oxnas: reboot target

Reboot the oxnas target based on Linux 4.14 by rebasing our support on
top of the now-existing upstream kernel support.
This commit brings oxnas support to the level of v4.17 having upstream
drivers for Ethernet, Serial and NAND flash.
Botch up OpenWrt's local drivers for EHCI, SATA and PCIe based on the
new platform code and device-tree.
Re-introduce base-files from old oxnas target which works for now but
needs further clean-up towards generic board support.

Functional issues:
 * PCIe won't come up (hence no USB3 on Shuttle KD20)
 * I2C bus of Akitio myCloud device is likely not to work (missing
   debounce support in new pinctrl driver)

Code-style issues:
 * plla/pllb needs further cleanup -- currently their users are writing
   into the syscon regmap after acquireling the clk instead of using
   defined clk_*_*() functions to setup multipliers and dividors.
 * PCIe phy needs its own little driver.
 * SATA driver is a monster and should be split into an mfd having
   a raidctrl regmap, sata controller, sata ports and sata phy.

Tested on MitraStar STG-212 aka. Medion Akoya MD86xxx and Shuttle KD20.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(squash-picked commit 17511a7ea8 and commit dcc34574ef from master)

1 files changed, 0 insertions, 87 deletions

diff --git a/target/linux/oxnas/files/arch/arm/mach-oxnas/fiq.S b/target/linux/oxnas/files/arch/arm/mach-oxnas/fiq.S
deleted file mode 100644
index 6acd5a7394..0000000000
--- a/target/linux/oxnas/files/arch/arm/mach-oxnas/fiq.S
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- *  Copyright (C) 2012 Gateworks Corporation
- *      Chris Lang <clang@gateworks.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/linkage.h>
-#include <asm/assembler.h>
-#include <asm/asm-offsets.h>
-
-#define D_CACHE_LINE_SIZE 32
-
-	.text
-
-/*
- * R8  - DMA Start Address
- * R9  - DMA Length
- * R10 - DMA Direction
- * R11 - DMA type
- * R12 - fiq_buffer Address
-*/
-
-	.global	ox820_fiq_end
-ENTRY(ox820_fiq_start)
-	str	r8, [r13]
-
-	ldmia	r12, {r8, r9, r10}
-	and	r11, r10, #0x3000000
-	and	r10, r10, #0xff
-
-	teq	r11, #0x1000000
-	beq	ox820_dma_map_area
-	teq	r11, #0x2000000
-	beq	ox820_dma_unmap_area
-	/* fall through */
-ox820_dma_flush_range:
-	bic	r8, r8, #D_CACHE_LINE_SIZE - 1
-1:
-	mcr	p15, 0, r8, c7, c14, 1		@ clean & invalidate D line
-	add	r8, r8, #D_CACHE_LINE_SIZE
-	cmp	r8, r9
-	blo	1b
-	/* fall through */
-ox820_fiq_exit:
-	mov	r8, #0
-	str	r8, [r12, #8]
-	mcr	p15, 0, r8, c7, c10, 4		@ drain write buffer
-	subs	pc, lr, #4
-
-ox820_dma_map_area:
-	add	r9, r9, r8
-	teq	r10, #DMA_FROM_DEVICE
-	beq	ox820_dma_inv_range
-	teq	r10, #DMA_TO_DEVICE
-	bne	ox820_dma_flush_range
-	/* fall through */
-ox820_dma_clean_range:
-	bic	r8, r8, #D_CACHE_LINE_SIZE - 1
-1:
-	mcr	p15, 0, r8, c7, c10, 1		@ clean D line
-	add	r8, r8, #D_CACHE_LINE_SIZE
-	cmp	r8, r9
-	blo	1b
-	b	ox820_fiq_exit
-
-ox820_dma_unmap_area:
-	add	r9, r9, r8
-	teq	r10, #DMA_TO_DEVICE
-	beq	ox820_fiq_exit
-	/* fall through */
-ox820_dma_inv_range:
-	tst	r8, #D_CACHE_LINE_SIZE - 1
-	bic	r8, r8, #D_CACHE_LINE_SIZE - 1
-	mcrne	p15, 0, r8, c7, c10, 1		@ clean D line
-	tst	r9, #D_CACHE_LINE_SIZE - 1
-	bic	r9, r9, #D_CACHE_LINE_SIZE - 1
-	mcrne	p15, 0, r9, c7, c14, 1		@ clean & invalidate D line
-1:
-	mcr	p15, 0, r8, c7, c6, 1		@ invalidate D line
-	add	r8, r8, #D_CACHE_LINE_SIZE
-	cmp	r8, r9
-	blo	1b
-	b	ox820_fiq_exit
-
-ox820_fiq_end: