* Low-level initialization for EP93xx
*
* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
+ * Copyright (C) 2013
+ * Sergey Kostanabev <sergey.kostanbaev <at> fairwaves.ru>
*
* Copyright (C) 2006 Dominic Rath <Dominic.Rath@gmx.de>
+ * Copyright (C) 2006 Cirrus Logic Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
*
* SPDX-License-Identifier: GPL-2.0+
*/
-#include <version.h>
-#include <asm/arch/ep93xx.h>
+#include <config.h>
+#include <asm/arch-ep93xx/ep93xx.h>
+
+/*
+/* Configure the SDRAM based on the supplied settings.
+ *
+ * Input: r0 - SDRAM DEVCFG register
+ * r2 - configuration for SDRAM chips
+ * Output: none
+ * Modifies: r3, r4
+ */
+ep93xx_sdram_config:
+ /* Program the SDRAM device configuration register. */
+ ldr r3, =SDRAM_BASE
+#ifdef CONFIG_EDB93XX_SDCS0
+ str r0, [r3, #SDRAM_OFF_DEVCFG0]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS1
+ str r0, [r3, #SDRAM_OFF_DEVCFG1]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS2
+ str r0, [r3, #SDRAM_OFF_DEVCFG2]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS3
+ str r0, [r3, #SDRAM_OFF_DEVCFG3]
+#endif
+
+ /* Set the Initialize and MRS bits (issue continuous NOP commands
+ * (INIT & MRS set))
+ */
+ ldr r4, =(EP93XX_SDRAMCTRL_GLOBALCFG_INIT | \
+ EP93XX_SDRAMCTRL_GLOBALCFG_MRS | \
+ EP93XX_SDRAMCTRL_GLOBALCFG_CKE)
+ str r4, [r3, #SDRAM_OFF_GLCONFIG]
+
+ /* Delay for 200us. */
+ mov r4, #0x3000
+delay1:
+ subs r4, r4, #1
+ bne delay1
+
+ /* Clear the MRS bit to issue a precharge all. */
+ ldr r4, =(EP93XX_SDRAMCTRL_GLOBALCFG_INIT | \
+ EP93XX_SDRAMCTRL_GLOBALCFG_CKE)
+ str r4, [r3, #SDRAM_OFF_GLCONFIG]
+
+ /* Temporarily set the refresh timer to 0x10. Make it really low so
+ * that refresh cycles are generated.
+ */
+ ldr r4, =0x10
+ str r4, [r3, #SDRAM_OFF_REFRSHTIMR]
+
+ /* Delay for at least 80 SDRAM clock cycles. */
+ mov r4, #80
+delay2:
+ subs r4, r4, #1
+ bne delay2
+
+ /* Set the refresh timer to the fastest required for any device
+ * that might be used. Set 9.6 ms refresh time.
+ */
+ ldr r4, =0x01e0
+ str r4, [r3, #SDRAM_OFF_REFRSHTIMR]
+
+ /* Select mode register update mode. */
+ ldr r4, =(EP93XX_SDRAMCTRL_GLOBALCFG_CKE | \
+ EP93XX_SDRAMCTRL_GLOBALCFG_MRS)
+ str r4, [r3, #SDRAM_OFF_GLCONFIG]
+
+ /* Program the mode register on the SDRAM by performing fake read */
+ ldr r4, [r2]
+
+ /* Select normal operating mode. */
+ ldr r4, =EP93XX_SDRAMCTRL_GLOBALCFG_CKE
+ str r4, [r3, #SDRAM_OFF_GLCONFIG]
+
+ /* Return to the caller. */
+ mov pc, lr
+
+/*
+ * Test to see if the SDRAM has been configured in a usable mode.
+ *
+ * Input: r0 - Test address of SDRAM
+ * Output: r0 - 0 -- Test OK, -1 -- Failed
+ * Modifies: r0-r5
+ */
+ep93xx_sdram_test:
+ /* Load the test patterns to be written to SDRAM. */
+ ldr r1, =0xf00dface
+ ldr r2, =0xdeadbeef
+ ldr r3, =0x08675309
+ ldr r4, =0xdeafc0ed
+
+ /* Store the test patterns to SDRAM. */
+ stmia r0, {r1-r4}
+
+ /* Load the test patterns from SDRAM one at a time and compare them
+ * to the actual pattern.
+ */
+ ldr r5, [r0]
+ cmp r5, r1
+ ldreq r5, [r0, #0x0004]
+ cmpeq r5, r2
+ ldreq r5, [r0, #0x0008]
+ cmpeq r5, r3
+ ldreq r5, [r0, #0x000c]
+ cmpeq r5, r4
+
+ /* Return -1 if a mismatch was encountered, 0 otherwise. */
+ mvnne r0, #0xffffffff
+ moveq r0, #0x00000000
+
+ /* Return to the caller. */
+ mov pc, lr
+
+/*
+ * Determine the size of the SDRAM. Use data=address for the scan.
+ *
+ * Input: r0 - Start SDRAM address
+ * Return: r0 - Single block size
+ * r1 - Valid block mask
+ * r2 - Total block count
+ * Modifies: r0-r5
+ */
+ep93xx_sdram_size:
+ /* Store zero at offset zero. */
+ str r0, [r0]
+
+ /* Start checking for an alias at 1MB into SDRAM. */
+ ldr r1, =0x00100000
+
+ /* Store the offset at the current offset. */
+check_block_size:
+ str r1, [r0, r1]
+
+ /* Read back from zero. */
+ ldr r2, [r0]
+
+ /* Stop searching of an alias was found. */
+ cmp r1, r2
+ beq found_block_size
+
+ /* Advance to the next power of two boundary. */
+ mov r1, r1, lsl #1
+
+ /* Loop back if the size has not reached 256MB. */
+ cmp r1, #0x10000000
+ bne check_block_size
+
+ /* A full 256MB of memory was found, so return it now. */
+ ldr r0, =0x10000000
+ ldr r1, =0x00000000
+ ldr r2, =0x00000001
+ mov pc, lr
+
+ /* An alias was found. See if the first block is 128MB in size. */
+found_block_size:
+ cmp r1, #0x08000000
+
+ /* The first block is 128MB, so there is no further memory. Return it
+ * now.
+ */
+ ldreq r0, =0x08000000
+ ldreq r1, =0x00000000
+ ldreq r2, =0x00000001
+ moveq pc, lr
+
+ /* Save the block size, set the block address bits to zero, and
+ * initialize the block count to one.
+ */
+ mov r3, r1
+ ldr r4, =0x00000000
+ ldr r5, =0x00000001
+
+ /* Look for additional blocks of memory by searching for non-aliases. */
+find_blocks:
+ /* Store zero back to address zero. It may be overwritten. */
+ str r0, [r0]
+
+ /* Advance to the next power of two boundary. */
+ mov r1, r1, lsl #1
+
+ /* Store the offset at the current offset. */
+ str r1, [r0, r1]
+
+ /* Read back from zero. */
+ ldr r2, [r0]
+
+ /* See if a non-alias was found. */
+ cmp r1, r2
+
+ /* If a non-alias was found, then or in the block address bit and
+ * multiply the block count by two (since there are two unique
+ * blocks, one with this bit zero and one with it one).
+ */
+ orrne r4, r4, r1
+ movne r5, r5, lsl #1
+
+ /* Continue searching if there are more address bits to check. */
+ cmp r1, #0x08000000
+ bne find_blocks
+
+ /* Return the block size, address mask, and count. */
+ mov r0, r3
+ mov r1, r4
+ mov r2, r5
+
+ /* Return to the caller. */
+ mov pc, lr
+
.globl lowlevel_init
lowlevel_init:
- /* backup return address */
- ldr r1, =SYSCON_SCRATCH0
- str lr, [r1]
- /* Turn on both LEDs */
- bl red_led_on
- bl green_led_on
+ mov r6, lr
+
+ /* Make sure caches are off and invalidated. */
+ ldr r0, =0x00000000
+ mcr p15, 0, r0, c1, c0, 0
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ /* Turn off the green LED and turn on the red LED. If the red LED
+ * is left on for too long, the external reset circuit described
+ * by application note AN258 will cause the system to reset.
+ */
+ ldr r1, =EP93XX_LED_DATA
+ ldr r0, [r1]
+ bic r0, r0, #EP93XX_LED_GREEN_ON
+ orr r0, r0, #EP93XX_LED_RED_ON
+ str r0, [r1]
+
+ /* Undo the silly static memory controller programming performed
+ * by the boot rom.
+ */
+ ldr r0, =SMC_BASE
+
+ /* Set WST1 and WST2 to 31 HCLK cycles (slowest access) */
+ ldr r1, =0x0000fbe0
+
+ /* Reset EP93XX_OFF_SMCBCR0 */
+ ldr r2, [r0]
+ orr r2, r2, r1
+ str r2, [r0]
+
+ ldr r2, [r0, #EP93XX_OFF_SMCBCR1]
+ orr r2, r2, r1
+ str r2, [r0, #EP93XX_OFF_SMCBCR1]
+
+ ldr r2, [r0, #EP93XX_OFF_SMCBCR2]
+ orr r2, r2, r1
+ str r2, [r0, #EP93XX_OFF_SMCBCR2]
+
+ ldr r2, [r0, #EP93XX_OFF_SMCBCR3]
+ orr r2, r2, r1
+ str r2, [r0, #EP93XX_OFF_SMCBCR3]
+
+ ldr r2, [r0, #EP93XX_OFF_SMCBCR6]
+ orr r2, r2, r1
+ str r2, [r0, #EP93XX_OFF_SMCBCR6]
+
+ ldr r2, [r0, #EP93XX_OFF_SMCBCR7]
+ orr r2, r2, r1
+ str r2, [r0, #EP93XX_OFF_SMCBCR7]
+
+ /* Set the PLL1 and processor clock. */
+ ldr r0, =SYSCON_BASE
+#ifdef CONFIG_EDB9301
+ /* 332MHz, giving a 166MHz processor clock. */
+ ldr r1, = 0x02b49907
+#else
+
+#ifdef CONFIG_EDB93XX_INDUSTRIAL
+ /* 384MHz, giving a 196MHz processor clock. */
+ ldr r1, =0x02a4bb38
+#else
+ /* 400MHz, giving a 200MHz processor clock. */
+ ldr r1, =0x02a4e39e
+#endif
+#endif
+ str r1, [r0, #SYSCON_OFF_CLKSET1]
+
+ nop
+ nop
+ nop
+ nop
+ nop
+
+ /* Need to make sure that SDRAM is configured correctly before
+ * coping the code into it.
+ */
+
+#ifdef CONFIG_EDB93XX_SDCS0
+ mov r11, #SDRAM_DEVCFG0_BASE
+#endif
+#ifdef CONFIG_EDB93XX_SDCS1
+ mov r11, #SDRAM_DEVCFG1_BASE
+#endif
+#ifdef CONFIG_EDB93XX_SDCS2
+ mov r11, #SDRAM_DEVCFG2_BASE
+#endif
+#ifdef CONFIG_EDB93XX_SDCS3
+ ldr r0, =SYSCON_BASE
+ ldr r0, [r0, #SYSCON_OFF_SYSCFG]
+ ands r0, r0, #SYSCON_SYSCFG_LASDO
+ moveq r11, #SDRAM_DEVCFG3_ASD0_BASE
+ movne r11, #SDRAM_DEVCFG3_ASD1_BASE
+#endif
+ /* See Table 13-5 in EP93xx datasheet for more info about DRAM
+ * register mapping */
+
+ /* Try a 32-bit wide configuration of SDRAM. */
+ ldr r0, =(EP93XX_SDRAMCTRL_DEVCFG_BANKCOUNT | \
+ EP93XX_SDRAMCTRL_DEVCFG_SROMLL | \
+ EP93XX_SDRAMCTRL_DEVCFG_CASLAT_2 | \
+ EP93XX_SDRAMCTRL_DEVCFG_RASTOCAS_2)
+
+ /* Set burst count: 4 and CAS: 2
+ * Burst mode [A11:A10]; CAS [A16:A14]
+ */
+ orr r2, r11, #0x00008800
+ bl ep93xx_sdram_config
+
+ /* Test the SDRAM. */
+ mov r0, r11
+ bl ep93xx_sdram_test
+ cmp r0, #0x00000000
+ beq ep93xx_sdram_done
+
+ /* Try a 16-bit wide configuration of SDRAM. */
+ ldr r0, =(EP93XX_SDRAMCTRL_DEVCFG_BANKCOUNT | \
+ EP93XX_SDRAMCTRL_DEVCFG_SROMLL | \
+ EP93XX_SDRAMCTRL_DEVCFG_CASLAT_2 | \
+ EP93XX_SDRAMCTRL_DEVCFG_RASTOCAS_2 | \
+ EP93XX_SDRAMCTRL_DEVCFG_EXTBUSWIDTH)
+
+ /* Set burst count: 8, CAS: 2, sequential burst
+ * Accoring to Table 13-3 for 16bit operations mapping must be shifted.
+ * Burst mode [A10:A9]; CAS [A15:A13]
+ */
+ orr r2, r11, #0x00004600
+ bl ep93xx_sdram_config
+
+ /* Test the SDRAM. */
+ mov r0, r11
+ bl ep93xx_sdram_test
+ cmp r0, #0x00000000
+ beq ep93xx_sdram_done
+
+ /* Turn off the red LED. */
+ ldr r0, =EP93XX_LED_DATA
+ ldr r1, [r0]
+ bic r1, r1, #EP93XX_LED_RED_ON
+ str r1, [r0]
+
+ /* There is no SDRAM so flash the green LED. */
+flash_green:
+ orr r1, r1, #EP93XX_LED_GREEN_ON
+ str r1, [r0]
+ ldr r2, =0x00010000
+flash_green_delay_1:
+ subs r2, r2, #1
+ bne flash_green_delay_1
+ bic r1, r1, #EP93XX_LED_GREEN_ON
+ str r1, [r0]
+ ldr r2, =0x00010000
+flash_green_delay_2:
+ subs r2, r2, #1
+ bne flash_green_delay_2
+ orr r1, r1, #EP93XX_LED_GREEN_ON
+ str r1, [r0]
+ ldr r2, =0x00010000
+flash_green_delay_3:
+ subs r2, r2, #1
+ bne flash_green_delay_3
+ bic r1, r1, #EP93XX_LED_GREEN_ON
+ str r1, [r0]
+ ldr r2, =0x00050000
+flash_green_delay_4:
+ subs r2, r2, #1
+ bne flash_green_delay_4
+ b flash_green
+
- /* Configure flash wait states before we switch to the PLL */
- bl flash_cfg
+ep93xx_sdram_done:
+ ldr r1, =EP93XX_LED_DATA
+ ldr r0, [r1]
+ bic r0, r0, #EP93XX_LED_RED_ON
+ str r0, [r1]
- /* Set up PLL */
- bl pll_cfg
+ /* Determine the size of the SDRAM. */
+ mov r0, r11
+ bl ep93xx_sdram_size
- /* Turn off the Green LED and leave the Red LED on */
- bl green_led_off
+ /* Save the SDRAM characteristics. */
+ mov r8, r0
+ mov r9, r1
+ mov r10, r2
- /* Setup SDRAM */
- bl sdram_cfg
+ /* Compute total memory size into r1 */
+ mul r1, r8, r10
+#ifdef CONFIG_EDB93XX_SDCS0
+ ldr r2, [r0, #SDRAM_OFF_DEVCFG0]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS1
+ ldr r2, [r0, #SDRAM_OFF_DEVCFG1]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS2
+ ldr r2, [r0, #SDRAM_OFF_DEVCFG2]
+#endif
+#ifdef CONFIG_EDB93XX_SDCS3
+ ldr r2, [r0, #SDRAM_OFF_DEVCFG3]
+#endif
- /* Turn on Green LED, Turn off the Red LED */
- bl green_led_on
- bl red_led_off
+ /* Consider small DRAM size as:
+ * < 32Mb for 32bit bus
+ * < 64Mb for 16bit bus
+ */
+ tst r2, #EP93XX_SDRAMCTRL_DEVCFG_EXTBUSWIDTH
+ moveq r1, r1, lsr #1
+ cmp r1, #0x02000000
- /* FIXME: we use async mode for now */
- mrc p15, 0, r0, c1, c0, 0
- orr r0, r0, #0xc0000000
- mcr p15, 0, r0, c1, c0, 0
+#if defined(CONFIG_EDB9301)
+ /* Set refresh counter to 20ms for small DRAM size, otherwise 9.6ms */
+ movlt r1, #0x03f0
+ movge r1, #0x01e0
+#else
+ /* Set refresh counter to 30.7ms for small DRAM size, otherwise 15ms */
+ movlt r1, #0x0600
+ movge r1, #0x2f0
+#endif
+ str r1, [r0, #SDRAM_OFF_REFRSHTIMR]
- /* restore return address */
- ldr r1, =SYSCON_SCRATCH0
- ldr lr, [r1]
+ /* Save the memory configuration information. */
+ orr r0, r11, #UBOOT_MEMORYCNF_BANK_SIZE
+ stmia r0, {r8-r11}
- mov pc, lr
+ mov lr, r6
+ mov pc, lr
/*
* Cirrus Logic EP93xx register definitions.
*
+ * Copyright (C) 2013
+ * Sergey Kostanbaev <sergey.kostanbaev <at> fairwaves.ru>
+ *
* Copyright (C) 2009
* Matthias Kaehlcke <matthias@kaehlcke.net>
*
#define SDRAM_DEVCFG_CASLAT_2 0x00010000
#define SDRAM_DEVCFG_RASTOCAS_2 0x00200000
+#define SDRAM_OFF_GLCONFIG 0x0004
+#define SDRAM_OFF_REFRSHTIMR 0x0008
+
+#define SDRAM_OFF_DEVCFG0 0x0010
+#define SDRAM_OFF_DEVCFG1 0x0014
+#define SDRAM_OFF_DEVCFG2 0x0018
+#define SDRAM_OFF_DEVCFG3 0x001C
+
+#define SDRAM_DEVCFG0_BASE 0xC0000000
+#define SDRAM_DEVCFG1_BASE 0xD0000000
+#define SDRAM_DEVCFG2_BASE 0xE0000000
+#define SDRAM_DEVCFG3_ASD0_BASE 0xF0000000
+#define SDRAM_DEVCFG3_ASD1_BASE 0x00000000
+
#define GLCONFIG_INIT (1 << 0)
#define GLCONFIG_MRS (1 << 1)
#define GLCONFIG_SMEMBUSY (1 << 5)
#define GLCONFIG_CLKSHUTDOWN (1 << 30)
#define GLCONFIG_CKE (1 << 31)
+#define EP93XX_SDRAMCTRL 0x80060000
+#define EP93XX_SDRAMCTRL_GLOBALCFG_INIT 0x00000001
+#define EP93XX_SDRAMCTRL_GLOBALCFG_MRS 0x00000002
+#define EP93XX_SDRAMCTRL_GLOBALCFG_SMEMBUSY 0x00000020
+#define EP93XX_SDRAMCTRL_GLOBALCFG_LCR 0x00000040
+#define EP93XX_SDRAMCTRL_GLOBALCFG_REARBEN 0x00000080
+#define EP93XX_SDRAMCTRL_GLOBALCFG_CLKSHUTDOWN 0x40000000
+#define EP93XX_SDRAMCTRL_GLOBALCFG_CKE 0x80000000
+
+#define EP93XX_SDRAMCTRL_REFRESH_MASK 0x0000FFFF
+
+#define EP93XX_SDRAMCTRL_BOOTSTATUS_WIDTH_32 0x00000002
+#define EP93XX_SDRAMCTRL_BOOTSTATUS_WIDTH_16 0x00000001
+#define EP93XX_SDRAMCTRL_BOOTSTATUS_WIDTH_8 0x00000000
+#define EP93XX_SDRAMCTRL_BOOTSTATUS_WIDTH_MASK 0x00000003
+#define EP93XX_SDRAMCTRL_BOOTSTATUS_MEDIA 0x00000004
+
+#define EP93XX_SDRAMCTRL_DEVCFG_EXTBUSWIDTH 0x00000004
+#define EP93XX_SDRAMCTRL_DEVCFG_BANKCOUNT 0x00000008
+#define EP93XX_SDRAMCTRL_DEVCFG_SROM512 0x00000010
+#define EP93XX_SDRAMCTRL_DEVCFG_SROMLL 0x00000020
+#define EP93XX_SDRAMCTRL_DEVCFG_2KPAGE 0x00000040
+#define EP93XX_SDRAMCTRL_DEVCFG_SFCONFIGADDR 0x00000080
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_MASK 0x00070000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_2 0x00010000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_3 0x00020000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_4 0x00030000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_5 0x00040000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_6 0x00050000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_7 0x00060000
+#define EP93XX_SDRAMCTRL_DEVCFG_CASLAT_8 0x00070000
+#define EP93XX_SDRAMCTRL_DEVCFG_WBL 0x00080000
+#define EP93XX_SDRAMCTRL_DEVCFG_RASTOCAS_MASK 0x00300000
+#define EP93XX_SDRAMCTRL_DEVCFG_RASTOCAS_2 0x00200000
+#define EP93XX_SDRAMCTRL_DEVCFG_RASTOCAS_3 0x00300000
+#define EP93XX_SDRAMCTRL_DEVCFG_AUTOPRECHARGE 0x01000000
+
/*
* 0x80070000 - 0x8007FFFF: Reserved
*/
};
#endif
+#define EP93XX_OFF_SMCBCR0 0x00
+#define EP93XX_OFF_SMCBCR1 0x04
+#define EP93XX_OFF_SMCBCR2 0x08
+#define EP93XX_OFF_SMCBCR3 0x0C
+#define EP93XX_OFF_SMCBCR6 0x18
+#define EP93XX_OFF_SMCBCR7 0x1C
+
#define SMC_BCR_IDCY_SHIFT 0
#define SMC_BCR_WST1_SHIFT 5
#define SMC_BCR_BLE (1 << 10)
};
#endif
+#define EP93XX_LED_DATA 0x80840020
+#define EP93XX_LED_GREEN_ON 0x0001
+#define EP93XX_LED_RED_ON 0x0002
+
+#define EP93XX_LED_DDR 0x80840024
+#define EP93XX_LED_GREEN_ENABLE 0x0001
+#define EP93XX_LED_RED_ENABLE 0x00020000
+
/*
* 0x80850000 - 0x8087FFFF: Reserved
*/
#define SYSCON_OFFSET 0x930000
#define SYSCON_BASE (EP93XX_APB_BASE | SYSCON_OFFSET)
+/* Security */
+#define SECURITY_EXTENSIONID 0x80832714
+
#ifndef __ASSEMBLY__
struct syscon_regs {
uint32_t pwrsts;
#define SYSCON_SCRATCH0 (SYSCON_BASE + 0x0040)
#endif
+#define SYSCON_OFF_CLKSET1 0x0020
+#define SYSCON_OFF_SYSCFG 0x009c
+
#define SYSCON_PWRCNT_UART_BAUD (1 << 29)
+#define SYSCON_PWRCNT_USH_EN (1 << 28)
#define SYSCON_CLKSET_PLL_X2IPD_SHIFT 0
#define SYSCON_CLKSET_PLL_X2FBD2_SHIFT 5
#define SYSCON_CHIPID_REV_MASK 0xF0000000
#define SYSCON_DEVICECFG_SWRST (1 << 31)
+#define SYSCON_SYSCFG_LASDO 0x00000020
+
/*
* 0x80930000 - 0x8093FFFF: Watchdog Timer
*/
/*
* 0x80950000 - 0x9000FFFF: Reserved
*/
+
+/*
+ * During low_level init we store memory layout in memory at specific location
+ */
+#define UBOOT_MEMORYCNF_BANK_SIZE 0x2000
+#define UBOOT_MEMORYCNF_BANK_MASK 0x2004
+#define UBOOT_MEMORYCNF_BANK_COUNT 0x2008
--- /dev/null
+#
+# (C) Copyright 2013
+# Sergey Kostanbaev <sergey.kostanbaev <at> fairwaves.ru>
+#
+# (C) Copyright 2003-2006
+# Wolfgang Denk, DENX Software Engineering, wd <at> denx.de.
+#
+# * SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y := edb93xx.o
--- /dev/null
+/*
+ * Board initialization for EP93xx
+ *
+ * Copyright (C) 2013
+ * Sergey Kostanbaev <sergey.kostanbaev <at> fairwaves.ru>
+ *
+ * Copyright (C) 2009
+ * Matthias Kaehlcke <matthias <at> kaehlcke.net>
+ *
+ * (C) Copyright 2002 2003
+ * Network Audio Technologies, Inc. <www.netaudiotech.com>
+ * Adam Bezanson <bezanson <at> netaudiotech.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+#include <netdev.h>
+#include <asm/io.h>
+#include <asm/arch/ep93xx.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * usb_div: 4, nbyp2: 1, pll2_en: 1
+ * pll2_x1: 368640000.000000, pll2_x2ip: 15360000.000000,
+ * pll2_x2: 384000000.000000, pll2_out: 192000000.000000
+ */
+#define CLKSET2_VAL (23 << SYSCON_CLKSET_PLL_X2IPD_SHIFT | \
+ 24 << SYSCON_CLKSET_PLL_X2FBD2_SHIFT | \
+ 24 << SYSCON_CLKSET_PLL_X1FBD1_SHIFT | \
+ 1 << SYSCON_CLKSET_PLL_PS_SHIFT | \
+ SYSCON_CLKSET2_PLL2_EN | \
+ SYSCON_CLKSET2_NBYP2 | \
+ 3 << SYSCON_CLKSET2_USB_DIV_SHIFT)
+
+#define SMC_BCR6_VALUE (2 << SMC_BCR_IDCY_SHIFT | 5 << SMC_BCR_WST1_SHIFT | \
+ SMC_BCR_BLE | 2 << SMC_BCR_WST2_SHIFT | \
+ 1 << SMC_BCR_MW_SHIFT)
+
+/* delay execution before timers are initialized */
+static inline void early_udelay(uint32_t usecs)
+{
+ /* loop takes 4 cycles at 5.0ns (fastest case, running at 200MHz) */
+ register uint32_t loops = (usecs * 1000) / 20;
+
+ __asm__ volatile ("1:\n"
+ "subs %0, %1, #1\n"
+ "bne 1b" : "=r" (loops) : "0" (loops));
+}
+
+#ifndef CONFIG_EP93XX_NO_FLASH_CFG
+static void flash_cfg(void)
+{
+ struct smc_regs *smc = (struct smc_regs *)SMC_BASE;
+
+ writel(SMC_BCR6_VALUE, &smc->bcr6);
+}
+#else
+#define flash_cfg()
+#endif
+
+int board_init(void)
+{
+ /*
+ * Setup PLL2, PPL1 has been set during lowlevel init
+ */
+ struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+ writel(CLKSET2_VAL, &syscon->clkset2);
+
+ /*
+ * the user's guide recommends to wait at least 1 ms for PLL2 to
+ * stabilize
+ */
+ early_udelay(1000);
+
+ /* Go to Async mode */
+ __asm__ volatile ("mrc p15, 0, r0, c1, c0, 0");
+ __asm__ volatile ("orr r0, r0, #0xc0000000");
+ __asm__ volatile ("mcr p15, 0, r0, c1, c0, 0");
+
+ icache_enable();
+
+#ifdef USE_920T_MMU
+ dcache_enable();
+#endif
+
+ /* Machine number, as defined in linux/arch/arm/tools/mach-types */
+ gd->bd->bi_arch_number = CONFIG_MACH_TYPE;
+
+ /* adress of boot parameters */
+ gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
+
+ /* We have a console */
+ gd->have_console = 1;
+
+ enable_interrupts();
+
+ flash_cfg();
+
+ green_led_on();
+ red_led_off();
+
+ return 0;
+}
+
+int board_early_init_f(void)
+{
+ /*
+ * set UARTBAUD bit to drive UARTs with 14.7456MHz instead of
+ * 14.7456/2 MHz
+ */
+ struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+ writel(SYSCON_PWRCNT_UART_BAUD, &syscon->pwrcnt);
+ return 0;
+}
+
+int board_eth_init(bd_t *bd)
+{
+ return ep93xx_eth_initialize(0, MAC_BASE);
+}
+
+static void dram_fill_bank_addr(unsigned dram_addr_mask, unsigned dram_bank_cnt,
+ unsigned dram_bank_base[CONFIG_NR_DRAM_BANKS])
+{
+ if (dram_bank_cnt == 1) {
+ dram_bank_base[0] = PHYS_SDRAM_1;
+ } else {
+ /* Table lookup for holes in address space. Maximum memory
+ * for the single SDCS may be up to 256Mb. We start scanning
+ * banks from 1Mb, so it could be up to 128 banks theoretically.
+ * We need at maximum 7 bits for the loockup, 8 slots is
+ * enough for the worst case.
+ */
+ unsigned tbl[8];
+ unsigned i = dram_bank_cnt / 2;
+ unsigned j = 0x00100000; /* 1 Mb */
+ unsigned *ptbl = tbl;
+ do {
+ while (!(dram_addr_mask & j)) {
+ j <<= 1;
+ }
+ *ptbl++ = j;
+ j <<= 1;
+ i >>= 1;
+ } while (i != 0);
+
+ for (i = dram_bank_cnt, j = 0;
+ (i != 0) && (j < CONFIG_NR_DRAM_BANKS); --i, ++j) {
+ unsigned addr = PHYS_SDRAM_1;
+ unsigned k;
+ unsigned bit;
+
+ for (k = 0, bit = 1; k < 8; k++, bit <<= 1) {
+ if (bit & j)
+ addr |= tbl[k];
+ }
+
+ dram_bank_base[j] = addr;
+ }
+ }
+}
+
+/* called in board_init_f (before relocation) */
+static unsigned dram_init_banksize_int(int print)
+{
+ /*
+ * Collect information of banks that has been filled during lowlevel
+ * initialization
+ */
+ unsigned i;
+ unsigned dram_bank_base[CONFIG_NR_DRAM_BANKS];
+ unsigned dram_total = 0;
+ unsigned dram_bank_size = *(unsigned *)
+ (PHYS_SDRAM_1 | UBOOT_MEMORYCNF_BANK_SIZE);
+ unsigned dram_addr_mask = *(unsigned *)
+ (PHYS_SDRAM_1 | UBOOT_MEMORYCNF_BANK_MASK);
+ unsigned dram_bank_cnt = *(unsigned *)
+ (PHYS_SDRAM_1 | UBOOT_MEMORYCNF_BANK_COUNT);
+
+ dram_fill_bank_addr(dram_addr_mask, dram_bank_cnt, dram_bank_base);
+
+ for (i = 0; i < dram_bank_cnt; i++) {
+ gd->bd->bi_dram[i].start = dram_bank_base[i];
+ gd->bd->bi_dram[i].size = dram_bank_size;
+ dram_total += dram_bank_size;
+ }
+ for (; i < CONFIG_NR_DRAM_BANKS; i++) {
+ gd->bd->bi_dram[i].start = 0;
+ gd->bd->bi_dram[i].size = 0;
+ }
+
+ if (print) {
+ printf("DRAM mask: %08x\n", dram_addr_mask);
+ printf("DRAM total %u banks:\n", dram_bank_cnt);
+ printf("bank base-address size\n");
+
+ if (dram_bank_cnt > CONFIG_NR_DRAM_BANKS) {
+ printf("WARNING! UBoot was configured for %u banks,\n"
+ "but %u has been found. "
+ "Supressing extra memory banks\n",
+ CONFIG_NR_DRAM_BANKS, dram_bank_cnt);
+ dram_bank_cnt = CONFIG_NR_DRAM_BANKS;
+ }
+
+ for (i = 0; i < dram_bank_cnt; i++) {
+ printf(" %u %08x %08x\n",
+ i, dram_bank_base[i], dram_bank_size);
+ }
+ printf(" ------------------------------------------\n"
+ "Total %9d\n\n",
+ dram_total);
+ }
+
+ return dram_total;
+}
+
+void dram_init_banksize(void)
+{
+ dram_init_banksize_int(0);
+}
+
+/* called in board_init_f (before relocation) */
+int dram_init(void)
+{
+ struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+ unsigned sec_id = readl(SECURITY_EXTENSIONID);
+ unsigned chip_id = readl(&syscon->chipid);
+
+ printf("CPU: Cirrus Logic ");
+ switch (sec_id & 0x000001FE) {
+ case 0x00000008:
+ printf("EP9301");
+ break;
+ case 0x00000004:
+ printf("EP9307");
+ break;
+ case 0x00000002:
+ printf("EP931x");
+ break;
+ case 0x00000000:
+ printf("EP9315");
+ break;
+ default:
+ printf("<unknown>");
+ break;
+ }
+
+ printf(" - Rev. ");
+ switch (chip_id & 0xF0000000) {
+ case 0x00000000:
+ printf("A");
+ break;
+ case 0x10000000:
+ printf("B");
+ break;
+ case 0x20000000:
+ printf("C");
+ break;
+ case 0x30000000:
+ printf("D0");
+ break;
+ case 0x40000000:
+ printf("D1");
+ break;
+ case 0x50000000:
+ printf("E0");
+ break;
+ case 0x60000000:
+ printf("E1");
+ break;
+ case 0x70000000:
+ printf("E2");
+ break;
+ default:
+ printf("?");
+ break;
+ }
+ printf(" (SecExtID=%.8x/ChipID=%.8x)\n", sec_id, chip_id);
+
+ gd->ram_size = dram_init_banksize_int(1);
+ return 0;
+}
+
+
+#ifdef CONFIG_EP93XX_SPI
+#include <spi.h>
+
+/*
+ * EGIO0-EGIPO7 -> port A
+ * EGIO8-EGIP15 -> port B
+ */
+
+static void ep93xx_set_epgio(unsigned num)
+{
+ struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE;
+ if (num < 8)
+ writel(readl(®s->padr) | (1<<num), ®s->padr);
+ else
+ writel(readl(®s->pbdr) | (1<<(num-8)), ®s->pbdr);
+}
+
+static void ep93xx_clear_epgio(unsigned num)
+{
+ struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE;
+ if (num < 8)
+ writel(readl(®s->padr) & (~(1<<num)), ®s->padr);
+ else
+ writel(readl(®s->pbdr) & (~(1<<(num-8))), ®s->pbdr);
+}
+
+static void ep93xx_dir_epgio_out(unsigned num)
+{
+ struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE;
+ if (num < 8)
+ writel(readl(®s->paddr) | (1<<num), ®s->paddr);
+ else
+ writel(readl(®s->pbddr) | (1<<(num-8)), ®s->pbddr);
+}
+
+int spi_cs_is_valid(unsigned int bus, unsigned int cs)
+{
+ if (bus == 0 && cs < 16)
+ return 1;
+
+ return 0;
+}
+
+void spi_cs_activate(struct spi_slave *slave)
+{
+ ep93xx_clear_epgio(slave->cs);
+}
+
+void spi_cs_deactivate(struct spi_slave *slave)
+{
+ ep93xx_set_epgio(slave->cs);
+}
+
+#ifdef CONFIG_MMC_SPI
+#include <mmc.h>
+
+#ifndef CONFIG_MMC_SPI_CS_EPGIO
+# define CONFIG_MMC_SPI_CS_EPGIO 4
+#endif
+
+#ifndef CONFIG_MMC_SPI_SPEED
+# define CONFIG_MMC_SPI_SPEED 25000000
+#endif
+
+#ifndef CONFIG_MMC_SPI_MODE
+# define CONFIG_MMC_SPI_MODE SPI_MODE_0
+#endif
+
+int board_mmc_init(bd_t *bis)
+{
+ struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE;
+
+ ep93xx_set_epgio(CONFIG_MMC_SPI_CS_EPGIO);
+ ep93xx_dir_epgio_out(CONFIG_MMC_SPI_CS_EPGIO);
+
+#ifdef CONFIG_MMC_SPI_POWER_EGPIO
+ ep93xx_dir_epgio_out(CONFIG_MMC_SPI_POWER_EGPIO);
+ ep93xx_set_epgio(CONFIG_MMC_SPI_POWER_EGPIO);
+#elif defined(CONFIG_MMC_SPI_NPOWER_EGPIO)
+ ep93xx_dir_epgio_out(CONFIG_MMC_SPI_NPOWER_EGPIO);
+ ep93xx_clear_epgio(CONFIG_MMC_SPI_NPOWER_EGPIO);
+#endif
+ struct mmc *mmc = mmc_spi_init(0, CONFIG_MMC_SPI_CS_EPGIO,
+ CONFIG_MMC_SPI_SPEED, CONFIG_MMC_SPI_MODE);
+
+ if (!mmc) {
+ printf("Failed to create MMC Device\n");
+ return 1;
+ }
+ mmc_init(mmc);
+ return 0;
+}
+
+
+#endif /* CONFIG_MMC_SPI */
+#endif /* CONFIG_EP93XX_SPI */
--- /dev/null
+/*
+ *
+ * Copyright (C) 2013
+ * Sergey Kostanbaev <sergey.kostanbaev <at> fairwaves.ru>
+ *
+ * Copyright (c) 2004-2008 Texas Instruments
+ *
+ * (C) Copyright 2002
+ * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SECTIONS
+{
+ . = 0x00000000;
+
+ . = ALIGN(4);
+ .text : {
+ *(.__image_copy_start)
+ arch/arm/cpu/arm920t/start.o (.text*)
+ . = 0x1000;
+
+ LONG(0x53555243)
+ *(.text*)
+ }
+
+ . = ALIGN(4);
+ .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
+
+ . = ALIGN(4);
+ .data : {
+ *(.data*)
+ }
+
+ . = ALIGN(4);
+
+ . = .;
+
+ . = ALIGN(4);
+ .u_boot_list : {
+ KEEP(*(SORT(.u_boot_list*)));
+ }
+
+ . = ALIGN(4);
+
+ .image_copy_end :
+ {
+ *(.__image_copy_end)
+ }
+
+ .rel_dyn_start :
+ {
+ *(.__rel_dyn_start)
+ }
+
+ .rel.dyn : {
+ *(.rel*)
+ }
+
+ .rel_dyn_end :
+ {
+ *(.__rel_dyn_end)
+ }
+
+ .end :
+ {
+ *(.__end)
+ }
+
+ _image_binary_end = .;
+
+ /*
+ * Deprecated: this MMU section is used by pxa at present but
+ * should not be used by new boards/CPUs.
+ */
+ . = ALIGN(4096);
+ .mmutable : {
+ *(.mmutable)
+ }
+
+/*
+ * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c
+ * __bss_base and __bss_limit are for linker only (overlay ordering)
+ */
+
+ .bss_start __rel_dyn_start (OVERLAY) : {
+ KEEP(*(.__bss_start));
+ __bss_base = .;
+ }
+
+ .bss __bss_base (OVERLAY) : {
+ *(.bss*)
+ . = ALIGN(4);
+ __bss_limit = .;
+ }
+
+ .bss_end __bss_limit (OVERLAY) : {
+ KEEP(*(.__bss_end));
+ }
+
+ .dynsym _image_binary_end : { *(.dynsym) }
+ .dynbss : { *(.dynbss) }
+ .dynstr : { *(.dynstr*) }
+ .dynamic : { *(.dynamic*) }
+ .plt : { *(.plt*) }
+ .interp : { *(.interp*) }
+ .gnu.hash : { *(.gnu.hash) }
+ .gnu : { *(.gnu*) }
+ .ARM.exidx : { *(.ARM.exidx*) }
+ .gnu.linkonce.armexidx : { *(.gnu.linkonce.armexidx.*) }
+}
Active arm arm920t ks8695 - - cm41xx - -
Active arm arm920t s3c24x0 mpl vcma9 VCMA9 - David Müller <d.mueller@elsoft.ch>
Active arm arm920t s3c24x0 samsung - smdk2410 - David Müller <d.mueller@elsoft.ch>
+Active arm arm920t ep93xx cirrus edb93xx edb9315a edb93xx:MK_edb9315a Sergey Kostanbaev <sergey.kostanbaev@fairwaves.ru>
Active arm arm926ejs - armltd integrator integratorap_cm926ejs integratorap:CM926EJ_S Linus Walleij <linus.walleij@linaro.org>
Active arm arm926ejs - armltd integrator integratorcp_cm926ejs integratorcp:CM924EJ_S Linus Walleij <linus.walleij@linaro.org>
Active arm arm926ejs armada100 Marvell - aspenite - Prafulla Wadaskar <prafulla@marvell.com>
# There are many options which enable SPI, so make this library available
obj-y += spi.o
+obj-$(CONFIG_EP93XX_SPI) += ep93xx_spi.o
obj-$(CONFIG_ALTERA_SPI) += altera_spi.o
obj-$(CONFIG_ANDES_SPI) += andes_spi.o
obj-$(CONFIG_ARMADA100_SPI) += armada100_spi.o
--- /dev/null
+/*
+ * SPI Driver for EP93xx
+ *
+ * Copyright (C) 2013 Sergey Kostanabev <sergey.kostanbaev <at> fairwaves.ru>
+ *
+ * Inspired form linux kernel driver and atmel uboot driver
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <spi.h>
+#include <malloc.h>
+
+#include <asm/io.h>
+
+#include <asm/arch/ep93xx.h>
+
+
+#define BIT(x) (1<<(x))
+#define SSPBASE SPI_BASE
+
+#define SSPCR0 0x0000
+#define SSPCR0_MODE_SHIFT 6
+#define SSPCR0_SCR_SHIFT 8
+#define SSPCR0_SPH BIT(7)
+#define SSPCR0_SPO BIT(6)
+#define SSPCR0_FRF_SPI 0
+#define SSPCR0_DSS_8BIT 7
+
+#define SSPCR1 0x0004
+#define SSPCR1_RIE BIT(0)
+#define SSPCR1_TIE BIT(1)
+#define SSPCR1_RORIE BIT(2)
+#define SSPCR1_LBM BIT(3)
+#define SSPCR1_SSE BIT(4)
+#define SSPCR1_MS BIT(5)
+#define SSPCR1_SOD BIT(6)
+
+#define SSPDR 0x0008
+
+#define SSPSR 0x000c
+#define SSPSR_TFE BIT(0)
+#define SSPSR_TNF BIT(1)
+#define SSPSR_RNE BIT(2)
+#define SSPSR_RFF BIT(3)
+#define SSPSR_BSY BIT(4)
+#define SSPCPSR 0x0010
+
+#define SSPIIR 0x0014
+#define SSPIIR_RIS BIT(0)
+#define SSPIIR_TIS BIT(1)
+#define SSPIIR_RORIS BIT(2)
+#define SSPICR SSPIIR
+
+#define SSPCLOCK 14745600
+#define SSP_MAX_RATE (SSPCLOCK / 2)
+#define SSP_MIN_RATE (SSPCLOCK / (254 * 256))
+
+/* timeout in milliseconds */
+#define SPI_TIMEOUT 5
+/* maximum depth of RX/TX FIFO */
+#define SPI_FIFO_SIZE 8
+
+struct ep93xx_spi_slave {
+ struct spi_slave slave;
+
+ unsigned sspcr0;
+ unsigned sspcpsr;
+};
+
+static inline struct ep93xx_spi_slave *to_ep93xx_spi(struct spi_slave *slave)
+{
+ return container_of(slave, struct ep93xx_spi_slave, slave);
+}
+
+void spi_init()
+{
+}
+
+static inline void ep93xx_spi_write_u8(u16 reg, u8 value)
+{
+ writel(value, (unsigned int *)(SSPBASE + reg));
+}
+
+static inline u8 ep93xx_spi_read_u8(u16 reg)
+{
+ return readl((unsigned int *)(SSPBASE + reg));
+}
+
+static inline void ep93xx_spi_write_u16(u16 reg, u16 value)
+{
+ writel(value, (unsigned int *)(SSPBASE + reg));
+}
+
+static inline u16 ep93xx_spi_read_u16(u16 reg)
+{
+ return (u16)readl((unsigned int *)(SSPBASE + reg));
+}
+
+static int ep93xx_spi_init_hw(unsigned int rate, unsigned int mode,
+ struct ep93xx_spi_slave *slave)
+{
+ unsigned cpsr, scr;
+
+ if (rate > SSP_MAX_RATE)
+ rate = SSP_MAX_RATE;
+
+ if (rate < SSP_MIN_RATE)
+ return -1;
+
+ /* Calculate divisors so that we can get speed according the
+ * following formula:
+ * rate = spi_clock_rate / (cpsr * (1 + scr))
+ *
+ * cpsr must be even number and starts from 2, scr can be any number
+ * between 0 and 255.
+ */
+ for (cpsr = 2; cpsr <= 254; cpsr += 2) {
+ for (scr = 0; scr <= 255; scr++) {
+ if ((SSPCLOCK / (cpsr * (scr + 1))) <= rate) {
+ /* Set CHPA and CPOL, SPI format and 8bit */
+ unsigned sspcr0 = (scr << SSPCR0_SCR_SHIFT) |
+ SSPCR0_FRF_SPI | SSPCR0_DSS_8BIT;
+ if (mode & SPI_CPHA)
+ sspcr0 |= SSPCR0_SPH;
+ if (mode & SPI_CPOL)
+ sspcr0 |= SSPCR0_SPO;
+
+ slave->sspcr0 = sspcr0;
+ slave->sspcpsr = cpsr;
+ return 0;
+ }
+ }
+ }
+
+ return -1;
+}
+
+void spi_set_speed(struct spi_slave *slave, unsigned int hz)
+{
+ struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
+
+ unsigned int mode = 0;
+ if (as->sspcr0 & SSPCR0_SPH)
+ mode |= SPI_CPHA;
+ if (as->sspcr0 & SSPCR0_SPO)
+ mode |= SPI_CPOL;
+
+ ep93xx_spi_init_hw(hz, mode, as);
+}
+
+struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
+ unsigned int max_hz, unsigned int mode)
+{
+ struct ep93xx_spi_slave *as;
+
+ if (!spi_cs_is_valid(bus, cs))
+ return NULL;
+
+ as = spi_alloc_slave(struct ep93xx_spi_slave, bus, cs);
+ if (!as)
+ return NULL;
+
+ if (ep93xx_spi_init_hw(max_hz, mode, as)) {
+ free(as);
+ return NULL;
+ }
+
+ return &as->slave;
+}
+
+void spi_free_slave(struct spi_slave *slave)
+{
+ struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
+
+ free(as);
+}
+
+int spi_claim_bus(struct spi_slave *slave)
+{
+ struct ep93xx_spi_slave *as = to_ep93xx_spi(slave);
+
+ /* Enable the SPI hardware */
+ ep93xx_spi_write_u8(SSPCR1, SSPCR1_SSE);
+
+
+ ep93xx_spi_write_u8(SSPCPSR, as->sspcpsr);
+ ep93xx_spi_write_u16(SSPCR0, as->sspcr0);
+
+ debug("Select CS:%d SSPCPSR=%02x SSPCR0=%04x\n",
+ slave->cs, as->sspcpsr, as->sspcr0);
+ return 0;
+}
+
+void spi_release_bus(struct spi_slave *slave)
+{
+ /* Disable the SPI hardware */
+ ep93xx_spi_write_u8(SSPCR1, 0);
+}
+
+int spi_xfer(struct spi_slave *slave, unsigned int bitlen,
+ const void *dout, void *din, unsigned long flags)
+{
+ unsigned int len_tx;
+ unsigned int len_rx;
+ unsigned int len;
+ u32 status;
+ const u8 *txp = dout;
+ u8 *rxp = din;
+ u8 value;
+
+ debug("spi_xfer: slave %u:%u dout %p din %p bitlen %u\n",
+ slave->bus, slave->cs, (uint *)dout, (uint *)din, bitlen);
+
+
+ if (bitlen == 0)
+ /* Finish any previously submitted transfers */
+ goto out;
+
+ if (bitlen % 8) {
+ /* Errors always terminate an ongoing transfer */
+ flags |= SPI_XFER_END;
+ goto out;
+ }
+
+ len = bitlen / 8;
+
+
+ if (flags & SPI_XFER_BEGIN) {
+ /* Empty RX FIFO */
+ while ((ep93xx_spi_read_u8(SSPSR) & SSPSR_RNE))
+ ep93xx_spi_read_u8(SSPDR);
+
+ spi_cs_activate(slave);
+ }
+
+ for (len_tx = 0, len_rx = 0; len_rx < len; ) {
+ status = ep93xx_spi_read_u8(SSPSR);
+
+ if ((len_tx < len) && (status & SSPSR_TNF)) {
+ if (txp)
+ value = *txp++;
+ else
+ value = 0xff;
+
+ ep93xx_spi_write_u8(SSPDR, value);
+ len_tx++;
+ }
+
+ if (status & SSPSR_RNE) {
+ value = ep93xx_spi_read_u8(SSPDR);
+
+ if (rxp)
+ *rxp++ = value;
+ len_rx++;
+ }
+ }
+
+out:
+ if (flags & SPI_XFER_END) {
+ /*
+ * Wait until the transfer is completely done before
+ * we deactivate CS.
+ */
+ do {
+ status = ep93xx_spi_read_u8(SSPSR);
+ } while (status & SSPSR_BSY);
+
+ spi_cs_deactivate(slave);
+ }
+
+ return 0;
+}
obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
obj-$(CONFIG_USB_SL811HS) += sl811-hcd.o
obj-$(CONFIG_USB_OHCI_S3C24XX) += ohci-s3c24xx.o
+obj-$(CONFIG_USB_OHCI_EP93XX) += ohci-ep93xx.o
# echi
obj-$(CONFIG_USB_EHCI) += ehci-hcd.o
--- /dev/null
+/*
+ * (C) Copyright 2013
+ * Sergey Kostanbaev < sergey.kostanbaev <at> fairwaves.ru >
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+
+#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
+#include <asm/io.h>
+#include <asm/arch/ep93xx.h>
+
+int usb_cpu_init(void)
+{
+ struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+ unsigned long pwr = readl(&syscon->pwrcnt);
+ writel(pwr | SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
+
+ return 0;
+}
+
+int usb_cpu_stop(void)
+{
+ struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+ unsigned long pwr = readl(&syscon->pwrcnt);
+ writel(pwr & ~SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
+
+ return 0;
+}
+
+int usb_cpu_init_fail(void)
+{
+ return usb_cpu_stop();
+}
+
+#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */
--- /dev/null
+/*
+ * U-boot - Configuration file for Cirrus Logic EDB93xx boards
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#ifdef CONFIG_MK_edb9301
+#define CONFIG_EDB9301
+#elif defined(CONFIG_MK_edb9302)
+#define CONFIG_EDB9302
+#elif defined(CONFIG_MK_edb9302a)
+#define CONFIG_EDB9302A
+#elif defined(CONFIG_MK_edb9307)
+#define CONFIG_EDB9307
+#elif defined(CONFIG_MK_edb9307a)
+#define CONFIG_EDB9307A
+#elif defined(CONFIG_MK_edb9312)
+#define CONFIG_EDB9312
+#elif defined(CONFIG_MK_edb9315)
+#define CONFIG_EDB9315
+#elif defined(CONFIG_MK_edb9315a)
+#define CONFIG_EDB9315A
+#else
+#error "no board defined"
+#endif
+
+/* Initial environment and monitor configuration options. */
+#define CONFIG_BOOTDELAY 2
+#define CONFIG_CMDLINE_TAG 1
+#define CONFIG_INITRD_TAG 1
+#define CONFIG_SETUP_MEMORY_TAGS 1
+#define CONFIG_BOOTARGS "root=/dev/nfs console=ttyAM0,115200 ip=dhcp"
+#define CONFIG_BOOTFILE "edb93xx.img"
+
+#define CONFIG_SYS_HUSH_PARSER 1
+#define CONFIG_SYS_PROMPT_HUSH_PS2 "> "
+
+
+#define CONFIG_SYS_LDSCRIPT "board/cirrus/edb93xx/u-boot.lds"
+
+
+#ifdef CONFIG_EDB9301
+#define CONFIG_EP9301
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9301
+#define CONFIG_SYS_PROMPT "EDB9301> "
+#define CONFIG_ENV_SECT_SIZE 0x00020000
+#elif defined(CONFIG_EDB9302)
+#define CONFIG_EP9302
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9302
+#define CONFIG_SYS_PROMPT "EDB9302> "
+#define CONFIG_ENV_SECT_SIZE 0x00020000
+#elif defined(CONFIG_EDB9302A)
+#define CONFIG_EP9302
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9302A
+#define CONFIG_SYS_PROMPT "EDB9302A> "
+#define CONFIG_ENV_SECT_SIZE 0x00020000
+#elif defined(CONFIG_EDB9307)
+#define CONFIG_EP9307
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9307
+#define CONFIG_SYS_PROMPT "EDB9307> "
+#define CONFIG_ENV_SECT_SIZE 0x00040000
+#elif defined(CONFIG_EDB9307A)
+#define CONFIG_EP9307
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9307A
+#define CONFIG_SYS_PROMPT "EDB9307A> "
+#define CONFIG_ENV_SECT_SIZE 0x00020000
+#elif defined(CONFIG_EDB9312)
+#define CONFIG_EP9312
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9312
+#define CONFIG_SYS_PROMPT "EDB9312> "
+#define CONFIG_ENV_SECT_SIZE 0x00040000
+#elif defined(CONFIG_EDB9315)
+#define CONFIG_EP9315
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9315
+#define CONFIG_SYS_PROMPT "EDB9315> "
+#define CONFIG_ENV_SECT_SIZE 0x00040000
+#elif defined(CONFIG_EDB9315A)
+#define CONFIG_EP9315
+#define CONFIG_MACH_TYPE MACH_TYPE_EDB9315A
+#define CONFIG_SYS_PROMPT "EDB9315A> "
+#define CONFIG_ENV_SECT_SIZE 0x00020000
+#else
+#error "no board defined"
+#endif
+
+/* High-level configuration options */
+#define CONFIG_ARM920T 1 /* This is an ARM920T core... */
+#define CONFIG_EP93XX 1 /* in a Cirrus Logic 93xx SoC */
+
+#define CONFIG_SYS_CLK_FREQ 14745600 /* EP93xx has a 14.7456 clock */
+#define CONFIG_SYS_HZ 1000 /* decr freq: 1 ms ticks */
+#undef CONFIG_USE_IRQ /* Don't need IRQ/FIQ */
+
+/* Monitor configuration */
+#include <config_cmd_default.h>
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_SETGETDCR
+#undef CONFIG_CMD_XIMG
+
+#undef CONFIG_CMD_DATE
+#define CONFIG_CMD_DHCP
+#define CONFIG_CMD_JFFS2
+
+#define CONFIG_SYS_LONGHELP /* Enable "long" help in mon */
+#define CONFIG_SYS_CBSIZE 1024 /* Console I/O buffer size */
+/* Print buffer size */
+#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16)
+/* Boot argument buffer size */
+#define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE
+#define CONFIG_SYS_MAXARGS 16 /* Max number of command args */
+
+/* Serial port hardware configuration */
+#define CONFIG_PL010_SERIAL
+#define CONFIG_CONS_INDEX 0
+#define CONFIG_BAUDRATE 115200
+#define CONFIG_SYS_BAUDRATE_TABLE {9600, 19200, 38400, 57600, \
+ 115200, 230400}
+#define CONFIG_SYS_SERIAL0 0x808C0000
+#define CONFIG_SYS_SERIAL1 0x808D0000
+/*#define CONFIG_PL01x_PORTS {(void *)CONFIG_SYS_SERIAL0, \
+ (void *)CONFIG_SYS_SERIAL1} */
+
+#define CONFIG_PL01x_PORTS {(void *)CONFIG_SYS_SERIAL0}
+
+/* Status LED */
+#define CONFIG_STATUS_LED 1 /* Status LED enabled */
+#define CONFIG_BOARD_SPECIFIC_LED 1
+#define STATUS_LED_GREEN 0
+#define STATUS_LED_RED 1
+/* Green */
+#define STATUS_LED_BIT STATUS_LED_GREEN
+#define STATUS_LED_STATE STATUS_LED_ON
+#define STATUS_LED_PERIOD (CONFIG_SYS_HZ / 2)
+/* Red */
+#define STATUS_LED_BIT1 STATUS_LED_RED
+#define STATUS_LED_STATE1 STATUS_LED_OFF
+#define STATUS_LED_PERIOD1 (CONFIG_SYS_HZ / 2)
+/* Optional value */
+#define STATUS_LED_BOOT STATUS_LED_BIT
+
+/* Network hardware configuration */
+#define CONFIG_DRIVER_EP93XX_MAC
+#define CONFIG_MII_SUPPRESS_PREAMBLE
+#define CONFIG_MII
+#define CONFIG_PHY_ADDR 1
+#define CONFIG_NET_MULTI
+#undef CONFIG_NETCONSOLE
+
+/* SDRAM configuration */
+#if defined(CONFIG_EDB9301) || defined(CONFIG_EDB9302) || \
+ defined(CONFIG_EDB9307) || defined CONFIG_EDB9312 || \
+ defined(CONFIG_EDB9315)
+/*
+ * EDB9301/2 has 4 banks of SDRAM consisting of 1x Samsung K4S561632E-TC75
+ * 256 Mbit SDRAM on a 16-bit data bus, for a total of 32MB of SDRAM. We set
+ * the SROMLL bit on the processor, resulting in this non-contiguous memory map.
+ *
+ * The EDB9307, EDB9312, and EDB9315 have 2 banks of SDRAM consisting of
+ * 2x Samsung K4S561632E-TC75 256 Mbit on a 32-bit data bus, for a total of
+ * 64 MB of SDRAM.
+ */
+
+#define CONFIG_EDB93XX_SDCS3
+
+#elif defined(CONFIG_EDB9302A) || \
+ defined(CONFIG_EDB9307A) || defined(CONFIG_EDB9315A)
+/*
+ * EDB9302a has 4 banks of SDRAM consisting of 1x Samsung K4S561632E-TC75
+ * 256 Mbit SDRAM on a 16-bit data bus, for a total of 32MB of SDRAM. We set
+ * the SROMLL bit on the processor, resulting in this non-contiguous memory map.
+ *
+ * The EDB9307A and EDB9315A have 2 banks of SDRAM consisting of 2x Samsung
+ * K4S561632E-TC75 256 Mbit on a 32-bit data bus, for a total of 64 MB of SDRAM.
+ */
+#define CONFIG_EDB93XX_SDCS0
+
+#else
+#error "no SDCS configuration for this board"
+#endif
+
+
+#if defined(CONFIG_EDB93XX_SDCS3)
+#define CONFIG_SYS_LOAD_ADDR 0x01000000 /* Default load address */
+#define PHYS_SDRAM_1 0x00000000
+#elif defined(CONFIG_EDB93XX_SDCS0)
+#define CONFIG_SYS_LOAD_ADDR 0xc1000000 /* Default load address */
+#define PHYS_SDRAM_1 0xc0000000
+#endif
+
+#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
+#define CONFIG_NR_DRAM_BANKS 8
+
+#define CONFIG_SYS_INIT_SP_ADDR \
+ (CONFIG_SYS_SDRAM_BASE + 32*1024 - GENERATED_GBL_DATA_SIZE)
+
+
+/* Must match kernel config */
+#define LINUX_BOOT_PARAM_ADDR (PHYS_SDRAM_1 + 0x100)
+
+/* Run-time memory allocatons */
+#define CONFIG_SYS_GBL_DATA_SIZE 128
+#define CONFIG_STACKSIZE (128 * 1024)
+
+#if defined(CONFIG_USE_IRQ)
+#define CONFIG_STACKSIZE_IRQ (4 * 1024)
+#define CONFIG_STACKSIZE_FIQ (4 * 1024)
+#endif
+
+#define CONFIG_SYS_MALLOC_LEN (512 * 1024)
+
+/* -----------------------------------------------------------------------------
+ * FLASH and environment organization
+ *
+ * The EDB9301, EDB9302(a), EDB9307a, EDB9315a have 1 bank of flash memory at
+ * 0x60000000 consisting of 1x Intel TE28F128J3C-150 128 Mbit flash on a 16-bit
+ * data bus, for a total of 16 MB of CFI-compatible flash.
+ *
+ * The EDB9307, EDB9312, and EDB9315 have 1 bank of flash memory at
+ * 0x60000000 consisting of 2x Micron MT28F128J3-12 128 Mbit flash on a 32-bit
+ * data bus, for a total of 32 MB of CFI-compatible flash.
+ *
+ *
+ * EDB9301/02(a)7a/15a EDB9307/12/15
+ * 0x60000000 - 0x0003FFFF u-boot u-boot
+ * 0x60040000 - 0x0005FFFF environment #1 environment #1
+ * 0x60060000 - 0x0007FFFF environment #2 environment #1 (continued)
+ * 0x60080000 - 0x0009FFFF unused environment #2
+ * 0x600A0000 - 0x000BFFFF unused environment #2 (continued)
+ * 0x600C0000 - 0x00FFFFFF unused unused
+ * 0x61000000 - 0x01FFFFFF not present unused
+ */
+#define CONFIG_SYS_FLASH_CFI
+#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE
+
+
+#define CONFIG_SYS_FLASH_PROTECTION
+#define CONFIG_FLASH_CFI_DRIVER
+#define CONFIG_SYS_MAX_FLASH_BANKS 1
+#define CONFIG_SYS_MAX_FLASH_SECT (256+8)
+
+#define CONFIG_SYS_TEXT_BASE 0x60000000
+#define PHYS_FLASH_1 CONFIG_SYS_TEXT_BASE
+#define CONFIG_SYS_FLASH_BASE CONFIG_SYS_TEXT_BASE
+
+#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
+#define CONFIG_SYS_MONITOR_LEN (256 * 1024)
+
+#define CONFIG_ENV_OVERWRITE /* Vendor params unprotected */
+#define CONFIG_ENV_IS_IN_FLASH
+
+#define CONFIG_ENV_ADDR 0x60040000
+#define CONFIG_ENV_ADDR_REDUND (CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE)
+
+#define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE
+#define CONFIG_ENV_SIZE_REDUND CONFIG_ENV_SIZE
+
+/* Define to enable MMC on SPI support */
+/* #define CONFIG_EP93XX_SPI_MMC */
+
+#ifdef CONFIG_EP93XX_SPI_MMC
+#define CONFIG_EP93XX_SPI
+#define CONFIG_MMC
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC_SPI
+#define CONFIG_CMD_MMC
+#define CONFIG_MMC_SPI_NPOWER_EGPIO 9
+#endif
+
+#define CONFIG_USB_STORAGE
+#define CONFIG_USB_OHCI_NEW
+#define CONFIG_USB_OHCI_EP93XX
+#define CONFIG_SYS_USB_OHCI_CPU_INIT
+#define CONFIG_SYS_USB_OHCI_MAX_ROOT_PORTS 3
+#define CONFIG_SYS_USB_OHCI_SLOT_NAME "ep93xx-ohci"
+#define CONFIG_SYS_USB_OHCI_REGS_BASE 0x80020000
+
+#define CONFIG_CMD_EXT2
+#define CONFIG_CMD_EXT4
+#define CONFIG_CMD_FAT
+#define CONFIG_CMD_USB
+
+#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_CMD_BOOTZ
+
+/* Define to disable flash configuration*/
+/* #define CONFIG_EP93XX_NO_FLASH_CFG */
+
+/* Define this for indusrial rated chips */
+/* #define CONFIG_EDB93XX_INDUSTRIAL */
+
+#endif /* !defined (__CONFIG_H) */
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