#include <common.h>
#include <fuse.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
+#include <asm/mach-imx/sys_proto.h>
#define BO_CTRL_WR_UNLOCK 16
#define BM_CTRL_WR_UNLOCK 0xffff0000
#define BM_CTRL_ERROR 0x00000200
#define BM_CTRL_BUSY 0x00000100
#define BO_CTRL_ADDR 0
+#ifdef CONFIG_MX7
+#define BM_CTRL_ADDR 0x0000000f
+#define BM_CTRL_RELOAD 0x00000400
+#elif defined(CONFIG_MX7ULP)
+#define BM_CTRL_ADDR 0x000000FF
+#define BM_CTRL_RELOAD 0x00000400
+#define BM_OUT_STATUS_DED 0x00000400
+#define BM_OUT_STATUS_LOCKED 0x00000800
+#define BM_OUT_STATUS_PROGFAIL 0x00001000
+#elif defined(CONFIG_MX8M)
+#define BM_CTRL_ADDR 0x000000ff
+#else
#define BM_CTRL_ADDR 0x0000007f
-
+#endif
+
+#ifdef CONFIG_MX7
+#define BO_TIMING_FSOURCE 12
+#define BM_TIMING_FSOURCE 0x0007f000
+#define BV_TIMING_FSOURCE_NS 1001
+#define BO_TIMING_PROG 0
+#define BM_TIMING_PROG 0x00000fff
+#define BV_TIMING_PROG_US 10
+#else
#define BO_TIMING_STROBE_READ 16
#define BM_TIMING_STROBE_READ 0x003f0000
#define BV_TIMING_STROBE_READ_NS 37
#define BO_TIMING_STROBE_PROG 0
#define BM_TIMING_STROBE_PROG 0x00000fff
#define BV_TIMING_STROBE_PROG_US 10
+#endif
#define BM_READ_CTRL_READ_FUSE 0x00000001
#define WRITE_POSTAMBLE_US 2
+#if defined(CONFIG_MX6) || defined(CONFIG_VF610)
+#define FUSE_BANK_SIZE 0x80
+#ifdef CONFIG_MX6SL
+#define FUSE_BANKS 8
+#elif defined(CONFIG_MX6ULL) || defined(CONFIG_MX6SLL)
+#define FUSE_BANKS 9
+#else
+#define FUSE_BANKS 16
+#endif
+#elif defined CONFIG_MX7
+#define FUSE_BANK_SIZE 0x40
+#define FUSE_BANKS 16
+#elif defined(CONFIG_MX7ULP)
+#define FUSE_BANK_SIZE 0x80
+#define FUSE_BANKS 31
+#elif defined(CONFIG_MX8M)
+#define FUSE_BANK_SIZE 0x40
+#define FUSE_BANKS 64
+#else
+#error "Unsupported architecture\n"
+#endif
+
+#if defined(CONFIG_MX6)
+
+/*
+ * There is a hole in shadow registers address map of size 0x100
+ * between bank 5 and bank 6 on iMX6QP, iMX6DQ, iMX6SDL, iMX6SX,
+ * iMX6UL, i.MX6ULL and i.MX6SLL.
+ * Bank 5 ends at 0x6F0 and Bank 6 starts at 0x800. When reading the fuses,
+ * we should account for this hole in address space.
+ *
+ * Similar hole exists between bank 14 and bank 15 of size
+ * 0x80 on iMX6QP, iMX6DQ, iMX6SDL and iMX6SX.
+ * Note: iMX6SL has only 0-7 banks and there is no hole.
+ * Note: iMX6UL doesn't have this one.
+ *
+ * This function is to covert user input to physical bank index.
+ * Only needed when read fuse, because we use register offset, so
+ * need to calculate real register offset.
+ * When write, no need to consider hole, always use the bank/word
+ * index from fuse map.
+ */
+u32 fuse_bank_physical(int index)
+{
+ u32 phy_index;
+
+ if (is_mx6sl() || is_mx7ulp()) {
+ phy_index = index;
+ } else if (is_mx6ul() || is_mx6ull() || is_mx6sll()) {
+ if ((is_mx6ull() || is_mx6sll()) && index == 8)
+ index = 7;
+
+ if (index >= 6)
+ phy_index = fuse_bank_physical(5) + (index - 6) + 3;
+ else
+ phy_index = index;
+ } else {
+ if (index >= 15)
+ phy_index = fuse_bank_physical(14) + (index - 15) + 2;
+ else if (index >= 6)
+ phy_index = fuse_bank_physical(5) + (index - 6) + 3;
+ else
+ phy_index = index;
+ }
+ return phy_index;
+}
+
+u32 fuse_word_physical(u32 bank, u32 word_index)
+{
+ if (is_mx6ull() || is_mx6sll()) {
+ if (bank == 8)
+ word_index = word_index + 4;
+ }
+
+ return word_index;
+}
+#else
+u32 fuse_bank_physical(int index)
+{
+ return index;
+}
+
+u32 fuse_word_physical(u32 bank, u32 word_index)
+{
+ return word_index;
+}
+
+#endif
+
static void wait_busy(struct ocotp_regs *regs, unsigned int delay_us)
{
while (readl(®s->ctrl) & BM_CTRL_BUSY)
{
*regs = (struct ocotp_regs *)OCOTP_BASE_ADDR;
- if (bank >= ARRAY_SIZE((*regs)->bank) ||
- word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 ||
- !assert) {
+ if (bank >= FUSE_BANKS ||
+ word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 2 ||
+ !assert) {
printf("mxc_ocotp %s(): Invalid argument\n", caller);
return -EINVAL;
}
+ if (is_mx6ull() || is_mx6sll()) {
+ if ((bank == 7 || bank == 8) &&
+ word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 3) {
+ printf("mxc_ocotp %s(): Invalid argument\n", caller);
+ return -EINVAL;
+ }
+ }
+
enable_ocotp_clk(1);
wait_busy(*regs, 1);
err = !!(readl(®s->ctrl) & BM_CTRL_ERROR);
clear_error(regs);
- enable_ocotp_clk(0);
-
+#ifdef CONFIG_MX7ULP
+ /* Need to power down the OTP memory */
+ writel(1, ®s->pdn);
+#endif
if (err) {
printf("mxc_ocotp %s(): Access protect error\n", caller);
return -EIO;
{
struct ocotp_regs *regs;
int ret;
+ u32 phy_bank;
+ u32 phy_word;
ret = prepare_read(®s, bank, word, val, __func__);
if (ret)
return ret;
- *val = readl(®s->bank[bank].fuse_regs[word << 2]);
+ phy_bank = fuse_bank_physical(bank);
+ phy_word = fuse_word_physical(bank, word);
+ *val = readl(®s->bank[phy_bank].fuse_regs[phy_word << 2]);
+
+#ifdef CONFIG_MX7ULP
+ if (readl(®s->out_status) & BM_OUT_STATUS_DED) {
+ writel(BM_OUT_STATUS_DED, ®s->out_status_clr);
+ printf("mxc_ocotp %s(): fuse read wrong\n", __func__);
+ return -EIO;
+ }
+#endif
return finish_access(regs, __func__);
}
+#ifdef CONFIG_MX7
+static void set_timing(struct ocotp_regs *regs)
+{
+ u32 ipg_clk;
+ u32 fsource, prog;
+ u32 timing;
+
+ ipg_clk = mxc_get_clock(MXC_IPG_CLK);
+
+ fsource = DIV_ROUND_UP((ipg_clk / 1000) * BV_TIMING_FSOURCE_NS,
+ + 1000000) + 1;
+ prog = DIV_ROUND_CLOSEST(ipg_clk * BV_TIMING_PROG_US, 1000000) + 1;
+
+ timing = BF(fsource, TIMING_FSOURCE) | BF(prog, TIMING_PROG);
+
+ clrsetbits_le32(®s->timing, BM_TIMING_FSOURCE | BM_TIMING_PROG,
+ timing);
+}
+#elif defined(CONFIG_MX7ULP)
+static void set_timing(struct ocotp_regs *regs)
+{
+ /* No timing set for MX7ULP */
+}
+
+#else
static void set_timing(struct ocotp_regs *regs)
{
u32 ipg_clk;
clrsetbits_le32(®s->timing, BM_TIMING_STROBE_READ | BM_TIMING_RELAX |
BM_TIMING_STROBE_PROG, timing);
}
+#endif
static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word,
int write)
{
u32 wr_unlock = write ? BV_CTRL_WR_UNLOCK_KEY : 0;
- u32 addr = bank << 3 | word;
+#ifdef CONFIG_MX7
+ u32 addr = bank;
+#elif defined CONFIG_MX8M
+ u32 addr = bank << 2 | word;
+#else
+ u32 addr;
+ /* Bank 7 and Bank 8 only supports 4 words each for i.MX6ULL */
+ if ((is_mx6ull() || is_mx6sll()) && (bank > 7)) {
+ bank = bank - 1;
+ word += 4;
+ }
+ addr = bank << 3 | word;
+#endif
set_timing(regs);
clrsetbits_le32(®s->ctrl, BM_CTRL_WR_UNLOCK | BM_CTRL_ADDR,
setup_direct_access(regs, bank, word, false);
writel(BM_READ_CTRL_READ_FUSE, ®s->read_ctrl);
wait_busy(regs, 1);
+#ifdef CONFIG_MX7
+ *val = readl((®s->read_fuse_data0) + (word << 2));
+#else
*val = readl(®s->read_fuse_data);
+#endif
+
+#ifdef CONFIG_MX7ULP
+ if (readl(®s->out_status) & BM_OUT_STATUS_DED) {
+ writel(BM_OUT_STATUS_DED, ®s->out_status_clr);
+ printf("mxc_ocotp %s(): fuse read wrong\n", __func__);
+ return -EIO;
+ }
+#endif
return finish_access(regs, __func__);
}
static int prepare_write(struct ocotp_regs **regs, u32 bank, u32 word,
const char *caller)
{
+#ifdef CONFIG_MX7ULP
+ u32 val;
+ int ret;
+
+ /* Only bank 0 and 1 are redundancy mode, others are ECC mode */
+ if (bank != 0 && bank != 1) {
+ ret = fuse_sense(bank, word, &val);
+ if (ret)
+ return ret;
+
+ if (val != 0) {
+ printf("mxc_ocotp: The word has been programmed, no more write\n");
+ return -EPERM;
+ }
+ }
+#endif
+
return prepare_access(regs, bank, word, true, caller);
}
return ret;
setup_direct_access(regs, bank, word, true);
+#ifdef CONFIG_MX7
+ switch (word) {
+ case 0:
+ writel(0, ®s->data1);
+ writel(0, ®s->data2);
+ writel(0, ®s->data3);
+ writel(val, ®s->data0);
+ break;
+ case 1:
+ writel(val, ®s->data1);
+ writel(0, ®s->data2);
+ writel(0, ®s->data3);
+ writel(0, ®s->data0);
+ break;
+ case 2:
+ writel(0, ®s->data1);
+ writel(val, ®s->data2);
+ writel(0, ®s->data3);
+ writel(0, ®s->data0);
+ break;
+ case 3:
+ writel(0, ®s->data1);
+ writel(0, ®s->data2);
+ writel(val, ®s->data3);
+ writel(0, ®s->data0);
+ break;
+ }
+ wait_busy(regs, BV_TIMING_PROG_US);
+#else
writel(val, ®s->data);
wait_busy(regs, BV_TIMING_STROBE_PROG_US);
+#endif
udelay(WRITE_POSTAMBLE_US);
+#ifdef CONFIG_MX7ULP
+ if (readl(®s->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {
+ writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), ®s->out_status_clr);
+ printf("mxc_ocotp %s(): fuse write is failed\n", __func__);
+ return -EIO;
+ }
+#endif
+
return finish_access(regs, __func__);
}
{
struct ocotp_regs *regs;
int ret;
+ u32 phy_bank;
+ u32 phy_word;
ret = prepare_write(®s, bank, word, __func__);
if (ret)
return ret;
- writel(val, ®s->bank[bank].fuse_regs[word << 2]);
+ phy_bank = fuse_bank_physical(bank);
+ phy_word = fuse_word_physical(bank, word);
+
+ writel(val, ®s->bank[phy_bank].fuse_regs[phy_word << 2]);
+
+#ifdef CONFIG_MX7ULP
+ if (readl(®s->out_status) & (BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED)) {
+ writel((BM_OUT_STATUS_PROGFAIL | BM_OUT_STATUS_LOCKED), ®s->out_status_clr);
+ printf("mxc_ocotp %s(): fuse write is failed\n", __func__);
+ return -EIO;
+ }
+#endif
return finish_access(regs, __func__);
}
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