Prevent i2c_init() in fsl_i2c.c from writing to the data segment before relocation. Commit d8c82db4 added the ability for i2c_init() to program the I2C bus speed and save the value in i2c_bus_speed[], which is a global variable. It is an error to write to the data segment before relocation, which is what i2c_init() does when it stores the bus speed in i2c_bus_speed[].
Signed-off-by: Timur Tabi timur@freescale.com ---
Wolfgang, please apply this directly to fix the I2C bug we've been talking about.
drivers/i2c/fsl_i2c.c | 9 +++++++-- 1 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c index 9f2c1ec..9d5df8a 100644 --- a/drivers/i2c/fsl_i2c.c +++ b/drivers/i2c/fsl_i2c.c @@ -143,12 +143,15 @@ void i2c_init(int speed, int slaveadd) { struct fsl_i2c *dev; + unsigned int temp;
dev = (struct fsl_i2c *) (CFG_IMMR + CFG_I2C_OFFSET);
writeb(0, &dev->cr); /* stop I2C controller */ udelay(5); /* let it shutdown in peace */ - i2c_bus_speed[0] = set_i2c_bus_speed(dev, gd->i2c1_clk, speed); + temp = set_i2c_bus_speed(dev, gd->i2c1_clk, speed); + if (gd->flags & GD_FLG_RELOC) + i2c_bus_speed[0] = temp; writeb(slaveadd << 1, &dev->adr); /* write slave address */ writeb(0x0, &dev->sr); /* clear status register */ writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */ @@ -158,7 +161,9 @@ i2c_init(int speed, int slaveadd)
writeb(0, &dev->cr); /* stop I2C controller */ udelay(5); /* let it shutdown in peace */ - i2c_bus_speed[1] = set_i2c_bus_speed(dev, gd->i2c2_clk, speed); + temp = set_i2c_bus_speed(dev, gd->i2c2_clk, speed); + if (gd->flags & GD_FLG_RELOC) + i2c_bus_speed[1] = temp; writeb(slaveadd << 1, &dev->adr); /* write slave address */ writeb(0x0, &dev->sr); /* clear status register */ writeb(I2C_CR_MEN, &dev->cr); /* start I2C controller */