SMDK5420 has a new Security Management Unit added
for dwmmc driver, hence, configuring the control
registers to support booting via eMMC.
Signed-off-by: Alim Akhtar <alim.akh...@samsung.com>
Signed-off-by: Rajeshwari Shinde <rajeshwar...@samsung.com>
---
Changes in V3:
- New patch.
drivers/mmc/dw_mmc.c | 7 +++++++
include/dwmmc.h | 12 ++++++++++++
2 files changed, 19 insertions(+)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index a82ee17..d763949 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -300,6 +300,13 @@ static int dwmci_init(struct mmc *mmc)
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
u32 fifo_size;
+ dwmci_writel(host, EMMCP_MPSBEGIN0, 0);
+ dwmci_writel(host, EMMCP_SEND0, 0);
+ dwmci_writel(host, EMMCP_CTRL0,
+ MPSCTRL_SECURE_READ_BIT | MPSCTRL_SECURE_WRITE_BIT |
+ MPSCTRL_NON_SECURE_READ_BIT | MPSCTRL_NON_SECURE_WRITE_BIT |
+ MPSCTRL_VALID);
+
dwmci_writel(host, DWMCI_PWREN, 1);
if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
diff --git a/include/dwmmc.h b/include/dwmmc.h
index 08ced0b..1a67cbf 100644
--- a/include/dwmmc.h
+++ b/include/dwmmc.h
@@ -49,6 +49,9 @@
#define DWMCI_DSCADDR 0x094
#define DWMCI_BUFADDR 0x098
#define DWMCI_DATA 0x200
+#define EMMCP_MPSBEGIN0 0x1200
+#define EMMCP_SEND0 0x1204
+#define EMMCP_CTRL0 0x120C
/* Interrupt Mask register */
#define DWMCI_INTMSK_ALL 0xffffffff
@@ -123,6 +126,15 @@
#define DWMCI_BMOD_IDMAC_FB (1 << 1)
#define DWMCI_BMOD_IDMAC_EN (1 << 7)
+#define MPSCTRL_SECURE_READ_BIT (0x1<<7)
+#define MPSCTRL_SECURE_WRITE_BIT (0x1<<6)
+#define MPSCTRL_NON_SECURE_READ_BIT (0x1<<5)
+#define MPSCTRL_NON_SECURE_WRITE_BIT (0x1<<4)
+#define MPSCTRL_USE_FUSE_KEY (0x1<<3)
+#define MPSCTRL_ECB_MODE (0x1<<2)
+#define MPSCTRL_ENCRYPTION (0x1<<1)
+#define MPSCTRL_VALID (0x1<<0)
+
struct dwmci_host {
char *name;
void *ioaddr;
--
1.7.12.4
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