[U-Boot] [PATCH v7 1/1] imx: Get fec mac address from fuse
Jason Liu
r64343 at freescale.com
Fri Nov 19 10:45:55 CET 2010
The patch is to support getting FEC MAC address from fuse bank.
Signed-off-by: Jason Liu <r64343 at freescale.com>
---
Changes for v2:
- correct the mac address byte order according to review comments
- add memset(edev, 0. sizeof(*edev)) when do fec_probe,
- fix some code comments
Changes for v3:
- rebase
- address the comments of Stefano, make the imx_get_mac_from_fuse(),
declared independently inside each imx-regs.h to make it specific
for each processor, because it accesses to different structures.
- address the comments of Wolfgang and Stefano, use struct to access
mac_addr fuse.
Changes for v4:
- Address the comments of Wolfgang, use fuse_regs instead of bank addres
and change from fuse1_6 to fuse0_5 naming convention and use fuse_bank0_regs
instead of fuse_bank0 to kill misleading.
Changes for v5:
- Fix the typo error of fuse5_31[0x11] as Wolfgang point out
- Change the print message "got MAC address from EEPROM to
"got MAC address from fuse" which comply with this commit title.
Changes for v6:
- Fix the mx27 res0 array size issue
- Fix one coding style issue
- use 0xff mask to clear that only the LSB of the read value is taken
Changes for v7:
- Fix the mx27 mac_addr offset
- checkpatch
---
arch/arm/cpu/arm926ejs/mx25/generic.c | 12 ++++++++++
arch/arm/cpu/arm926ejs/mx27/generic.c | 12 ++++++++++
arch/arm/cpu/armv7/mx5/soc.c | 14 ++++++++++++
arch/arm/include/asm/arch-mx25/imx-regs.h | 19 +++++++++------
arch/arm/include/asm/arch-mx27/imx-regs.h | 20 +++++++++++------
arch/arm/include/asm/arch-mx5/imx-regs.h | 34 +++++++++++++++++++++++++++++
drivers/net/fec_mxc.c | 17 +------------
7 files changed, 98 insertions(+), 30 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mx25/generic.c b/arch/arm/cpu/arm926ejs/mx25/generic.c
index b80a389..c6e1146 100644
--- a/arch/arm/cpu/arm926ejs/mx25/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx25/generic.c
@@ -260,4 +260,16 @@ void mx25_fec_init_pins (void)
writel (outpadctl, &padctl->pad_fec_tdata1);
}
+
+void imx_get_mac_from_fuse(unsigned char *mac)
+{
+ int i;
+ struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+ struct fuse_bank *bank = &iim->bank[0];
+ struct fuse_bank0_regs *fuse =
+ (struct fuse_bank0_regs *)bank->fuse_regs;
+
+ for (i = 0; i < 6; i++)
+ mac[i] = readl(&fuse->mac_addr[i]) & 0xff;
+}
#endif /* CONFIG_FEC_MXC */
diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c
index ae2ce58..27642bf 100644
--- a/arch/arm/cpu/arm926ejs/mx27/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx27/generic.c
@@ -313,6 +313,18 @@ void mx27_fec_init_pins(void)
for (i = 0; i < ARRAY_SIZE(mode); i++)
imx_gpio_mode(mode[i]);
}
+
+void imx_get_mac_from_fuse(unsigned char *mac)
+{
+ int i;
+ struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+ struct fuse_bank *bank = &iim->bank[0];
+ struct fuse_bank0_regs *fuse =
+ (struct fuse_bank0_regs *)bank->fuse_regs;
+
+ for (i = 0; i < 6; i++)
+ mac[6 - 1 - i] = readl(&fuse->mac_addr[i]) & 0xff;
+}
#endif /* CONFIG_FEC_MXC */
#ifdef CONFIG_MXC_MMC
diff --git a/arch/arm/cpu/armv7/mx5/soc.c b/arch/arm/cpu/armv7/mx5/soc.c
index 7c7a565..2900119 100644
--- a/arch/arm/cpu/armv7/mx5/soc.c
+++ b/arch/arm/cpu/armv7/mx5/soc.c
@@ -100,6 +100,20 @@ int cpu_eth_init(bd_t *bis)
return rc;
}
+#if defined(CONFIG_FEC_MXC)
+void imx_get_mac_from_fuse(unsigned char *mac)
+{
+ int i;
+ struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
+ struct fuse_bank *bank = &iim->bank[1];
+ struct fuse_bank1_regs *fuse =
+ (struct fuse_bank1_regs *)bank->fuse_regs;
+
+ for (i = 0; i < 6; i++)
+ mac[i] = readl(&fuse->mac_addr[i]) & 0xff;
+}
+#endif
+
/*
* Initializes on-chip MMC controllers.
* to override, implement board_mmc_init()
diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h b/arch/arm/include/asm/arch-mx25/imx-regs.h
index f5a2929..55ad115 100644
--- a/arch/arm/include/asm/arch-mx25/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx25/imx-regs.h
@@ -36,6 +36,7 @@
#ifndef __ASSEMBLY__
#ifdef CONFIG_FEC_MXC
extern void mx25_fec_init_pins(void);
+extern void imx_get_mac_from_fuse(unsigned char *mac);
#endif
/* Clock Control Module (CCM) registers */
@@ -129,12 +130,17 @@ struct iim_regs {
u32 iim_srev;
u32 iim_prog_p;
u32 res1[0x1f5];
- u32 iim_bank_area0[0x20];
- u32 res2[0xe0];
- u32 iim_bank_area1[0x20];
- u32 res3[0xe0];
- u32 iim_bank_area2[0x20];
+ struct fuse_bank {
+ u32 fuse_regs[0x20];
+ u32 fuse_rsvd[0xe0];
+ } bank[3];
};
+
+struct fuse_bank0_regs {
+ u32 fuse0_25[0x1a];
+ u32 mac_addr[6];
+};
+
#endif
/* AIPS 1 */
@@ -312,7 +318,4 @@ struct iim_regs {
#define WSR_UNLOCK1 0x5555
#define WSR_UNLOCK2 0xAAAA
-/* FUSE bank offsets */
-#define IIM0_MAC 0x1a
-
#endif /* _IMX_REGS_H */
diff --git a/arch/arm/include/asm/arch-mx27/imx-regs.h b/arch/arm/include/asm/arch-mx27/imx-regs.h
index 6ecddaa..8f40aa7 100644
--- a/arch/arm/include/asm/arch-mx27/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx27/imx-regs.h
@@ -34,6 +34,7 @@ extern void mx27_uart_init_pins(void);
#ifdef CONFIG_FEC_MXC
extern void mx27_fec_init_pins(void);
+extern void imx_get_mac_from_fuse(unsigned char *mac);
#endif /* CONFIG_FEC_MXC */
#ifdef CONFIG_MXC_MMC
@@ -202,9 +203,19 @@ struct iim_regs {
u32 iim_scs1;
u32 iim_scs2;
u32 iim_scs3;
- u32 res[0x1F0];
- u32 iim_bank_area0[0x100];
+ u32 res[0x1f1];
+ struct fuse_bank {
+ u32 fuse_regs[0x20];
+ u32 fuse_rsvd[0xe0];
+ } bank[1];
};
+
+struct fuse_bank0_regs {
+ u32 fuse0_3[5];
+ u32 mac_addr[6];
+ u32 fuse10_31[0x16];
+};
+
#endif
#define IMX_IO_BASE 0x10000000
@@ -512,9 +523,4 @@ struct iim_regs {
#define IIM_ERR_SNSE (1 << 2)
#define IIM_ERR_PARITYE (1 << 1)
-/* Definitions for i.MX27 TO2 */
-#define IIM0_MAC 5
-#define IIM0_SCC_KEY 11
-#define IIM1_SUID 1
-
#endif /* _IMX_REGS_H */
diff --git a/arch/arm/include/asm/arch-mx5/imx-regs.h b/arch/arm/include/asm/arch-mx5/imx-regs.h
index 0b6249a..b45026d 100644
--- a/arch/arm/include/asm/arch-mx5/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx5/imx-regs.h
@@ -205,9 +205,13 @@
#define BOARD_REV_1_0 0x0
#define BOARD_REV_2_0 0x1
+#define IMX_IIM_BASE (IIM_BASE_ADDR)
+
#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
#include <asm/types.h>
+extern void imx_get_mac_from_fuse(unsigned char *mac);
+
#define __REG(x) (*((volatile u32 *)(x)))
#define __REG16(x) (*((volatile u16 *)(x)))
#define __REG8(x) (*((volatile u8 *)(x)))
@@ -275,6 +279,36 @@ struct src {
u32 sisr;
u32 simr;
};
+
+struct iim_regs {
+ u32 stat;
+ u32 statm;
+ u32 err;
+ u32 emask;
+ u32 fctl;
+ u32 ua;
+ u32 la;
+ u32 sdat;
+ u32 prev;
+ u32 srev;
+ u32 preg_p;
+ u32 scs0;
+ u32 scs1;
+ u32 scs2;
+ u32 scs3;
+ u32 res0[0x1f1];
+ struct fuse_bank {
+ u32 fuse_regs[0x20];
+ u32 fuse_rsvd[0xe0];
+ } bank[4];
+};
+
+struct fuse_bank1_regs {
+ u32 fuse0_8[9];
+ u32 mac_addr[6];
+ u32 fuse15_31[0x11];
+};
+
#endif /* __ASSEMBLER__*/
#endif /* __ASM_ARCH_MXC_MX51_H__ */
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index c17f937..0d0f392 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -312,21 +312,8 @@ static void fec_rbd_clean(int last, struct fec_bd *pRbd)
static int fec_get_hwaddr(struct eth_device *dev, unsigned char *mac)
{
-/*
- * The MX27 can store the mac address in internal eeprom
- * This mechanism is not supported now by MX51 or MX25
- */
-#if defined(CONFIG_MX51) || defined(CONFIG_MX25)
- return -1;
-#else
- struct iim_regs *iim = (struct iim_regs *)IMX_IIM_BASE;
- int i;
-
- for (i = 0; i < 6; i++)
- mac[6-1-i] = readl(&iim->iim_bank_area0[IIM0_MAC + i]);
-
+ imx_get_mac_from_fuse(mac);
return !is_valid_ether_addr(mac);
-#endif
}
static int fec_set_hwaddr(struct eth_device *dev)
@@ -754,7 +741,7 @@ static int fec_probe(bd_t *bd)
eth_register(edev);
if (fec_get_hwaddr(edev, ethaddr) == 0) {
- printf("got MAC address from EEPROM: %pM\n", ethaddr);
+ printf("got MAC address from fuse: %pM\n", ethaddr);
memcpy(edev->enetaddr, ethaddr, 6);
}
--
1.7.0.4
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