);
+ 	if (ipcdev.dev == NULL) {
++		if (!dbgprint)
++			printk(KERN_ERR "DEBUG: %s(%d)\n", __func__, __LINE__);
+ 		mutex_unlock(&ipclock);
+ 		return -ENODEV;
+ 	}
+ 	ipc_send_command(sub << IPC_CMD_SUBCMD | cmd);
+ 	ret = intel_pmc_ipc_check_status();
++	if (!dbgprint) {
++		printk(KERN_ERR "DEBUG: %s(%d)\n", __func__, __LINE__);
++		dbgprint++;
++	}
+ 	mutex_unlock(&ipclock);
+
+ 	return ret;
+@@ -272,10 +282,14 @@ int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, u32 *out,
+ 	u32 wbuf[4] = { 0 };
+ 	int ret;
+ 	int i;
++	static int dbgprint = 0;
+
+ 	if (inlen > IPC_DATA_BUFFER_SIZE || outlen > IPC_DATA_BUFFER_SIZE / 4)
+ 		return -EINVAL;
+
++	if (!dbgprint)
++		printk(KERN_ERR "DEBUG: %s(%d)\n", __func__, __LINE__);
++
+ 	mutex_lock(&ipclock);
+ 	if (ipcdev.dev == NULL) {
+ 		mutex_unlock(&ipclock);
+@@ -295,6 +309,10 @@ int intel_pmc_ipc_raw_cmd(u32 cmd, u32 sub, u8 *in, u32 inlen, u32 *out,
+ 		for (i = 0; i < outlen; i++)
+ 			*out++ = ipc_data_readl(4 * i);
+ 	}
++	if (!dbgprint) {
++		printk(KERN_ERR "DEBUG: %s(%d)\n", __func__, __LINE__);
++		dbgprint++;
++	}
+ 	mutex_unlock(&ipclock);
+
+ 	return ret;
+-- 
+2.7.4
+

meta-ostro-xt/recipes-kernel/linux/linux-yocto/0001-x86-early_printk-Allow-for-skipping-PCI-class-check.patch

@@ -0,0 +1,62 @@
+From 6fd469063b7515dae4ee845775b299a2e5c1cf2a Mon Sep 17 00:00:00 2001
+From: Andy Ross <[email protected]>
+Date: Mon, 9 Nov 2015 14:58:17 -0800
+Subject: [PATCH] x86: early_printk: Allow for skipping PCI class check
+
+Some PCI UART devices have nonstandard class codes, but still want to
+be used as a boot console.  Allow for skipping the class check on such
+platforms when you know that the passed device is correct.
+
+---
+ arch/x86/kernel/early_printk.c | 21 ++++++++++++++++-----
+ 1 file changed, 16 insertions(+), 5 deletions(-)
+
+diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
+index 21bf924..27ae392 100644
+--- a/arch/x86/kernel/early_printk.c
++++ b/arch/x86/kernel/early_printk.c
+@@ -218,7 +218,7 @@ static __init void early_pci_serial_init(char *s)
+ {
+ 	unsigned divisor;
+ 	unsigned long baud = DEFAULT_BAUD;
+-	u8 bus, slot, func;
++	u8 bus, slot, func, classcheck = 1;
+ 	u32 classcode, bar0;
+ 	u16 cmdreg;
+ 	char *e;
+@@ -246,6 +246,15 @@ static __init void early_pci_serial_init(char *s)
+ 	func = (u8)simple_strtoul(s, &e, 16);
+ 	s = e;
+
++	/*
++	 * Not all PCI UART devices have sane class codes, so allow a
++	 * "noclasscheck" flag to be prepended to disable the test.
++	 */
++	if (strstarts(s, ",noclasscheck")) {
++		classcheck = 0;
++		s += 13;
++	}
++
+ 	/* A baud might be following */
+ 	if (*s == ',')
+ 		s++;
+@@ -260,10 +269,12 @@ static __init void early_pci_serial_init(char *s)
+ 	/*
+ 	 * Verify it is a UART type device
+ 	 */
+-	if (((classcode >> 16 != PCI_CLASS_COMMUNICATION_MODEM) &&
+-	     (classcode >> 16 != PCI_CLASS_COMMUNICATION_SERIAL)) ||
+-	   (((classcode >> 8) & 0xff) != 0x02)) /* 16550 I/F at BAR0 */
+-		return;
++	if (classcheck) {
++		if (((classcode >> 16 != PCI_CLASS_COMMUNICATION_MODEM) &&
++		     (classcode >> 16 != PCI_CLASS_COMMUNICATION_SERIAL)) ||
++		    (((classcode >> 8) & 0xff) != 0x02)) /* 16550 I/F at BAR0 */
++			return;
++	}
+
+ 	/*
+ 	 * Determine if it is IO or memory mapped
+-- 
+1.9.1
+

meta-ostro-xt/recipes-kernel/linux/linux-yocto/disable-iwlwifi-upstream.cfg

@@ -5,3 +5,6 @@ CONFIG_MAC80211=n
 CONFIG_IWLWIFI=n
 CONFIG_IWLDVM=n
 CONFIG_IWLWIFI_P2P=n
+
+# for debugging purposes
+CONFIG_RANDOMIZE_BASE=n

meta-ostro-xt/recipes-kernel/linux/linux-yocto_4.4.bbappend

@@ -2,6 +2,10 @@ FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"
 
 SRC_URI_prepend_intel-corei7-64 = "file://fix_branch.scc "
 SRC_URI_append_intel-corei7-64 = " file://disable-iwlwifi-upstream.cfg"
+SRC_URI_append_intel-corei7-64 = " file://debug-kernel.cfg"
+SRC_URI_append_intel-corei7-64 = " file://0001-x86-early_printk-Allow-for-skipping-PCI-class-check.patch"
+#SRC_URI_append_intel-corei7-64 = " file://0001-DO-NOT-MERGE-intel_pmc_ipc-Debug-messages-to-see-whe.patch"
+#SRC_URI_append_intel-corei7-64 = " file://0001-DBG-remove-ttyS2-for-BXT.patch"
 
 LINUX_VERSION_INTEL_COMMON_forcevariable = "4.4.32"
 KBRANCH_corei7-64-intel-common_forcevariable = "standard/intel/bxt-rebase;rebaseable=1"
@@ -25,6 +29,9 @@ KERNEL_FEATURES_remove_corei7-64-intel-common = "features/amt/mei/mei.scc"
 # Non-standard feature which should only be enabled on platforms which need it.
 KERNEL_FEATURES_append_corei7-64-intel-common = " features/mei/mei-spd.scc"
 
+# deploy vmlinux
+KERNEL_ALT_IMAGETYPE = "vmlinux"
+
 # Removal will also happen in meta-ostro-bsp
 # (https://github.com/ostroproject/meta-ostro-bsp/pull/57) but for now
 # remove them directly here because otherwise the new upstream code