OpenWrt – Rev 1
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From bd36739e77669e8df45c38f6acfe2cea511534d9 Mon Sep 17 00:00:00 2001
From: Xiangfu <xiangfu@openmobilefree.net>
Date: Wed, 10 Oct 2012 18:19:41 +0800
Subject: [PATCH 3/6] add mmc support
---
arch/mips/include/asm/jz4740.h | 166 ++++++
board/qi/qi_lb60/qi_lb60.c | 9 +-
drivers/mmc/Makefile | 1 +
drivers/mmc/jz_mmc.c | 1179 ++++++++++++++++++++++++++++++++++++++++
drivers/mmc/jz_mmc.h | 176 ++++++
include/configs/qi_lb60.h | 9 +
include/mmc.h | 40 ++
7 files changed, 1578 insertions(+), 2 deletions(-)
create mode 100644 drivers/mmc/jz_mmc.c
create mode 100644 drivers/mmc/jz_mmc.h
diff --git a/arch/mips/include/asm/jz4740.h b/arch/mips/include/asm/jz4740.h
index 7a7cfff..68287fb 100644
--- a/arch/mips/include/asm/jz4740.h
+++ b/arch/mips/include/asm/jz4740.h
@@ -1146,5 +1146,171 @@ extern void sdram_init(void);
extern void calc_clocks(void);
extern void rtc_init(void);
+/*************************************************************************
+ * MSC
+ *************************************************************************/
+#define REG8(addr) *((volatile u8 *)(addr))
+#define REG16(addr) *((volatile u16 *)(addr))
+#define REG32(addr) *((volatile u32 *)(addr))
+
+#define CPM_BASE 0xB0000000
+#define CPM_CPCCR (CPM_BASE+0x00)
+#define CPM_MSCCDR (CPM_BASE+0x68)
+#define REG_CPM_MSCCDR REG32(CPM_MSCCDR)
+#define REG_CPM_CPCCR REG32(CPM_CPCCR)
+
+#define MSC_BASE 0xB0021000
+
+#define MSC_STRPCL (MSC_BASE + 0x000)
+#define MSC_STAT (MSC_BASE + 0x004)
+#define MSC_CLKRT (MSC_BASE + 0x008)
+#define MSC_CMDAT (MSC_BASE + 0x00C)
+#define MSC_RESTO (MSC_BASE + 0x010)
+#define MSC_RDTO (MSC_BASE + 0x014)
+#define MSC_BLKLEN (MSC_BASE + 0x018)
+#define MSC_NOB (MSC_BASE + 0x01C)
+#define MSC_SNOB (MSC_BASE + 0x020)
+#define MSC_IMASK (MSC_BASE + 0x024)
+#define MSC_IREG (MSC_BASE + 0x028)
+#define MSC_CMD (MSC_BASE + 0x02C)
+#define MSC_ARG (MSC_BASE + 0x030)
+#define MSC_RES (MSC_BASE + 0x034)
+#define MSC_RXFIFO (MSC_BASE + 0x038)
+#define MSC_TXFIFO (MSC_BASE + 0x03C)
+
+#define REG_MSC_STRPCL REG16(MSC_STRPCL)
+#define REG_MSC_STAT REG32(MSC_STAT)
+#define REG_MSC_CLKRT REG16(MSC_CLKRT)
+#define REG_MSC_CMDAT REG32(MSC_CMDAT)
+#define REG_MSC_RESTO REG16(MSC_RESTO)
+#define REG_MSC_RDTO REG16(MSC_RDTO)
+#define REG_MSC_BLKLEN REG16(MSC_BLKLEN)
+#define REG_MSC_NOB REG16(MSC_NOB)
+#define REG_MSC_SNOB REG16(MSC_SNOB)
+#define REG_MSC_IMASK REG16(MSC_IMASK)
+#define REG_MSC_IREG REG16(MSC_IREG)
+#define REG_MSC_CMD REG8(MSC_CMD)
+#define REG_MSC_ARG REG32(MSC_ARG)
+#define REG_MSC_RES REG16(MSC_RES)
+#define REG_MSC_RXFIFO REG32(MSC_RXFIFO)
+#define REG_MSC_TXFIFO REG32(MSC_TXFIFO)
+
+/* MSC Clock and Control Register (MSC_STRPCL) */
+
+#define MSC_STRPCL_EXIT_MULTIPLE (1 << 7)
+#define MSC_STRPCL_EXIT_TRANSFER (1 << 6)
+#define MSC_STRPCL_START_READWAIT (1 << 5)
+#define MSC_STRPCL_STOP_READWAIT (1 << 4)
+#define MSC_STRPCL_RESET (1 << 3)
+#define MSC_STRPCL_START_OP (1 << 2)
+#define MSC_STRPCL_CLOCK_CONTROL_BIT 0
+#define MSC_STRPCL_CLOCK_CONTROL_MASK (0x3 << MSC_STRPCL_CLOCK_CONTROL_BIT)
+ #define MSC_STRPCL_CLOCK_CONTROL_STOP (0x1 << MSC_STRPCL_CLOCK_CONTROL_BIT) /* Stop MMC/SD clock */
+ #define MSC_STRPCL_CLOCK_CONTROL_START (0x2 << MSC_STRPCL_CLOCK_CONTROL_BIT) /* Start MMC/SD clock */
+
+/* MSC Status Register (MSC_STAT) */
+
+#define MSC_STAT_IS_RESETTING (1 << 15)
+#define MSC_STAT_SDIO_INT_ACTIVE (1 << 14)
+#define MSC_STAT_PRG_DONE (1 << 13)
+#define MSC_STAT_DATA_TRAN_DONE (1 << 12)
+#define MSC_STAT_END_CMD_RES (1 << 11)
+#define MSC_STAT_DATA_FIFO_AFULL (1 << 10)
+#define MSC_STAT_IS_READWAIT (1 << 9)
+#define MSC_STAT_CLK_EN (1 << 8)
+#define MSC_STAT_DATA_FIFO_FULL (1 << 7)
+#define MSC_STAT_DATA_FIFO_EMPTY (1 << 6)
+#define MSC_STAT_CRC_RES_ERR (1 << 5)
+#define MSC_STAT_CRC_READ_ERROR (1 << 4)
+#define MSC_STAT_CRC_WRITE_ERROR_BIT 2
+#define MSC_STAT_CRC_WRITE_ERROR_MASK (0x3 << MSC_STAT_CRC_WRITE_ERROR_BIT)
+ #define MSC_STAT_CRC_WRITE_ERROR_NO (0 << MSC_STAT_CRC_WRITE_ERROR_BIT) /* No error on transmission of data */
+ #define MSC_STAT_CRC_WRITE_ERROR (1 << MSC_STAT_CRC_WRITE_ERROR_BIT) /* Card observed erroneous transmission of data */
+ #define MSC_STAT_CRC_WRITE_ERROR_NOSTS (2 << MSC_STAT_CRC_WRITE_ERROR_BIT) /* No CRC status is sent back */
+#define MSC_STAT_TIME_OUT_RES (1 << 1)
+#define MSC_STAT_TIME_OUT_READ (1 << 0)
+
+/* MSC Bus Clock Control Register (MSC_CLKRT) */
+
+#define MSC_CLKRT_CLK_RATE_BIT 0
+#define MSC_CLKRT_CLK_RATE_MASK (0x7 << MSC_CLKRT_CLK_RATE_BIT)
+ #define MSC_CLKRT_CLK_RATE_DIV_1 (0x0 << MSC_CLKRT_CLK_RATE_BIT) /* CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_2 (0x1 << MSC_CLKRT_CLK_RATE_BIT) /* 1/2 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_4 (0x2 << MSC_CLKRT_CLK_RATE_BIT) /* 1/4 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_8 (0x3 << MSC_CLKRT_CLK_RATE_BIT) /* 1/8 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_16 (0x4 << MSC_CLKRT_CLK_RATE_BIT) /* 1/16 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_32 (0x5 << MSC_CLKRT_CLK_RATE_BIT) /* 1/32 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_64 (0x6 << MSC_CLKRT_CLK_RATE_BIT) /* 1/64 of CLK_SRC */
+ #define MSC_CLKRT_CLK_RATE_DIV_128 (0x7 << MSC_CLKRT_CLK_RATE_BIT) /* 1/128 of CLK_SRC */
+
+/* MSC Command Sequence Control Register (MSC_CMDAT) */
+
+#define MSC_CMDAT_IO_ABORT (1 << 11)
+#define MSC_CMDAT_BUS_WIDTH_BIT 9
+#define MSC_CMDAT_BUS_WIDTH_MASK (0x3 << MSC_CMDAT_BUS_WIDTH_BIT)
+#define MSC_CMDAT_BUS_WIDTH_1BIT (0x0 << MSC_CMDAT_BUS_WIDTH_BIT)
+#define MSC_CMDAT_BUS_WIDTH_4BIT (0x2 << MSC_CMDAT_BUS_WIDTH_BIT)
+#define MSC_CMDAT_DMA_EN (1 << 8)
+#define MSC_CMDAT_INIT (1 << 7)
+#define MSC_CMDAT_BUSY (1 << 6)
+#define MSC_CMDAT_STREAM_BLOCK (1 << 5)
+#define MSC_CMDAT_WRITE (1 << 4)
+#define MSC_CMDAT_READ (0 << 4)
+#define MSC_CMDAT_DATA_EN (1 << 3)
+#define MSC_CMDAT_RESPONSE_BIT 0
+#define MSC_CMDAT_RESPONSE_MASK (0x7 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_NONE (0x0 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R1 (0x1 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R2 (0x2 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R3 (0x3 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R4 (0x4 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R5 (0x5 << MSC_CMDAT_RESPONSE_BIT)
+#define MSC_CMDAT_RESPONSE_R6 (0x6 << MSC_CMDAT_RESPONSE_BIT)
+
+/* MSC Interrupts Mask Register (MSC_IMASK) */
+#define MSC_IMASK_SDIO (1 << 7)
+#define MSC_IMASK_TXFIFO_WR_REQ (1 << 6)
+#define MSC_IMASK_RXFIFO_RD_REQ (1 << 5)
+#define MSC_IMASK_END_CMD_RES (1 << 2)
+#define MSC_IMASK_PRG_DONE (1 << 1)
+#define MSC_IMASK_DATA_TRAN_DONE (1 << 0)
+
+
+/* MSC Interrupts Status Register (MSC_IREG) */
+#define MSC_IREG_SDIO (1 << 7)
+#define MSC_IREG_TXFIFO_WR_REQ (1 << 6)
+#define MSC_IREG_RXFIFO_RD_REQ (1 << 5)
+#define MSC_IREG_END_CMD_RES (1 << 2)
+#define MSC_IREG_PRG_DONE (1 << 1)
+#define MSC_IREG_DATA_TRAN_DONE (1 << 0)
+
+static __inline__ unsigned int __cpm_get_pllout2(void)
+{
+ if (REG_CPM_CPCCR & CPM_CPCCR_PCS)
+ return __cpm_get_pllout();
+ else
+ return __cpm_get_pllout()/2;
+}
+
+static inline void __cpm_select_msc_clk(int sd)
+{
+ unsigned int pllout2 = __cpm_get_pllout2();
+ unsigned int div = 0;
+
+ if (sd) {
+ div = pllout2 / 24000000;
+ }
+ else {
+ div = pllout2 / 16000000;
+ }
+
+ REG_CPM_MSCCDR = div - 1;
+}
+#define __msc_reset() \
+do { \
+ REG_MSC_STRPCL = MSC_STRPCL_RESET; \
+ while (REG_MSC_STAT & MSC_STAT_IS_RESETTING); \
+} while (0)
+
#endif /* !__ASSEMBLY__ */
#endif /* __JZ4740_H__ */
diff --git a/board/qi/qi_lb60/qi_lb60.c b/board/qi/qi_lb60/qi_lb60.c
index 3bd4e2f..a2ba648 100644
--- a/board/qi/qi_lb60/qi_lb60.c
+++ b/board/qi/qi_lb60/qi_lb60.c
@@ -40,8 +40,13 @@ static void gpio_init(void)
__gpio_clear_pin(GPIO_KEYOUT_BASE + i);
}
- __gpio_as_input(GPIO_KEYIN_8);
- __gpio_enable_pull(GPIO_KEYIN_8);
+ if (__gpio_get_pin(GPIO_KEYIN_BASE + 2) == 0){
+ printf("[S] pressed, enable UART0\n");
+ __gpio_as_uart0();
+ } else {
+ __gpio_as_input(GPIO_KEYIN_8);
+ __gpio_enable_pull(GPIO_KEYIN_8);
+ }
/* enable the TP4, TP5 as UART0 */
__gpio_jtag_to_uart0();
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 565ba6a..3c717b1 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -47,6 +47,7 @@ COBJS-$(CONFIG_SDHCI) += sdhci.o
COBJS-$(CONFIG_S5P_SDHCI) += s5p_sdhci.o
COBJS-$(CONFIG_SH_MMCIF) += sh_mmcif.o
COBJS-$(CONFIG_TEGRA_MMC) += tegra_mmc.o
+COBJS-$(CONFIG_JZ4740_MMC) += jz_mmc.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff --git a/drivers/mmc/jz_mmc.c b/drivers/mmc/jz_mmc.c
new file mode 100644
index 0000000..642cecc
--- /dev/null
+++ b/drivers/mmc/jz_mmc.c
@@ -0,0 +1,1179 @@
+/*
+ * (C) Copyright 2003
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <part.h>
+#include <mmc.h>
+
+#include <asm/io.h>
+#include <asm/jz4740.h>
+#include "jz_mmc.h"
+
+static int sd2_0 = 0;
+static int mmc_ready = 0;
+static int use_4bit; /* Use 4-bit data bus */
+/*
+ * MMC Events
+ */
+#define MMC_EVENT_NONE 0x00 /* No events */
+#define MMC_EVENT_RX_DATA_DONE 0x01 /* Rx data done */
+#define MMC_EVENT_TX_DATA_DONE 0x02 /* Tx data done */
+#define MMC_EVENT_PROG_DONE 0x04 /* Programming is done */
+
+
+#define MMC_IRQ_MASK() \
+do { \
+ REG_MSC_IMASK = 0xffff; \
+ REG_MSC_IREG = 0xffff; \
+} while (0)
+
+/*
+ * GPIO definition
+ */
+#if defined(CONFIG_SAKC)
+
+#define __msc_init_io() \
+do { \
+ __gpio_as_input(GPIO_SD_CD_N); \
+} while (0)
+
+#else
+#define __msc_init_io() \
+do { \
+ __gpio_as_output(GPIO_SD_VCC_EN_N); \
+ __gpio_as_input(GPIO_SD_CD_N); \
+} while (0)
+
+#define __msc_enable_power() \
+do { \
+ __gpio_clear_pin(GPIO_SD_VCC_EN_N); \
+} while (0)
+
+#define __msc_disable_power() \
+do { \
+ __gpio_set_pin(GPIO_SD_VCC_EN_N); \
+} while (0)
+
+#endif /* CONFIG_SAKE */
+
+#define __msc_card_detected() \
+({ \
+ int detected = 1; \
+ __gpio_as_input(GPIO_SD_CD_N); \
+ __gpio_disable_pull(GPIO_SD_CD_N); \
+ if (!__gpio_get_pin(GPIO_SD_CD_N)) \
+ detected = 0; \
+ detected; \
+})
+
+/*
+ * Local functions
+ */
+
+extern int
+fat_register_device(block_dev_desc_t *dev_desc, int part_no);
+
+static block_dev_desc_t mmc_dev;
+
+block_dev_desc_t * mmc_get_dev(int dev)
+{
+ return ((block_dev_desc_t *)&mmc_dev);
+}
+
+/* Stop the MMC clock and wait while it happens */
+static inline int jz_mmc_stop_clock(void)
+{
+ int timeout = 1000;
+
+ REG_MSC_STRPCL = MSC_STRPCL_CLOCK_CONTROL_STOP;
+
+ while (timeout && (REG_MSC_STAT & MSC_STAT_CLK_EN)) {
+ timeout--;
+ if (timeout == 0)
+ return MMC_ERROR_TIMEOUT;
+ udelay(1);
+ }
+ return MMC_NO_ERROR;
+}
+
+/* Start the MMC clock and operation */
+static inline int jz_mmc_start_clock(void)
+{
+ REG_MSC_STRPCL = MSC_STRPCL_CLOCK_CONTROL_START | MSC_STRPCL_START_OP;
+ return MMC_NO_ERROR;
+}
+
+static inline u32 jz_mmc_calc_clkrt(int is_sd, u32 rate)
+{
+ u32 clkrt = 0;
+ u32 clk_src = is_sd ? 24000000 : 16000000;
+
+ while (rate < clk_src) {
+ clkrt ++;
+ clk_src >>= 1;
+ }
+
+ return clkrt;
+}
+
+/* Set the MMC clock frequency */
+void jz_mmc_set_clock(int sd, u32 rate)
+{
+ jz_mmc_stop_clock();
+
+ /* Select clock source of MSC */
+ __cpm_select_msc_clk(sd);
+
+ /* Set clock dividor of MSC */
+ REG_MSC_CLKRT = jz_mmc_calc_clkrt(sd, rate);
+}
+
+static int jz_mmc_check_status(struct mmc_request *request)
+{
+ u32 status = REG_MSC_STAT;
+
+ /* Checking for response or data timeout */
+ if (status & (MSC_STAT_TIME_OUT_RES | MSC_STAT_TIME_OUT_READ)) {
+ printf("MMC/SD timeout, MMC_STAT 0x%x CMD %d\n", status, request->cmd);
+ return MMC_ERROR_TIMEOUT;
+ }
+
+ /* Checking for CRC error */
+ if (status & (MSC_STAT_CRC_READ_ERROR | MSC_STAT_CRC_WRITE_ERROR | MSC_STAT_CRC_RES_ERR)) {
+ printf("MMC/CD CRC error, MMC_STAT 0x%x\n", status);
+ return MMC_ERROR_CRC;
+ }
+
+ return MMC_NO_ERROR;
+}
+
+/* Obtain response to the command and store it to response buffer */
+static void jz_mmc_get_response(struct mmc_request *request)
+{
+ int i;
+ u8 *buf;
+ u32 data;
+
+ debug("fetch response for request %d, cmd %d\n",
+ request->rtype, request->cmd);
+
+ buf = request->response;
+ request->result = MMC_NO_ERROR;
+
+ switch (request->rtype) {
+ case RESPONSE_R1: case RESPONSE_R1B: case RESPONSE_R6:
+ case RESPONSE_R3: case RESPONSE_R4: case RESPONSE_R5:
+ {
+ data = REG_MSC_RES;
+ buf[0] = (data >> 8) & 0xff;
+ buf[1] = data & 0xff;
+ data = REG_MSC_RES;
+ buf[2] = (data >> 8) & 0xff;
+ buf[3] = data & 0xff;
+ data = REG_MSC_RES;
+ buf[4] = data & 0xff;
+
+ debug("request %d, response [%02x %02x %02x %02x %02x]\n",
+ request->rtype, buf[0], buf[1], buf[2], buf[3], buf[4]);
+ break;
+ }
+ case RESPONSE_R2_CID: case RESPONSE_R2_CSD:
+ {
+ for (i = 0; i < 16; i += 2) {
+ data = REG_MSC_RES;
+ buf[i] = (data >> 8) & 0xff;
+ buf[i+1] = data & 0xff;
+ }
+ debug("request %d, response [", request->rtype);
+#if CONFIG_MMC_DEBUG_VERBOSE > 2
+ if (g_mmc_debug >= 3) {
+ int n;
+ for (n = 0; n < 17; n++)
+ printk("%02x ", buf[n]);
+ printk("]\n");
+ }
+#endif
+ break;
+ }
+ case RESPONSE_NONE:
+ debug("No response\n");
+ break;
+
+ default:
+ debug("unhandled response type for request %d\n", request->rtype);
+ break;
+ }
+}
+
+static int jz_mmc_receive_data(struct mmc_request *req)
+{
+ u32 stat, timeout, data, cnt;
+ u8 *buf = req->buffer;
+ u32 wblocklen = (u32)(req->block_len + 3) >> 2; /* length in word */
+
+ timeout = 0x3ffffff;
+
+ while (timeout) {
+ timeout--;
+ stat = REG_MSC_STAT;
+
+ if (stat & MSC_STAT_TIME_OUT_READ)
+ return MMC_ERROR_TIMEOUT;
+ else if (stat & MSC_STAT_CRC_READ_ERROR)
+ return MMC_ERROR_CRC;
+ else if (!(stat & MSC_STAT_DATA_FIFO_EMPTY)
+ || (stat & MSC_STAT_DATA_FIFO_AFULL)) {
+ /* Ready to read data */
+ break;
+ }
+ udelay(1);
+ }
+ if (!timeout)
+ return MMC_ERROR_TIMEOUT;
+
+ /* Read data from RXFIFO. It could be FULL or PARTIAL FULL */
+ cnt = wblocklen;
+ while (cnt) {
+ data = REG_MSC_RXFIFO;
+ {
+ *buf++ = (u8)(data >> 0);
+ *buf++ = (u8)(data >> 8);
+ *buf++ = (u8)(data >> 16);
+ *buf++ = (u8)(data >> 24);
+ }
+ cnt --;
+ while (cnt && (REG_MSC_STAT & MSC_STAT_DATA_FIFO_EMPTY))
+ ;
+ }
+ return MMC_NO_ERROR;
+}
+
+static int jz_mmc_transmit_data(struct mmc_request *req)
+{
+#if 0
+ u32 nob = req->nob;
+ u32 wblocklen = (u32)(req->block_len + 3) >> 2; /* length in word */
+ u8 *buf = req->buffer;
+ u32 *wbuf = (u32 *)buf;
+ u32 waligned = (((u32)buf & 0x3) == 0); /* word aligned ? */
+ u32 stat, timeout, data, cnt;
+
+ for (nob; nob >= 1; nob--) {
+ timeout = 0x3FFFFFF;
+
+ while (timeout) {
+ timeout--;
+ stat = REG_MSC_STAT;
+
+ if (stat & (MSC_STAT_CRC_WRITE_ERROR | MSC_STAT_CRC_WRITE_ERROR_NOSTS))
+ return MMC_ERROR_CRC;
+ else if (!(stat & MSC_STAT_DATA_FIFO_FULL)) {
+ /* Ready to write data */
+ break;
+ }
+
+ udelay(1);
+ }
+
+ if (!timeout)
+ return MMC_ERROR_TIMEOUT;
+
+ /* Write data to TXFIFO */
+ cnt = wblocklen;
+ while (cnt) {
+ while (REG_MSC_STAT & MSC_STAT_DATA_FIFO_FULL)
+ ;
+
+ if (waligned) {
+ REG_MSC_TXFIFO = *wbuf++;
+ }
+ else {
+ data = *buf++ | (*buf++ << 8) | (*buf++ << 16) | (*buf++ << 24);
+ REG_MSC_TXFIFO = data;
+ }
+
+ cnt--;
+ }
+ }
+#endif
+ return MMC_NO_ERROR;
+}
+
+
+/*
+ * Name: int jz_mmc_exec_cmd()
+ * Function: send command to the card, and get a response
+ * Input: struct mmc_request *req : MMC/SD request
+ * Output: 0: right >0: error code
+ */
+int jz_mmc_exec_cmd(struct mmc_request *request)
+{
+ u32 cmdat = 0, events = 0;
+ int retval, timeout = 0x3fffff;
+
+ /* Indicate we have no result yet */
+ request->result = MMC_NO_RESPONSE;
+ if (request->cmd == MMC_CIM_RESET) {
+ /* On reset, 1-bit bus width */
+ use_4bit = 0;
+
+ /* Reset MMC/SD controller */
+ __msc_reset();
+
+ /* On reset, drop MMC clock down */
+ jz_mmc_set_clock(0, MMC_CLOCK_SLOW);
+
+ /* On reset, stop MMC clock */
+ jz_mmc_stop_clock();
+ }
+ if (request->cmd == MMC_CMD_SEND_OP_COND) {
+ debug("Have an MMC card\n");
+ /* always use 1bit for MMC */
+ use_4bit = 0;
+ }
+ if (request->cmd == SET_BUS_WIDTH) {
+ if (request->arg == 0x2) {
+ printf("Use 4-bit bus width\n");
+ use_4bit = 1;
+ } else {
+ printf("Use 1-bit bus width\n");
+ use_4bit = 0;
+ }
+ }
+
+ /* stop clock */
+ jz_mmc_stop_clock();
+
+ /* mask all interrupts */
+ REG_MSC_IMASK = 0xffff;
+
+ /* clear status */
+ REG_MSC_IREG = 0xffff;
+
+ /* use 4-bit bus width when possible */
+ if (use_4bit)
+ cmdat |= MSC_CMDAT_BUS_WIDTH_4BIT;
+
+ /* Set command type and events */
+ switch (request->cmd) {
+ /* MMC core extra command */
+ case MMC_CIM_RESET:
+ cmdat |= MSC_CMDAT_INIT; /* Initialization sequence sent prior to command */
+ break;
+
+ /* bc - broadcast - no response */
+ case MMC_CMD_GO_IDLE_STATE:
+ case MMC_CMD_SET_DSR:
+ break;
+
+ /* bcr - broadcast with response */
+ case MMC_CMD_SEND_OP_COND:
+ case MMC_CMD_ALL_SEND_CID:
+ case MMC_GO_IRQ_STATE:
+ break;
+
+ /* adtc - addressed with data transfer */
+ case MMC_READ_DAT_UNTIL_STOP:
+ case MMC_CMD_READ_SINGLE_BLOCK:
+ case MMC_CMD_READ_MULTIPLE_BLOCK:
+ case SD_CMD_APP_SEND_SCR:
+ cmdat |= MSC_CMDAT_DATA_EN | MSC_CMDAT_READ;
+ events = MMC_EVENT_RX_DATA_DONE;
+ break;
+
+ case MMC_WRITE_DAT_UNTIL_STOP:
+ case MMC_CMD_WRITE_SINGLE_BLOCK:
+ case MMC_CMD_WRITE_MULTIPLE_BLOCK:
+ case MMC_PROGRAM_CID:
+ case MMC_PROGRAM_CSD:
+ case MMC_SEND_WRITE_PROT:
+ case MMC_GEN_CMD:
+ case MMC_LOCK_UNLOCK:
+ cmdat |= MSC_CMDAT_DATA_EN | MSC_CMDAT_WRITE;
+ events = MMC_EVENT_TX_DATA_DONE | MMC_EVENT_PROG_DONE;
+
+ break;
+
+ case MMC_CMD_STOP_TRANSMISSION:
+ events = MMC_EVENT_PROG_DONE;
+ break;
+
+ /* ac - no data transfer */
+ default:
+ break;
+ }
+
+ /* Set response type */
+ switch (request->rtype) {
+ case RESPONSE_NONE:
+ break;
+
+ case RESPONSE_R1B:
+ cmdat |= MSC_CMDAT_BUSY;
+ /*FALLTHRU*/
+ case RESPONSE_R1:
+ cmdat |= MSC_CMDAT_RESPONSE_R1;
+ break;
+ case RESPONSE_R2_CID:
+ case RESPONSE_R2_CSD:
+ cmdat |= MSC_CMDAT_RESPONSE_R2;
+ break;
+ case RESPONSE_R3:
+ cmdat |= MSC_CMDAT_RESPONSE_R3;
+ break;
+ case RESPONSE_R4:
+ cmdat |= MSC_CMDAT_RESPONSE_R4;
+ break;
+ case RESPONSE_R5:
+ cmdat |= MSC_CMDAT_RESPONSE_R5;
+ break;
+ case RESPONSE_R6:
+ cmdat |= MSC_CMDAT_RESPONSE_R6;
+ break;
+ default:
+ break;
+ }
+
+ /* Set command index */
+ if (request->cmd == MMC_CIM_RESET) {
+ REG_MSC_CMD = MMC_CMD_GO_IDLE_STATE;
+ } else {
+ REG_MSC_CMD = request->cmd;
+ }
+
+ /* Set argument */
+ REG_MSC_ARG = request->arg;
+
+ /* Set block length and nob */
+ if (request->cmd == SD_CMD_APP_SEND_SCR) { /* get SCR from DataFIFO */
+ REG_MSC_BLKLEN = 8;
+ REG_MSC_NOB = 1;
+ } else {
+ REG_MSC_BLKLEN = request->block_len;
+ REG_MSC_NOB = request->nob;
+ }
+
+ /* Set command */
+ REG_MSC_CMDAT = cmdat;
+
+ debug("Send cmd %d cmdat: %x arg: %x resp %d\n", request->cmd,
+ cmdat, request->arg, request->rtype);
+
+ /* Start MMC/SD clock and send command to card */
+ jz_mmc_start_clock();
+
+ /* Wait for command completion */
+ while (timeout-- && !(REG_MSC_STAT & MSC_STAT_END_CMD_RES))
+ ;
+
+ if (timeout == 0)
+ return MMC_ERROR_TIMEOUT;
+
+ REG_MSC_IREG = MSC_IREG_END_CMD_RES; /* clear flag */
+
+ /* Check for status */
+ retval = jz_mmc_check_status(request);
+ if (retval) {
+ return retval;
+ }
+
+ /* Complete command with no response */
+ if (request->rtype == RESPONSE_NONE) {
+ return MMC_NO_ERROR;
+ }
+
+ /* Get response */
+ jz_mmc_get_response(request);
+
+ /* Start data operation */
+ if (events & (MMC_EVENT_RX_DATA_DONE | MMC_EVENT_TX_DATA_DONE)) {
+ if (events & MMC_EVENT_RX_DATA_DONE) {
+ if (request->cmd == SD_CMD_APP_SEND_SCR) {
+ /* SD card returns SCR register as data.
+ MMC core expect it in the response buffer,
+ after normal response. */
+ request->buffer = (u8 *)((u32)request->response + 5);
+ }
+ jz_mmc_receive_data(request);
+ }
+
+ if (events & MMC_EVENT_TX_DATA_DONE) {
+ jz_mmc_transmit_data(request);
+ }
+
+ /* Wait for Data Done */
+ while (!(REG_MSC_IREG & MSC_IREG_DATA_TRAN_DONE))
+ ;
+ REG_MSC_IREG = MSC_IREG_DATA_TRAN_DONE; /* clear status */
+ }
+
+ /* Wait for Prog Done event */
+ if (events & MMC_EVENT_PROG_DONE) {
+ while (!(REG_MSC_IREG & MSC_IREG_PRG_DONE))
+ ;
+ REG_MSC_IREG = MSC_IREG_PRG_DONE; /* clear status */
+ }
+
+ /* Command completed */
+
+ return MMC_NO_ERROR; /* return successfully */
+}
+
+int mmc_block_read(u8 *dst, ulong src, ulong len)
+{
+
+ struct mmc_request request;
+ struct mmc_response_r1 r1;
+ int retval = 0;
+
+ if (len == 0)
+ goto exit;
+
+ mmc_simple_cmd(&request, MMC_CMD_SEND_STATUS, mmcinfo.rca, RESPONSE_R1);
+ retval = mmc_unpack_r1(&request, &r1, 0);
+ if (retval && (retval != MMC_ERROR_STATE_MISMATCH))
+ goto exit;
+
+ mmc_simple_cmd(&request, MMC_CMD_SET_BLOCKLEN, len, RESPONSE_R1);
+ if (retval = mmc_unpack_r1(&request, &r1, 0))
+ goto exit;
+
+ if (!sd2_0)
+ src *= mmcinfo.block_len;
+
+ mmc_send_cmd(&request, MMC_CMD_READ_SINGLE_BLOCK, src, 1, len, RESPONSE_R1, dst);
+ if (retval = mmc_unpack_r1(&request, &r1, 0))
+ goto exit;
+
+exit:
+ return retval;
+}
+
+ulong mmc_bread(int dev_num, ulong blkstart, ulong blkcnt, ulong *dst)
+{
+ if (!mmc_ready) {
+ printf("Please initial the MMC first\n");
+ return -1;
+ }
+
+ int i = 0;
+ ulong dst_tmp = dst;
+
+ for (i = 0; i < blkcnt; i++) {
+ if ((mmc_block_read((uchar *)(dst_tmp), blkstart, mmcinfo.block_len)) < 0)
+ return -1;
+
+ dst_tmp += mmcinfo.block_len;
+ blkstart++;
+ }
+
+ return i;
+}
+
+int mmc_select_card(void)
+{
+ struct mmc_request request;
+ struct mmc_response_r1 r1;
+ int retval;
+
+ mmc_simple_cmd(&request, MMC_CMD_SELECT_CARD, mmcinfo.rca, RESPONSE_R1B);
+ retval = mmc_unpack_r1(&request, &r1, 0);
+ if (retval) {
+ return retval;
+ }
+
+ if (mmcinfo.sd) {
+ mmc_simple_cmd(&request, MMC_CMD_APP_CMD, mmcinfo.rca, RESPONSE_R1);
+ retval = mmc_unpack_r1(&request,&r1,0);
+ if (retval) {
+ return retval;
+ }
+#if defined(MMC_BUS_WIDTH_1BIT)
+ mmc_simple_cmd(&request, SET_BUS_WIDTH, 1, RESPONSE_R1);
+#else
+ mmc_simple_cmd(&request, SET_BUS_WIDTH, 2, RESPONSE_R1);
+#endif
+ retval = mmc_unpack_r1(&request,&r1,0);
+ if (retval) {
+ return retval;
+ }
+ }
+ return 0;
+}
+
+/*
+ * Configure card
+ */
+static void mmc_configure_card(void)
+{
+ u32 rate;
+
+ /* Get card info */
+ if (sd2_0)
+ mmcinfo.block_num = (mmcinfo.csd.c_size + 1) << 10;
+ else
+ mmcinfo.block_num = (mmcinfo.csd.c_size + 1) * (1 << (mmcinfo.csd.c_size_mult + 2));
+
+ mmcinfo.block_len = 1 << mmcinfo.csd.read_bl_len;
+
+ mmc_dev.if_type = IF_TYPE_SD;
+ mmc_dev.part_type = PART_TYPE_DOS;
+ mmc_dev.dev = 0;
+ mmc_dev.lun = 0;
+ mmc_dev.type = 0;
+ mmc_dev.blksz = mmcinfo.block_len;
+ mmc_dev.lba = mmcinfo.block_num;
+ mmc_dev.removable = 0;
+
+ printf("%s Detected: %lu blocks of %lu bytes\n",
+ sd2_0 == 1 ? "SDHC" : "SD",
+ mmc_dev.lba,
+ mmc_dev.blksz);
+
+ /* Fix the clock rate */
+ rate = mmc_tran_speed(mmcinfo.csd.tran_speed);
+ if (rate < MMC_CLOCK_SLOW)
+ rate = MMC_CLOCK_SLOW;
+ if ((mmcinfo.sd == 0) && (rate > MMC_CLOCK_FAST))
+ rate = MMC_CLOCK_FAST;
+ if ((mmcinfo.sd) && (rate > SD_CLOCK_FAST))
+ rate = SD_CLOCK_FAST;
+
+ debug("%s: block_len=%d block_num=%d rate=%d\n",
+ __func__, mmcinfo.block_len, mmcinfo.block_num, rate);
+
+ jz_mmc_set_clock(mmcinfo.sd, rate);
+}
+
+/*
+ * State machine routines to initialize card(s)
+ */
+
+/*
+ CIM_SINGLE_CARD_ACQ (frequency at 400 kHz)
+ --- Must enter from GO_IDLE_STATE ---
+ 1. SD_SEND_OP_COND (SD Card) [CMD55] + [CMD41]
+ 2. SEND_OP_COND (Full Range) [CMD1] {optional}
+ 3. SEND_OP_COND (Set Range ) [CMD1]
+ If busy, delay and repeat step 2
+ 4. ALL_SEND_CID [CMD2]
+ If timeout, set an error (no cards found)
+ 5. SET_RELATIVE_ADDR [CMD3]
+ 6. SEND_CSD [CMD9]
+ 7. SET_DSR [CMD4] Only call this if (csd.dsr_imp).
+ 8. Set clock frequency (check available in csd.tran_speed)
+ */
+
+#define MMC_INIT_DOING 0
+#define MMC_INIT_PASSED 1
+#define MMC_INIT_FAILED 2
+
+static int mmc_init_card_state(struct mmc_request *request)
+{
+ struct mmc_response_r1 r1;
+ struct mmc_response_r3 r3;
+ int retval;
+ int ocr = 0x40300000;
+ int limit_41 = 0;
+
+ switch (request->cmd) {
+ case MMC_CMD_GO_IDLE_STATE: /* No response to parse */
+ if (mmcinfo.sd)
+ mmc_simple_cmd(request, 8, 0x1aa, RESPONSE_R1);
+ else
+ mmc_simple_cmd(request, MMC_CMD_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3);
+ break;
+
+ case 8:
+ retval = mmc_unpack_r1(request,&r1,mmcinfo.state);
+ mmc_simple_cmd(request, MMC_CMD_APP_CMD, 0, RESPONSE_R1);
+ break;
+
+ case MMC_CMD_APP_CMD:
+ retval = mmc_unpack_r1(request,&r1,mmcinfo.state);
+ if (retval & (limit_41 < 100)) {
+ debug("%s: unable to MMC_APP_CMD error=%d (%s)\n",
+ __func__, retval, mmc_result_to_string(retval));
+ limit_41++;
+ mmc_simple_cmd(request, SD_CMD_APP_SEND_OP_COND, ocr, RESPONSE_R3);
+ } else if (limit_41 < 100) {
+ limit_41++;
+ mmc_simple_cmd(request, SD_CMD_APP_SEND_OP_COND, ocr, RESPONSE_R3);
+ } else{
+ /* reset the card to idle*/
+ mmc_simple_cmd(request, MMC_CMD_GO_IDLE_STATE, 0, RESPONSE_NONE);
+ mmcinfo.sd = 0;
+ }
+ break;
+
+ case SD_CMD_APP_SEND_OP_COND:
+ retval = mmc_unpack_r3(request, &r3);
+ if (retval) {
+ debug("%s: try MMC card\n", __func__);
+ mmc_simple_cmd(request, SD_CMD_APP_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3);
+ break;
+ }
+
+ debug("%s: read ocr value = 0x%08x\n", __func__, r3.ocr);
+
+ if(!(r3.ocr & MMC_CARD_BUSY || ocr == 0)){
+ udelay(50000);
+ mmc_simple_cmd(request, MMC_CMD_APP_CMD, 0, RESPONSE_R1);
+ } else {
+ mmcinfo.sd = 1; /* SD Card ready */
+ mmcinfo.state = CARD_STATE_READY;
+ mmc_simple_cmd(request, MMC_CMD_ALL_SEND_CID, 0, RESPONSE_R2_CID);
+ }
+ break;
+
+ case MMC_CMD_SEND_OP_COND:
+ retval = mmc_unpack_r3(request, &r3);
+ if (retval) {
+ debug("%s: failed SEND_OP_COND error=%d (%s)\n",
+ __func__, retval, mmc_result_to_string(retval));
+ return MMC_INIT_FAILED;
+ }
+
+ debug("%s: read ocr value = 0x%08x\n", __func__, r3.ocr);
+ if (!(r3.ocr & MMC_CARD_BUSY)) {
+ mmc_simple_cmd(request, MMC_CMD_SEND_OP_COND, MMC_OCR_ARG, RESPONSE_R3);
+ } else {
+ mmcinfo.sd = 0; /* MMC Card ready */
+ mmcinfo.state = CARD_STATE_READY;
+ mmc_simple_cmd(request, MMC_CMD_ALL_SEND_CID, 0, RESPONSE_R2_CID);
+ }
+ break;
+
+ case MMC_CMD_ALL_SEND_CID:
+ retval = mmc_unpack_cid( request, &mmcinfo.cid );
+ /*FIXME:ignore CRC error for CMD2/CMD9/CMD10 */
+ if ( retval && (retval != MMC_ERROR_CRC)) {
+ debug("mmc_init_card_state: unable to ALL_SEND_CID error=%d (%s)\n",
+ retval, mmc_result_to_string(retval));
+ return MMC_INIT_FAILED;
+ }
+ mmcinfo.state = CARD_STATE_IDENT;
+ if(mmcinfo.sd)
+ mmc_simple_cmd(request, MMC_CMD_SET_RELATIVE_ADDR, 0, RESPONSE_R6);
+ else
+ mmc_simple_cmd(request, MMC_CMD_SET_RELATIVE_ADDR, ID_TO_RCA(mmcinfo.id) << 16, RESPONSE_R1);
+ break;
+
+ case MMC_CMD_SET_RELATIVE_ADDR:
+ if (mmcinfo.sd) {
+ retval = mmc_unpack_r6(request, &r1, mmcinfo.state, &mmcinfo.rca);
+ mmcinfo.rca = mmcinfo.rca << 16;
+ debug("%s: Get RCA from SD: 0x%04x Status: %x\n",
+ __func__, mmcinfo.rca, r1.status);
+ } else {
+ retval = mmc_unpack_r1(request,&r1,mmcinfo.state);
+ mmcinfo.rca = ID_TO_RCA(mmcinfo.id) << 16;
+ }
+ if (retval) {
+ debug("%s: unable to SET_RELATIVE_ADDR error=%d (%s)\n",
+ __func__, retval, mmc_result_to_string(retval));
+ return MMC_INIT_FAILED;
+ }
+
+ mmcinfo.state = CARD_STATE_STBY;
+ mmc_simple_cmd(request, MMC_CMD_SEND_CSD, mmcinfo.rca, RESPONSE_R2_CSD);
+
+ break;
+
+ case MMC_CMD_SEND_CSD:
+ retval = mmc_unpack_csd(request, &mmcinfo.csd);
+ mmc_ready = 1;
+ /*FIXME:ignore CRC error for CMD2/CMD9/CMD10 */
+ if (retval && (retval != MMC_ERROR_CRC)) {
+ debug("%s: unable to SEND_CSD error=%d (%s)\n",
+ __func__, retval, mmc_result_to_string(retval));
+ return MMC_INIT_FAILED;
+ }
+ if (mmcinfo.csd.dsr_imp) {
+ debug("%s: driver doesn't support setting DSR\n", __func__);
+ }
+ mmc_configure_card();
+ return MMC_INIT_PASSED;
+
+ default:
+ debug("%s: error! Illegal last cmd %d\n", __func__, request->cmd);
+ return MMC_INIT_FAILED;
+ }
+
+ return MMC_INIT_DOING;
+}
+
+int mmc_init_card(void)
+{
+ struct mmc_request request;
+ int retval;
+
+ mmc_simple_cmd(&request, MMC_CIM_RESET, 0, RESPONSE_NONE); /* reset card */
+ mmc_simple_cmd(&request, MMC_CMD_GO_IDLE_STATE, 0, RESPONSE_NONE);
+ mmcinfo.sd = 1; /* assuming a SD card */
+
+ while ((retval = mmc_init_card_state(&request)) == MMC_INIT_DOING)
+ ;
+
+ if (retval == MMC_INIT_PASSED)
+ return MMC_NO_ERROR;
+ else
+ return MMC_NO_RESPONSE;
+}
+
+int mmc_legacy_init(int verbose)
+{
+ if (!__msc_card_detected())
+ return 1;
+
+ /* Step-1: init GPIO */
+ __gpio_as_msc();
+ __msc_init_io();
+
+ /* Step-2: turn on power of card */
+#if !defined(CONFIG_SAKC)
+ __msc_enable_power();
+#endif
+
+ /* Step-3: Reset MSC Controller. */
+ __msc_reset();
+
+ /* Step-3: mask all IRQs. */
+ MMC_IRQ_MASK();
+
+ /* Step-4: stop MMC/SD clock */
+ jz_mmc_stop_clock();
+ mmc_init_card();
+ mmc_select_card();
+
+ mmc_dev.block_read = mmc_bread;
+ fat_register_device(&mmc_dev,1); /* partitions start counting with 1 */
+
+ return 0;
+}
+
+/*
+ * Debugging functions
+ */
+static char * mmc_result_strings[] = {
+ "NO_RESPONSE",
+ "NO_ERROR",
+ "ERROR_OUT_OF_RANGE",
+ "ERROR_ADDRESS",
+ "ERROR_BLOCK_LEN",
+ "ERROR_ERASE_SEQ",
+ "ERROR_ERASE_PARAM",
+ "ERROR_WP_VIOLATION",
+ "ERROR_CARD_IS_LOCKED",
+ "ERROR_LOCK_UNLOCK_FAILED",
+ "ERROR_COM_CRC",
+ "ERROR_ILLEGAL_COMMAND",
+ "ERROR_CARD_ECC_FAILED",
+ "ERROR_CC",
+ "ERROR_GENERAL",
+ "ERROR_UNDERRUN",
+ "ERROR_OVERRUN",
+ "ERROR_CID_CSD_OVERWRITE",
+ "ERROR_STATE_MISMATCH",
+ "ERROR_HEADER_MISMATCH",
+ "ERROR_TIMEOUT",
+ "ERROR_CRC",
+ "ERROR_DRIVER_FAILURE",
+};
+
+char * mmc_result_to_string(int i)
+{
+ return mmc_result_strings[i+1];
+}
+
+static char * card_state_strings[] = {
+ "empty",
+ "idle",
+ "ready",
+ "ident",
+ "stby",
+ "tran",
+ "data",
+ "rcv",
+ "prg",
+ "dis",
+};
+
+static inline char * card_state_to_string(int i)
+{
+ return card_state_strings[i+1];
+}
+
+/*
+ * Utility functions
+ */
+
+#define PARSE_U32(_buf,_index) \
+ (((u32)_buf[_index]) << 24) | (((u32)_buf[_index+1]) << 16) | \
+ (((u32)_buf[_index+2]) << 8) | ((u32)_buf[_index+3]);
+
+#define PARSE_U16(_buf,_index) \
+ (((u16)_buf[_index]) << 8) | ((u16)_buf[_index+1]);
+
+int mmc_unpack_csd(struct mmc_request *request, struct mmc_csd *csd)
+{
+ u8 *buf = request->response;
+ int num = 0;
+
+ if (request->result)
+ return request->result;
+
+ if (buf[0] != 0x3f)
+ return MMC_ERROR_HEADER_MISMATCH;
+
+ csd->csd_structure = (buf[1] & 0xc0) >> 6;
+ if (csd->csd_structure)
+ sd2_0 = 1;
+ else
+ sd2_0 = 0;
+
+ switch (csd->csd_structure) {
+ case 0 :/* Version 1.01-1.10
+ * Version 2.00/Standard Capacity */
+ csd->taac = buf[2];
+ csd->nsac = buf[3];
+ csd->tran_speed = buf[4];
+ csd->ccc = (((u16)buf[5]) << 4) | ((buf[6] & 0xf0) >> 4);
+ csd->read_bl_len = buf[6] & 0x0f;
+ /* for support 2GB card*/
+ if (csd->read_bl_len >= 10)
+ {
+ num = csd->read_bl_len - 9;
+ csd->read_bl_len = 9;
+ }
+
+ csd->read_bl_partial = (buf[7] & 0x80) ? 1 : 0;
+ csd->write_blk_misalign = (buf[7] & 0x40) ? 1 : 0;
+ csd->read_blk_misalign = (buf[7] & 0x20) ? 1 : 0;
+ csd->dsr_imp = (buf[7] & 0x10) ? 1 : 0;
+ csd->c_size = ((((u16)buf[7]) & 0x03) << 10) | (((u16)buf[8]) << 2) | (((u16)buf[9]) & 0xc0) >> 6;
+
+ if (num)
+ csd->c_size = csd->c_size << num;
+
+
+ csd->vdd_r_curr_min = (buf[9] & 0x38) >> 3;
+ csd->vdd_r_curr_max = buf[9] & 0x07;
+ csd->vdd_w_curr_min = (buf[10] & 0xe0) >> 5;
+ csd->vdd_w_curr_max = (buf[10] & 0x1c) >> 2;
+ csd->c_size_mult = ((buf[10] & 0x03) << 1) | ((buf[11] & 0x80) >> 7);
+ csd->sector_size = (buf[11] & 0x7c) >> 2;
+ csd->erase_grp_size = ((buf[11] & 0x03) << 3) | ((buf[12] & 0xe0) >> 5);
+ csd->wp_grp_size = buf[12] & 0x1f;
+ csd->wp_grp_enable = (buf[13] & 0x80) ? 1 : 0;
+ csd->default_ecc = (buf[13] & 0x60) >> 5;
+ csd->r2w_factor = (buf[13] & 0x1c) >> 2;
+ csd->write_bl_len = ((buf[13] & 0x03) << 2) | ((buf[14] & 0xc0) >> 6);
+ if (csd->write_bl_len >= 10)
+ csd->write_bl_len = 9;
+
+ csd->write_bl_partial = (buf[14] & 0x20) ? 1 : 0;
+ csd->file_format_grp = (buf[15] & 0x80) ? 1 : 0;
+ csd->copy = (buf[15] & 0x40) ? 1 : 0;
+ csd->perm_write_protect = (buf[15] & 0x20) ? 1 : 0;
+ csd->tmp_write_protect = (buf[15] & 0x10) ? 1 : 0;
+ csd->file_format = (buf[15] & 0x0c) >> 2;
+ csd->ecc = buf[15] & 0x03;
+ break;
+ case 1 : /* Version 2.00/High Capacity */
+ csd->taac = 0;
+ csd->nsac = 0;
+ csd->tran_speed = buf[4];
+ csd->ccc = (((u16)buf[5]) << 4) | ((buf[6] & 0xf0) >> 4);
+
+ csd->read_bl_len = 9;
+ csd->read_bl_partial = 0;
+ csd->write_blk_misalign = 0;
+ csd->read_blk_misalign = 0;
+ csd->dsr_imp = (buf[7] & 0x10) ? 1 : 0;
+ csd->c_size = ((((u16)buf[8]) & 0x3f) << 16) | (((u16)buf[9]) << 8) | ((u16)buf[10]) ;
+ csd->sector_size = 0x7f;
+ csd->erase_grp_size = 0;
+ csd->wp_grp_size = 0;
+ csd->wp_grp_enable = 0;
+ csd->default_ecc = (buf[13] & 0x60) >> 5;
+ csd->r2w_factor = 4;/* Unused */
+ csd->write_bl_len = 9;
+
+ csd->write_bl_partial = 0;
+ csd->file_format_grp = 0;
+ csd->copy = (buf[15] & 0x40) ? 1 : 0;
+ csd->perm_write_protect = (buf[15] & 0x20) ? 1 : 0;
+ csd->tmp_write_protect = (buf[15] & 0x10) ? 1 : 0;
+ csd->file_format = 0;
+ csd->ecc = buf[15] & 0x03;
+ }
+
+ return 0;
+}
+
+int mmc_unpack_r1(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state)
+{
+ u8 *buf = request->response;
+
+ if (request->result)
+ return request->result;
+
+ r1->cmd = buf[0];
+ r1->status = PARSE_U32(buf,1);
+
+ debug("mmc_unpack_r1: cmd=%d status=%08x\n", r1->cmd, r1->status);
+
+ if (R1_STATUS(r1->status)) {
+ if (r1->status & R1_OUT_OF_RANGE) return MMC_ERROR_OUT_OF_RANGE;
+ if (r1->status & R1_ADDRESS_ERROR) return MMC_ERROR_ADDRESS;
+ if (r1->status & R1_BLOCK_LEN_ERROR) return MMC_ERROR_BLOCK_LEN;
+ if (r1->status & R1_ERASE_SEQ_ERROR) return MMC_ERROR_ERASE_SEQ;
+ if (r1->status & R1_ERASE_PARAM) return MMC_ERROR_ERASE_PARAM;
+ if (r1->status & R1_WP_VIOLATION) return MMC_ERROR_WP_VIOLATION;
+ /*if (r1->status & R1_CARD_IS_LOCKED) return MMC_ERROR_CARD_IS_LOCKED; */
+ if (r1->status & R1_LOCK_UNLOCK_FAILED) return MMC_ERROR_LOCK_UNLOCK_FAILED;
+ if (r1->status & R1_COM_CRC_ERROR) return MMC_ERROR_COM_CRC;
+ if (r1->status & R1_ILLEGAL_COMMAND) return MMC_ERROR_ILLEGAL_COMMAND;
+ if (r1->status & R1_CARD_ECC_FAILED) return MMC_ERROR_CARD_ECC_FAILED;
+ if (r1->status & R1_CC_ERROR) return MMC_ERROR_CC;
+ if (r1->status & R1_ERROR) return MMC_ERROR_GENERAL;
+ if (r1->status & R1_UNDERRUN) return MMC_ERROR_UNDERRUN;
+ if (r1->status & R1_OVERRUN) return MMC_ERROR_OVERRUN;
+ if (r1->status & R1_CID_CSD_OVERWRITE) return MMC_ERROR_CID_CSD_OVERWRITE;
+ }
+
+ if (buf[0] != request->cmd)
+ return MMC_ERROR_HEADER_MISMATCH;
+
+ /* This should be last - it's the least dangerous error */
+
+ return 0;
+}
+
+int mmc_unpack_scr(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, u32 *scr)
+{
+ u8 *buf = request->response;
+ if (request->result)
+ return request->result;
+
+ *scr = PARSE_U32(buf, 5); /* Save SCR returned by the SD Card */
+ return mmc_unpack_r1(request, r1, state);
+
+}
+
+int mmc_unpack_r6(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, int *rca)
+{
+ u8 *buf = request->response;
+
+ if (request->result)
+ return request->result;
+
+ *rca = PARSE_U16(buf,1); /* Save RCA returned by the SD Card */
+
+ *(buf+1) = 0;
+ *(buf+2) = 0;
+
+ return mmc_unpack_r1(request, r1, state);
+}
+
+int mmc_unpack_cid(struct mmc_request *request, struct mmc_cid *cid)
+{
+ int i;
+ u8 *buf = request->response;
+
+ if (request->result)
+ return request->result;
+
+ cid->mid = buf[1];
+ cid->oid = PARSE_U16(buf,2);
+ for (i = 0 ; i < 5 ; i++)
+ cid->pnm[i] = buf[4+i];
+ cid->pnm[6] = 0;
+ cid->prv = buf[10];
+ cid->psn = PARSE_U32(buf,10);
+ cid->mdt = buf[15];
+
+ printf("Man %02x OEM 0x%04x \"%s\" %d.%d 0x%08x "
+ "Date %02u/%04u\n",
+ cid->mid,
+ cid->oid,
+ cid->pnm,
+ cid->prv >> 4,
+ cid->prv & 0xf,
+ cid->psn,
+ cid->mdt & 0xf,
+ (cid->mdt >> 4) + 2000);
+
+ if (buf[0] != 0x3f)
+ return MMC_ERROR_HEADER_MISMATCH;
+ return 0;
+}
+
+int mmc_unpack_r3(struct mmc_request *request, struct mmc_response_r3 *r3)
+{
+ u8 *buf = request->response;
+
+ if (request->result)
+ return request->result;
+
+ r3->ocr = PARSE_U32(buf,1);
+ debug("mmc_unpack_r3: ocr=%08x\n", r3->ocr);
+
+ if (buf[0] != 0x3f) return MMC_ERROR_HEADER_MISMATCH;
+ return 0;
+}
+
+#define KBPS 1
+#define MBPS 1000
+
+static u32 ts_exp[] = { 100*KBPS, 1*MBPS, 10*MBPS, 100*MBPS, 0, 0, 0, 0 };
+static u32 ts_mul[] = { 0, 1000, 1200, 1300, 1500, 2000, 2500, 3000,
+ 3500, 4000, 4500, 5000, 5500, 6000, 7000, 8000 };
+
+u32 mmc_tran_speed(u8 ts)
+{
+ u32 rate = ts_exp[(ts & 0x7)] * ts_mul[(ts & 0x78) >> 3];
+
+ if (rate <= 0) {
+ debug("%s: error - unrecognized speed 0x%02x\n", __func__, ts);
+ return 1;
+ }
+
+ return rate;
+}
+
+void mmc_send_cmd(struct mmc_request *request, int cmd, u32 arg,
+ u16 nob, u16 block_len, enum mmc_rsp_t rtype, u8 *buffer)
+{
+ request->cmd = cmd;
+ request->arg = arg;
+ request->rtype = rtype;
+ request->nob = nob;
+ request->block_len = block_len;
+ request->buffer = buffer;
+ request->cnt = nob * block_len;
+
+ jz_mmc_exec_cmd(request);
+}
diff --git a/drivers/mmc/jz_mmc.h b/drivers/mmc/jz_mmc.h
new file mode 100644
index 0000000..936c514
--- /dev/null
+++ b/drivers/mmc/jz_mmc.h
@@ -0,0 +1,176 @@
+/*
+ * linux/drivers/mmc/jz_mmc.h
+ *
+ * Author: Vladimir Shebordaev, Igor Oblakov
+ * Copyright: MontaVista Software Inc.
+ *
+ * $Id: jz_mmc.h,v 1.3 2007-06-15 08:04:20 jlwei Exp $
+ *
+ * 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.
+ */
+#ifndef __MMC_JZMMC_H__
+#define __MMC_JZMMC_H__
+
+#define ID_TO_RCA(x) ((x)+1)
+#define MMC_OCR_ARG 0x00ff8000 /* Argument of OCR */
+
+/* Standard MMC/SD clock speeds */
+#define MMC_CLOCK_SLOW 400000 /* 400 kHz for initial setup */
+#define MMC_CLOCK_FAST 20000000 /* 20 MHz for maximum for normal operation */
+#define SD_CLOCK_FAST 24000000 /* 24 MHz for SD Cards */
+
+/* Use negative numbers to disambiguate */
+#define MMC_CIM_RESET -1
+#define SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
+
+#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
+#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
+#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
+#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
+#define R1_ERASE_PARAM (1 << 27) /* ex, c */
+#define R1_WP_VIOLATION (1 << 26) /* erx, c */
+#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
+#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
+#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
+#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
+#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
+#define R1_CC_ERROR (1 << 20) /* erx, c */
+#define R1_ERROR (1 << 19) /* erx, c */
+#define R1_UNDERRUN (1 << 18) /* ex, c */
+#define R1_OVERRUN (1 << 17) /* ex, c */
+#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
+#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
+#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
+#define R1_ERASE_RESET (1 << 13) /* sr, c */
+#define R1_STATUS(x) (x & 0xFFFFE000)
+
+#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
+
+#define MMC_PROGRAM_CID 26 /* adtc R1 */
+#define MMC_PROGRAM_CSD 27 /* adtc R1 */
+
+#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
+#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1b */
+#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
+#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
+#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
+#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
+
+
+enum mmc_result_t {
+ MMC_NO_RESPONSE = -1,
+ MMC_NO_ERROR = 0,
+ MMC_ERROR_OUT_OF_RANGE,
+ MMC_ERROR_ADDRESS,
+ MMC_ERROR_BLOCK_LEN,
+ MMC_ERROR_ERASE_SEQ,
+ MMC_ERROR_ERASE_PARAM,
+ MMC_ERROR_WP_VIOLATION,
+ MMC_ERROR_CARD_IS_LOCKED,
+ MMC_ERROR_LOCK_UNLOCK_FAILED,
+ MMC_ERROR_COM_CRC,
+ MMC_ERROR_ILLEGAL_COMMAND,
+ MMC_ERROR_CARD_ECC_FAILED,
+ MMC_ERROR_CC,
+ MMC_ERROR_GENERAL,
+ MMC_ERROR_UNDERRUN,
+ MMC_ERROR_OVERRUN,
+ MMC_ERROR_CID_CSD_OVERWRITE,
+ MMC_ERROR_STATE_MISMATCH,
+ MMC_ERROR_HEADER_MISMATCH,
+ MMC_ERROR_TIMEOUT,
+ MMC_ERROR_CRC,
+ MMC_ERROR_DRIVER_FAILURE,
+};
+
+enum card_state {
+ CARD_STATE_EMPTY = -1,
+ CARD_STATE_IDLE = 0,
+ CARD_STATE_READY = 1,
+ CARD_STATE_IDENT = 2,
+ CARD_STATE_STBY = 3,
+ CARD_STATE_TRAN = 4,
+ CARD_STATE_DATA = 5,
+ CARD_STATE_RCV = 6,
+ CARD_STATE_PRG = 7,
+ CARD_STATE_DIS = 8,
+};
+
+enum mmc_rsp_t {
+ RESPONSE_NONE = 0,
+ RESPONSE_R1 = 1,
+ RESPONSE_R1B = 2,
+ RESPONSE_R2_CID = 3,
+ RESPONSE_R2_CSD = 4,
+ RESPONSE_R3 = 5,
+ RESPONSE_R4 = 6,
+ RESPONSE_R5 = 7,
+ RESPONSE_R6 = 8,
+};
+
+struct mmc_response_r1 {
+ u8 cmd;
+ u32 status;
+};
+
+struct mmc_response_r3 {
+ u32 ocr;
+};
+
+/* the information structure of MMC/SD Card */
+struct mmc_info {
+ int id; /* Card index */
+ int sd; /* MMC or SD card */
+ int rca; /* RCA */
+ u32 scr; /* SCR 63:32*/
+ int flags; /* Ejected, inserted */
+ enum card_state state; /* empty, ident, ready, whatever */
+
+ /* Card specific information */
+ struct mmc_cid cid;
+ struct mmc_csd csd;
+ u32 block_num;
+ u32 block_len;
+ u32 erase_unit;
+};
+
+struct mmc_info mmcinfo;
+
+struct mmc_request {
+ int index; /* Slot index - used for CS lines */
+ int cmd; /* Command to send */
+ u32 arg; /* Argument to send */
+ enum mmc_rsp_t rtype; /* Response type expected */
+
+ /* Data transfer (these may be modified at the low level) */
+ u16 nob; /* Number of blocks to transfer*/
+ u16 block_len; /* Block length */
+ u8 *buffer; /* Data buffer */
+ u32 cnt; /* Data length, for PIO */
+
+ /* Results */
+ u8 response[18]; /* Buffer to store response - CRC is optional */
+ enum mmc_result_t result;
+};
+
+char * mmc_result_to_string(int);
+int mmc_unpack_csd(struct mmc_request *request, struct mmc_csd *csd);
+int mmc_unpack_r1(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state);
+int mmc_unpack_r6(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, int *rca);
+int mmc_unpack_scr(struct mmc_request *request, struct mmc_response_r1 *r1, enum card_state state, u32 *scr);
+int mmc_unpack_cid(struct mmc_request *request, struct mmc_cid *cid);
+int mmc_unpack_r3(struct mmc_request *request, struct mmc_response_r3 *r3);
+
+void mmc_send_cmd(struct mmc_request *request, int cmd, u32 arg,
+ u16 nob, u16 block_len, enum mmc_rsp_t rtype, u8 *buffer);
+u32 mmc_tran_speed(u8 ts);
+void jz_mmc_set_clock(int sd, u32 rate);
+
+static inline void mmc_simple_cmd(struct mmc_request *request, int cmd, u32 arg, enum mmc_rsp_t rtype)
+{
+ mmc_send_cmd( request, cmd, arg, 0, 0, rtype, 0);
+}
+
+#endif /* __MMC_JZMMC_H__ */
diff --git a/include/configs/qi_lb60.h b/include/configs/qi_lb60.h
index 7bff444..7b33be0 100644
--- a/include/configs/qi_lb60.h
+++ b/include/configs/qi_lb60.h
@@ -31,6 +31,15 @@
/*
* Miscellaneous configurable options
*/
+#define CONFIG_JZ4740_MMC
+#define CONFIG_MMC 1
+#define CONFIG_FAT 1
+#define CONFIG_DOS_PARTITION 1
+#define CONFIG_CMD_MMC
+#define CONFIG_CMD_FAT
+#define CONFIG_CMD_EXT2
+
+
#define CONFIG_SYS_SDRAM_BASE 0x80000000 /* Cached addr */
#define CONFIG_SYS_INIT_SP_OFFSET 0x400000
#define CONFIG_SYS_LOAD_ADDR 0x80600000
diff --git a/include/mmc.h b/include/mmc.h
index a13e2bd..3c4761c 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -283,4 +283,44 @@ struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);
int mmc_legacy_init(int verbose);
#endif
+struct mmc_csd
+{
+ u8 csd_structure:2,
+ spec_vers:4,
+ rsvd1:2;
+ u8 taac;
+ u8 nsac;
+ u8 tran_speed;
+ u16 ccc:12,
+ read_bl_len:4;
+ u32 c_size:22;
+ u64 read_bl_partial:1,
+ write_blk_misalign:1,
+ read_blk_misalign:1,
+ dsr_imp:1,
+ rsvd2:2,
+ vdd_r_curr_min:3,
+ vdd_r_curr_max:3,
+ vdd_w_curr_min:3,
+ vdd_w_curr_max:3,
+ c_size_mult:3,
+ sector_size:5,
+ erase_grp_size:5,
+ wp_grp_size:5,
+ wp_grp_enable:1,
+ default_ecc:2,
+ r2w_factor:3,
+ write_bl_len:4,
+ write_bl_partial:1,
+ rsvd3:5;
+ u8 file_format_grp:1,
+ copy:1,
+ perm_write_protect:1,
+ tmp_write_protect:1,
+ file_format:2,
+ ecc:2;
+ u8 crc:7;
+ u8 one:1;
+};
+
#endif /* _MMC_H_ */
--
1.7.9.5
Generated by GNU Enscript 1.6.5.90.