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path: root/drivers/serial/arm_dcc.c
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* serial: Remove DM_FLAG_PRE_RELOC flag in various driversBin Meng2018-11-141-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | When a driver declares DM_FLAG_PRE_RELOC flag, it wishes to be bound before relocation. However due to a bug in the DM core, the flag only takes effect when devices are statically declared via U_BOOT_DEVICE(). This bug has been fixed recently by commit "dm: core: Respect drivers with the DM_FLAG_PRE_RELOC flag in lists_bind_fdt()", but with the fix, it has a side effect that all existing drivers that declared DM_FLAG_PRE_RELOC flag will be bound before relocation now. This may expose potential boot failure on some boards due to insufficient memory during the pre-relocation stage. To mitigate this potential impact, the following changes are implemented: - Remove DM_FLAG_PRE_RELOC flag in the driver, if the driver only supports configuration from device tree (OF_CONTROL) - Keep DM_FLAG_PRE_RELOC flag in the driver only if the device is statically declared via U_BOOT_DEVICE() - Surround DM_FLAG_PRE_RELOC flag with OF_CONTROL check, for drivers that support both statically declared devices and configuration from device tree Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* serial: arm_dcc: Add DCC support for V7R based coresLokesh Vutla2018-09-101-1/+1
| | | | | | | DCC is supported on Cortex R series as well. Enable DCC support for V7R. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* arm: v7: Kconfig: Rename CPU_V7 as CPU_V7ALokesh Vutla2018-05-071-1/+1
| | | | | | | | | | | | | | | | | Currently CPU_V7 kconfig symbol supports only ARMv7A architectures under armv7 folder. This led to a misconception of creating separate folders for armv7m and armv7r. There is no reason to create separate folder for other armv7 based architectures when it can co-exist with few Kconfig symbols. As a first step towards a common folder, rename CPU_V7 as CPUV7A. Later separate Kconfig symbols can be added for CPU_V7R and CPU_V7M and can co exist in the same folder. Reviewed-by: Tom Rini <trini@konsulko.com> Tested-by: Michal Simek <michal.simek@xilinx.com> Suggested-by: Alexander Graf <agraf@suse.de> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
* SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini2018-05-071-2/+1
| | | | | | | | | | | | | | | | | | | | When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
* serial: dcc: Move driver to DMMichal Simek2016-02-251-25/+38
| | | | | | | | | | | | | | | | | | | | | | Enabling this driver requires some DT changes. Adding DCC to root or main bus: dcc: dcc { compatible = "arm,dcc"; u-boot,dm-pre-reloc; }; Extend alias list to link DCC: serial0 = &uart0; serial1 = &uart1; serial2 = &dcc; Change stdout-path to point to dcc port. stdout-path = "serial2:115200n8"; Also add support for debug uart to help with early debug. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Simon Glass <sjg@chromium.org>
* Add more SPDX-License-Identifier tagsTom Rini2016-01-191-12/+1
| | | | | | | | | In a number of places we had wordings of the GPL (or LGPL in a few cases) license text that were split in such a way that it wasn't caught previously. Convert all of these to the correct SPDX-License-Identifier tag. Signed-off-by: Tom Rini <trini@konsulko.com>
* arm: dcc: Add uart dcc support for armv8Siva Durga Prasad Paladugu2015-07-071-0/+16
| | | | | | | | Added UART DCC support for armv8 Signed-off-by: Siva Durga Prasad Paladugu <sivadur@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Tom Rini <trini@konsulko.com>
* fix ARM DCC support for ARMv7 based cores (e.g. CortexA)Alexander Merkle2015-04-161-2/+2
| | | | Signed-off-by: Alexander Merkle <alexander.merkle@lauterbach.com>
* serial: arm_dcc: Convert to use default_serial_putsAxel Lin2013-08-191-7/+1
| | | | | | | | Use default_serial_puts() instead of its own implementation. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Michal Simek <monstr@monstr.eu>
* serial: arm_dcc: Register with serial coreJagannadha Sutradharudu Teki2013-08-131-6/+27
| | | | | | | Register arm_dcc with drivers/serial/serial.c Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* serial: arm_dcc: Remove stdio structure supportJagannadha Sutradharudu Teki2013-08-131-16/+0
| | | | | | | | | Removed stdio structure ops support on arm_dcc driver, and need to register with serial core so-that it can access like remianing serial drivers. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com>
* serial: arm_dcc: Fix compilation warning and remove unneeded initializationMichal Simek2013-02-041-5/+0
| | | | | | | | | | | - arm_dcc_dev is already initialized. - Remove unused rc variable Warning log: arm_dcc.c: In function 'drv_arm_dcc_init': arm_dcc.c:145:6: warning: unused variable 'rc' [-Wunused-variable] Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Marek Vasut <marex@denx.de>
* serial: arm_dcc: Remove CONFIG_ARM_DCC_MULTI optionMichal Simek2013-02-041-11/+5
| | | | | | | | | | | | | | | CONFIG_ARM_DCC_MULTI should be also removed in the patch "serial: Remove CONFIG_SERIAL_MULTI from serial drivers" (sha1: a3827250606895ec2dd4b8d867342b7cabf3692f) Because the driver defines serial_* functions which cause conflict with serial.c (multiple definition of serial_*) Removing CONFIG_SERIAL_MULTI function also require to define default_serial_console for cases where another serial driver is not available in the system. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Marek Vasut <marex@denx.de>
* stdio/device: rework function naming conventionJean-Christophe PLAGNIOL-VILLARD2009-07-181-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far the console API uses the following naming convention: ======Extract====== typedef struct device_t; int device_register (device_t * dev); int devices_init (void); int device_deregister(char *devname); struct list_head* device_get_list(void); device_t* device_get_by_name(char* name); device_t* device_clone(device_t *dev); ======= which is too generic and confusing. Instead of using device_XX and device_t we change this into stdio_XX and stdio_dev This will also allow to add later a generic device mechanism in order to have support for multiple devices and driver instances. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Edited commit message. Signed-off-by: Wolfgang Denk <wd@denx.de>
* arm/dcc: add xscale supportJean-Christophe PLAGNIOL-VILLARD2009-06-121-0/+16
| | | | Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* arm/dcc: use static support to allow to use it at anytimeJean-Christophe PLAGNIOL-VILLARD2009-06-121-114/+42
| | | | | | the dcc can be used at the start of the cpu Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
* arm: add uart dcc supportJean-Christophe PLAGNIOL-VILLARD2009-02-221-0/+226
Serial driver via the EmbeddedICE macrocell's DCC channel using co-processor 14. It does include a timeout to ensure that the system does not totally freeze when there is nothing connected to read. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
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