This patch returns back support for old ep93xx processors family

Signed-off-by: Sergey Kostanbaev sergey.kostanbaev@gmail.com Cc: albert.u.boot@aribaud.net --- Changes for v5: - Fix license that dropped during merge - Better formatting - Update loader script

Changes for v4: - Update patch to cleanly apply

Changes for v3: - Update makefiles to the new style

Changes for v2: - Replace constants in lowlevel_init.S to defines - Add more coments in non-trivial places in lowlevel_init.S - Get rid of ep93xx_sdram_find_bank in lowlevel_init.S and move it to dram_fill_bank_addr in edb93xx.c. This procedure may be executed later at any time, so no need to be in lowlevel

arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S | 465 ++++++++++++++++++++++++++-- arch/arm/include/asm/arch-ep93xx/ep93xx.h | 86 +++++ board/cirrus/edb93xx/Makefile | 37 +++ board/cirrus/edb93xx/edb93xx.c | 382 +++++++++++++++++++++++ board/cirrus/edb93xx/u-boot.lds | 115 +++++++ boards.cfg | 1 + drivers/spi/Makefile | 1 + drivers/spi/ep93xx_spi.c | 274 ++++++++++++++++ drivers/usb/host/Makefile | 1 + drivers/usb/host/ohci-ep93xx.c | 38 +++ include/configs/edb93xx.h | 292 +++++++++++++++++ 11 files changed, 1654 insertions(+), 29 deletions(-) create mode 100644 board/cirrus/edb93xx/Makefile create mode 100644 board/cirrus/edb93xx/edb93xx.c create mode 100644 board/cirrus/edb93xx/u-boot.lds create mode 100644 drivers/spi/ep93xx_spi.c create mode 100644 drivers/usb/host/ohci-ep93xx.c create mode 100644 include/configs/edb93xx.h

diff --git a/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S b/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S index bf2fa2a..3ac0f88 100644 --- a/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S +++ b/arch/arm/cpu/arm920t/ep93xx/lowlevel_init.S @@ -1,49 +1,458 @@ /* * 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 diff --git a/arch/arm/include/asm/arch-ep93xx/ep93xx.h b/arch/arm/include/asm/arch-ep93xx/ep93xx.h index 9e7f2f3..71aa601 100644 --- a/arch/arm/include/asm/arch-ep93xx/ep93xx.h +++ b/arch/arm/include/asm/arch-ep93xx/ep93xx.h @@ -1,6 +1,9 @@ /* * Cirrus Logic EP93xx register definitions. * + * Copyright (C) 2013 + * Sergey Kostanbaev <sergey.kostanbaev <at> fairwaves.ru> + * * Copyright (C) 2009 * Matthias Kaehlcke matthias@kaehlcke.net * @@ -287,6 +290,20 @@ struct sdram_regs { #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) @@ -295,6 +312,43 @@ struct sdram_regs { #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 */ @@ -324,6 +378,13 @@ struct smc_regs { }; #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) @@ -445,6 +506,14 @@ struct gpio_regs { }; #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 */ @@ -519,6 +588,9 @@ struct gpio_regs { #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; @@ -553,7 +625,11 @@ struct syscon_regs { #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 @@ -571,6 +647,8 @@ struct syscon_regs { #define SYSCON_CHIPID_REV_MASK 0xF0000000 #define SYSCON_DEVICECFG_SWRST (1 << 31)

+#define SYSCON_SYSCFG_LASDO 0x00000020 + /* * 0x80930000 - 0x8093FFFF: Watchdog Timer */ @@ -580,3 +658,10 @@ struct syscon_regs { /* * 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 diff --git a/board/cirrus/edb93xx/Makefile b/board/cirrus/edb93xx/Makefile new file mode 100644 index 0000000..d03c498 --- /dev/null +++ b/board/cirrus/edb93xx/Makefile @@ -0,0 +1,11 @@ +# +# (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 diff --git a/board/cirrus/edb93xx/edb93xx.c b/board/cirrus/edb93xx/edb93xx.c new file mode 100644 index 0000000..8963d3a --- /dev/null +++ b/board/cirrus/edb93xx/edb93xx.c @@ -0,0 +1,382 @@ +/* + * 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(&regs->padr) | (1<<num), &regs->padr); + else + writel(readl(&regs->pbdr) | (1<<(num-8)), &regs->pbdr); +} + +static void ep93xx_clear_epgio(unsigned num) +{ + struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE; + if (num < 8) + writel(readl(&regs->padr) & (~(1<<num)), &regs->padr); + else + writel(readl(&regs->pbdr) & (~(1<<(num-8))), &regs->pbdr); +} + +static void ep93xx_dir_epgio_out(unsigned num) +{ + struct gpio_regs *regs = (struct gpio_regs *)GPIO_BASE; + if (num < 8) + writel(readl(&regs->paddr) | (1<<num), &regs->paddr); + else + writel(readl(&regs->pbddr) | (1<<(num-8)), &regs->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 */ diff --git a/board/cirrus/edb93xx/u-boot.lds b/board/cirrus/edb93xx/u-boot.lds new file mode 100644 index 0000000..e61aa36 --- /dev/null +++ b/board/cirrus/edb93xx/u-boot.lds @@ -0,0 +1,115 @@ +/* + * + * 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.*) } +} diff --git a/boards.cfg b/boards.cfg index 2128996..4c5f1b8 100644 --- a/boards.cfg +++ b/boards.cfg @@ -74,6 +74,7 @@ Active arm arm920t ks8695 - - 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 diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index ed4ecd7..c5d6c6a 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -8,6 +8,7 @@ # 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 diff --git a/drivers/spi/ep93xx_spi.c b/drivers/spi/ep93xx_spi.c new file mode 100644 index 0000000..235557e --- /dev/null +++ b/drivers/spi/ep93xx_spi.c @@ -0,0 +1,274 @@ +/* + * 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; +} diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 1417028..5cab359 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o obj-$(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 diff --git a/drivers/usb/host/ohci-ep93xx.c b/drivers/usb/host/ohci-ep93xx.c new file mode 100644 index 0000000..8fb4aba --- /dev/null +++ b/drivers/usb/host/ohci-ep93xx.c @@ -0,0 +1,38 @@ +/* + * (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) */ diff --git a/include/configs/edb93xx.h b/include/configs/edb93xx.h new file mode 100644 index 0000000..37bdcc0 --- /dev/null +++ b/include/configs/edb93xx.h @@ -0,0 +1,292 @@ +/* + * 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) */