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--- mywiki:linux:linux_self-learning [2016/01/27 14:24] – super
+++ mywiki:linux:linux_self-learning [2019/09/15 18:55] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 **Linux Self learning**
-DMA Engine/LTQ HW Memcpy(ltq_hwmcpy.c)/netowrk: CONFIG_NET_DMA
+| Reference | [[https://www.linux-mips.org/wiki/Linux/MIPS_Porting_Guide|Porting Guide]] |
-Linux Porting and bootup
+====== Console ======
+The Linux kernel is configured to select the console by passing it the console parameter, for example:
+    console=ttyLTQ0,115200
+It can be checked via cat /proc/cmdline
+====== DMA ======
+DMA Engine/LTQ HW Memcpy(ltq_hwmcpy.c)/netowrk: CONFIG_NET_DMA  -- Asynchronous Transfers/Transforms API
+amba-pl08x.c: /driver/dma/---example of memcpy and dma-slave two examples
+<file>
+dma_cap_set(DMA_MEMCPY, pl08x->memcpy.cap_mask);
+	pl08x->memcpy.dev = &adev->dev;
+	pl08x->memcpy.device_alloc_chan_resources = pl08x_alloc_chan_resources;
+	pl08x->memcpy.device_free_chan_resources = pl08x_free_chan_resources;
+	pl08x->memcpy.device_prep_dma_memcpy = pl08x_prep_dma_memcpy;
+	pl08x->memcpy.device_prep_dma_interrupt = pl08x_prep_dma_interrupt;
+	pl08x->memcpy.device_tx_status = pl08x_dma_tx_status;
+	pl08x->memcpy.device_issue_pending = pl08x_issue_pending;
+	pl08x->memcpy.device_control = pl08x_control;
+	/* Initialize slave engine */
+	dma_cap_set(DMA_SLAVE, pl08x->slave.cap_mask);
+	pl08x->slave.dev = &adev->dev;
+	pl08x->slave.device_alloc_chan_resources = pl08x_alloc_chan_resources;
+	pl08x->slave.device_free_chan_resources = pl08x_free_chan_resources;
+	pl08x->slave.device_prep_dma_interrupt = pl08x_prep_dma_interrupt;
+	pl08x->slave.device_tx_status = pl08x_dma_tx_status;
+	pl08x->slave.device_issue_pending = pl08x_issue_pending;
+	pl08x->slave.device_prep_slave_sg = pl08x_prep_slave_sg;
+	pl08x->slave.device_control = pl08x_control;
+</file>
+====== Linux Porting and bootup ======
+====== Linux Module Initialization sequence ======
+[[LinuxModuleOrder|Linux Module Initialization sequence]]