mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +09:00
a7efd719f4
For files like the drivers/serial/serial.c, it must include the platform file, as the CONFIG_SYS_NS16550_COM1 must reference to the definition in the platform definition files. Include the platform definition file in the config file, so that it would decouple the dependence for the driver files. Signed-off-by: Lei Wen <leiwen@marvell.com>
83 lines
1.7 KiB
C
83 lines
1.7 KiB
C
/*
|
|
* arch/arm/mach-kirkwood/mpp.c
|
|
*
|
|
* MPP functions for Marvell Kirkwood SoCs
|
|
* Referenced from Linux kernel source
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/cpu.h>
|
|
#include <asm/arch/kirkwood.h>
|
|
#include <asm/arch/mpp.h>
|
|
|
|
static u32 kirkwood_variant(void)
|
|
{
|
|
switch (readl(KW_REG_DEVICE_ID) & 0x03) {
|
|
case 1:
|
|
return MPP_F6192_MASK;
|
|
case 2:
|
|
return MPP_F6281_MASK;
|
|
default:
|
|
debug("MPP setup: unknown kirkwood variant\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
#define MPP_CTRL(i) (KW_MPP_BASE + (i* 4))
|
|
#define MPP_NR_REGS (1 + MPP_MAX/8)
|
|
|
|
void kirkwood_mpp_conf(u32 *mpp_list)
|
|
{
|
|
u32 mpp_ctrl[MPP_NR_REGS];
|
|
unsigned int variant_mask;
|
|
int i;
|
|
|
|
variant_mask = kirkwood_variant();
|
|
if (!variant_mask)
|
|
return;
|
|
|
|
debug( "initial MPP regs:");
|
|
for (i = 0; i < MPP_NR_REGS; i++) {
|
|
mpp_ctrl[i] = readl(MPP_CTRL(i));
|
|
debug(" %08x", mpp_ctrl[i]);
|
|
}
|
|
debug("\n");
|
|
|
|
|
|
while (*mpp_list) {
|
|
unsigned int num = MPP_NUM(*mpp_list);
|
|
unsigned int sel = MPP_SEL(*mpp_list);
|
|
int shift;
|
|
|
|
if (num > MPP_MAX) {
|
|
debug("kirkwood_mpp_conf: invalid MPP "
|
|
"number (%u)\n", num);
|
|
continue;
|
|
}
|
|
if (!(*mpp_list & variant_mask)) {
|
|
debug("kirkwood_mpp_conf: requested MPP%u config "
|
|
"unavailable on this hardware\n", num);
|
|
continue;
|
|
}
|
|
|
|
shift = (num & 7) << 2;
|
|
mpp_ctrl[num / 8] &= ~(0xf << shift);
|
|
mpp_ctrl[num / 8] |= sel << shift;
|
|
|
|
mpp_list++;
|
|
}
|
|
|
|
debug(" final MPP regs:");
|
|
for (i = 0; i < MPP_NR_REGS; i++) {
|
|
writel(mpp_ctrl[i], MPP_CTRL(i));
|
|
debug(" %08x", mpp_ctrl[i]);
|
|
}
|
|
debug("\n");
|
|
|
|
}
|