u-boot.git/arch/arc, branch v2019.04

ARC: cache: define CONFIG_SYS_CACHELINE_SIZE as ARCH_DMA_MINALIGN

2019-01-25T05:41:09Z

Even though we don't use CONFIG_SYS_CACHELINE_SIZE in ARC-specific code it is used a lot in different drivers for alignment purposes. So we define it and make much more drivers at least compilable for ARC. Signed-off-by: Alexey Brodkin

ARC: Fix iteration in arc_xx_version()

2019-01-25T05:40:53Z

"i" gets incremented before we're entering loop body and effectively we iterate from 1 to 8 instead of 0 to 7. This way we: a) Skip the first line of struct hs_versions b) Go over it and access memory beyond the structure Signed-off-by: Alexey Brodkin

Kconfig: Migrate BOUNCE_BUFFER

2019-01-19T14:49:26Z

The bounce buffer is used by a few drivers (most of the MMC drivers) to overcome limitations in their respective DMA implementation. This moves the configuration to Kconfig and makes it user-selectable (even though it will be a required feature to make those drivers work): the expected usage is for drivers depending on this to 'select' it unconditionally from their respective Kconfig (see follow-up patches). This commit includes a full migration using moveconfig.py to ensure that each commit compiles. To ensure bisectability we update dependencies of various drivers to now select BOUNCE_BUFFER when needed. [trini: Squash all patches to ensure bisectability] Signed-off-by: Tom Rini Signed-off-by: Philipp Tomsich Reviewed-by: Otavio Salvador [dw_mmc portion] Reviewed-by: Fabio Estevam [mxsmmc portion] Reviewed-by: Simon Glass [tegra portion]

ARC: Improve identification of ARC cores

2018-12-03T11:26:18Z

1. Try to guess a ARC core template that was used i.e. not just name a core family but something more menaingful like "ARC HS38", "ARC EM11D" etc. We do it checking availability of the key differentiation features like: - Caches (we actually only check for L1 I$ fpr simplicity) - XY-memory - DSP extensions etc. 2. Identify ARC subsystems 3. Print core clock frequency Signed-off-by: Alexey Brodkin

emdk->emsdp: Rename board

2018-11-01T20:04:05Z

Real marketing name of the board was recently updated so to accommodate that change renaming the board and all related to it. Signed-off-by: Alexey Brodkin

ARC: Don't use COMMON section for global not-initialized variables

2018-10-15T10:35:17Z

By default GCC puts global non-initialized variables in COMMON section. And we used to ignore existence of COMMON section in our linker scripts though smart LD silently appended it right after .bss. And the problem here is variables from COMMON section even though require zeroing in run-time were not zeroed as they were placed right after __bss_end symbol. It was a pure luck we never faced serious problem due to this, but now it is fixed. Now as for some other architectures we'll just force GCC to put those global variables in normal .bss section. This solution is much nicer than adding COMMON section to each and every linker script. Signed-off-by: Alexey Brodkin

ARC: make generic print_cpuinfo() weak

2018-10-12T12:14:40Z

This allows board to override print_cpuinfo() because they might know better which ARChitect template was used. This way we may not only derive base architecture type and version but more meaningful things like "ARC EM7D" instead of simple "ARC EM", "ARC HS36" instead of "ARC HS". Signed-off-by: Alexey Brodkin

arc: Add support for IoT development kit

2018-10-05T13:57:00Z

The DesignWare ARC IoT Development Kit is a versatile platform that includes the necessary hardware and software to accelerate software development and debugging of sensor fusion, voice recognition and face detection designs. More information is avaialble here [1] and here [2]. The board is based on real silicon with ARC EM9D-based Data Fusion IP Subsystem. It sports a rich set of I/O including * DW USB OTG * DW MobileStorage (used for micro SD-card) * GPIO * multiple serial interface including DW APB UART * ADC, PWM and eFlash, SRAM and SPI Flash memory * Real-Time Clock (RTC) * Bluetooth module with worldwide regulatory compliance (FCC, IC, CE, ETSI, TELEC) * On-board 9-axis sensor (gyro, accelerometer and compass) Extensible with Arduino, Pmod, mikroBUS connectors and a 2x18 extension header. One of the most interesting features for developers is built-in Digilent USB JTAG probe so only micro-USB cable is needed! [1] https://www.synopsys.com/dw/ipdir.php?ds=arc_iot_development_kit [2] https://www.synopsys.com/dw/doc.php/ds/cc/iot_dev_kit.pdf Signed-off-by: Alexey Brodkin

ARC: Implement print_cpuinfo()

2018-10-05T13:55:42Z

Once we enable DISPLAY_CPUINFO for ARC we'll see ARC core family and version printed on boot. Signed-off-by: Alexey Brodkin

ARC: Add model property to boards .dts

2018-10-05T13:55:42Z

1. This way we sync with Linux kernel where we have model set for all ARC boards for quite some time, see [1] 2. Once we enable DISPLAY_BOARDINFO for ARC this info will be printed on boot givin some extra data-point about the board [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=618a9cd06dd471ac232f5b27325b24d26eba5571 Signed-off-by: Alexey Brodkin