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linux/arch/powerpc/boot/4xx.c
Tiejun Chen 0484c1df47 powerpc/405ex: provide necessary fixup function to support cuImage 
For cuImage format it's necessary to provide clock fixups since u-boot will
not pass necessary clock frequency into the dtb included into cuImage so we
implement the clock fixups as defined in the technical documentation for the
board and update header file with the basic register definitions.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2009-08-31 09:20:55 -04:00

804 lines
20 KiB
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/*
* Copyright 2007 David Gibson, IBM Corporation.
*
* Based on earlier code:
* Matt Porter <mporter@kernel.crashing.org>
* Copyright 2002-2005 MontaVista Software Inc.
*
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
* Copyright (c) 2003, 2004 Zultys Technologies
*
* Copyright (C) 2009 Wind River Systems, Inc.
* Updated for supporting PPC405EX on Kilauea.
* Tiejun Chen <tiejun.chen@windriver.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <stddef.h>
#include "types.h"
#include "string.h"
#include "stdio.h"
#include "ops.h"
#include "reg.h"
#include "dcr.h"
static unsigned long chip_11_errata(unsigned long memsize)
{
unsigned long pvr;
pvr = mfpvr();
switch (pvr & 0xf0000ff0) {
case 0x40000850:
case 0x400008d0:
case 0x200008d0:
memsize -= 4096;
break;
default:
break;
}
return memsize;
}
/* Read the 4xx SDRAM controller to get size of system memory. */
void ibm4xx_sdram_fixup_memsize(void)
{
int i;
unsigned long memsize, bank_config;
memsize = 0;
for (i = 0; i < ARRAY_SIZE(sdram_bxcr); i++) {
bank_config = SDRAM0_READ(sdram_bxcr[i]);
if (bank_config & SDRAM_CONFIG_BANK_ENABLE)
memsize += SDRAM_CONFIG_BANK_SIZE(bank_config);
}
memsize = chip_11_errata(memsize);
dt_fixup_memory(0, memsize);
}
/* Read the 440SPe MQ controller to get size of system memory. */
#define DCRN_MQ0_B0BAS 0x40
#define DCRN_MQ0_B1BAS 0x41
#define DCRN_MQ0_B2BAS 0x42
#define DCRN_MQ0_B3BAS 0x43
static u64 ibm440spe_decode_bas(u32 bas)
{
u64 base = ((u64)(bas & 0xFFE00000u)) << 2;
/* open coded because I'm paranoid about invalid values */
switch ((bas >> 4) & 0xFFF) {
case 0:
return 0;
case 0xffc:
return base + 0x000800000ull;
case 0xff8:
return base + 0x001000000ull;
case 0xff0:
return base + 0x002000000ull;
case 0xfe0:
return base + 0x004000000ull;
case 0xfc0:
return base + 0x008000000ull;
case 0xf80:
return base + 0x010000000ull;
case 0xf00:
return base + 0x020000000ull;
case 0xe00:
return base + 0x040000000ull;
case 0xc00:
return base + 0x080000000ull;
case 0x800:
return base + 0x100000000ull;
}
printf("Memory BAS value 0x%08x unsupported !\n", bas);
return 0;
}
void ibm440spe_fixup_memsize(void)
{
u64 banktop, memsize = 0;
/* Ultimately, we should directly construct the memory node
* so we are able to handle holes in the memory address space
*/
banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B0BAS));
if (banktop > memsize)
memsize = banktop;
banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B1BAS));
if (banktop > memsize)
memsize = banktop;
banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B2BAS));
if (banktop > memsize)
memsize = banktop;
banktop = ibm440spe_decode_bas(mfdcr(DCRN_MQ0_B3BAS));
if (banktop > memsize)
memsize = banktop;
dt_fixup_memory(0, memsize);
}
/* 4xx DDR1/2 Denali memory controller support */
/* DDR0 registers */
#define DDR0_02 2
#define DDR0_08 8
#define DDR0_10 10
#define DDR0_14 14
#define DDR0_42 42
#define DDR0_43 43
/* DDR0_02 */
#define DDR_START 0x1
#define DDR_START_SHIFT 0
#define DDR_MAX_CS_REG 0x3
#define DDR_MAX_CS_REG_SHIFT 24
#define DDR_MAX_COL_REG 0xf
#define DDR_MAX_COL_REG_SHIFT 16
#define DDR_MAX_ROW_REG 0xf
#define DDR_MAX_ROW_REG_SHIFT 8
/* DDR0_08 */
#define DDR_DDR2_MODE 0x1
#define DDR_DDR2_MODE_SHIFT 0
/* DDR0_10 */
#define DDR_CS_MAP 0x3
#define DDR_CS_MAP_SHIFT 8
/* DDR0_14 */
#define DDR_REDUC 0x1
#define DDR_REDUC_SHIFT 16
/* DDR0_42 */
#define DDR_APIN 0x7
#define DDR_APIN_SHIFT 24
/* DDR0_43 */
#define DDR_COL_SZ 0x7
#define DDR_COL_SZ_SHIFT 8
#define DDR_BANK8 0x1
#define DDR_BANK8_SHIFT 0
#define DDR_GET_VAL(val, mask, shift) (((val) >> (shift)) & (mask))
/*
* Some U-Boot versions set the number of chipselects to two
* for Sequoia/Rainier boards while they only have one chipselect
* hardwired. Hardcode the number of chipselects to one
* for sequioa/rainer board models or read the actual value
* from the memory controller register DDR0_10 otherwise.
*/
static inline u32 ibm4xx_denali_get_cs(void)
{
void *devp;
char model[64];
u32 val, cs;
devp = finddevice("/");
if (!devp)
goto read_cs;
if (getprop(devp, "model", model, sizeof(model)) <= 0)
goto read_cs;
model[sizeof(model)-1] = 0;
if (!strcmp(model, "amcc,sequoia") ||
!strcmp(model, "amcc,rainier"))
return 1;
read_cs:
/* get CS value */
val = SDRAM0_READ(DDR0_10);
val = DDR_GET_VAL(val, DDR_CS_MAP, DDR_CS_MAP_SHIFT);
cs = 0;
while (val) {
if (val & 0x1)
cs++;
val = val >> 1;
}
return cs;
}
void ibm4xx_denali_fixup_memsize(void)
{
u32 val, max_cs, max_col, max_row;
u32 cs, col, row, bank, dpath;
unsigned long memsize;
val = SDRAM0_READ(DDR0_02);
if (!DDR_GET_VAL(val, DDR_START, DDR_START_SHIFT))
fatal("DDR controller is not initialized\n");
/* get maximum cs col and row values */
max_cs = DDR_GET_VAL(val, DDR_MAX_CS_REG, DDR_MAX_CS_REG_SHIFT);
max_col = DDR_GET_VAL(val, DDR_MAX_COL_REG, DDR_MAX_COL_REG_SHIFT);
max_row = DDR_GET_VAL(val, DDR_MAX_ROW_REG, DDR_MAX_ROW_REG_SHIFT);
cs = ibm4xx_denali_get_cs();
if (!cs)
fatal("No memory installed\n");
if (cs > max_cs)
fatal("DDR wrong CS configuration\n");
/* get data path bytes */
val = SDRAM0_READ(DDR0_14);
if (DDR_GET_VAL(val, DDR_REDUC, DDR_REDUC_SHIFT))
dpath = 4; /* 32 bits */
else
dpath = 8; /* 64 bits */
/* get address pins (rows) */
val = SDRAM0_READ(DDR0_42);
row = DDR_GET_VAL(val, DDR_APIN, DDR_APIN_SHIFT);
if (row > max_row)
fatal("DDR wrong APIN configuration\n");
row = max_row - row;
/* get collomn size and banks */
val = SDRAM0_READ(DDR0_43);
col = DDR_GET_VAL(val, DDR_COL_SZ, DDR_COL_SZ_SHIFT);
if (col > max_col)
fatal("DDR wrong COL configuration\n");
col = max_col - col;
if (DDR_GET_VAL(val, DDR_BANK8, DDR_BANK8_SHIFT))
bank = 8; /* 8 banks */
else
bank = 4; /* 4 banks */
memsize = cs * (1 << (col+row)) * bank * dpath;
memsize = chip_11_errata(memsize);
dt_fixup_memory(0, memsize);
}
#define SPRN_DBCR0_40X 0x3F2
#define SPRN_DBCR0_44X 0x134
#define DBCR0_RST_SYSTEM 0x30000000
void ibm44x_dbcr_reset(void)
{
unsigned long tmp;
asm volatile (
"mfspr %0,%1\n"
"oris %0,%0,%2@h\n"
"mtspr %1,%0"
: "=&r"(tmp) : "i"(SPRN_DBCR0_44X), "i"(DBCR0_RST_SYSTEM)
);
}
void ibm40x_dbcr_reset(void)
{
unsigned long tmp;
asm volatile (
"mfspr %0,%1\n"
"oris %0,%0,%2@h\n"
"mtspr %1,%0"
: "=&r"(tmp) : "i"(SPRN_DBCR0_40X), "i"(DBCR0_RST_SYSTEM)
);
}
#define EMAC_RESET 0x20000000
void ibm4xx_quiesce_eth(u32 *emac0, u32 *emac1)
{
/* Quiesce the MAL and EMAC(s) since PIBS/OpenBIOS don't
* do this for us
*/
if (emac0)
*emac0 = EMAC_RESET;
if (emac1)
*emac1 = EMAC_RESET;
mtdcr(DCRN_MAL0_CFG, MAL_RESET);
while (mfdcr(DCRN_MAL0_CFG) & MAL_RESET)
; /* loop until reset takes effect */
}
/* Read 4xx EBC bus bridge registers to get mappings of the peripheral
* banks into the OPB address space */
void ibm4xx_fixup_ebc_ranges(const char *ebc)
{
void *devp;
u32 bxcr;
u32 ranges[EBC_NUM_BANKS*4];
u32 *p = ranges;
int i;
for (i = 0; i < EBC_NUM_BANKS; i++) {
mtdcr(DCRN_EBC0_CFGADDR, EBC_BXCR(i));
bxcr = mfdcr(DCRN_EBC0_CFGDATA);
if ((bxcr & EBC_BXCR_BU) != EBC_BXCR_BU_OFF) {
*p++ = i;
*p++ = 0;
*p++ = bxcr & EBC_BXCR_BAS;
*p++ = EBC_BXCR_BANK_SIZE(bxcr);
}
}
devp = finddevice(ebc);
if (! devp)
fatal("Couldn't locate EBC node %s\n\r", ebc);
setprop(devp, "ranges", ranges, (p - ranges) * sizeof(u32));
}
/* Calculate 440GP clocks */
void ibm440gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk)
{
u32 sys0 = mfdcr(DCRN_CPC0_SYS0);
u32 cr0 = mfdcr(DCRN_CPC0_CR0);
u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
u32 opdv = CPC0_SYS0_OPDV(sys0);
u32 epdv = CPC0_SYS0_EPDV(sys0);
if (sys0 & CPC0_SYS0_BYPASS) {
/* Bypass system PLL */
cpu = plb = sys_clk;
} else {
if (sys0 & CPC0_SYS0_EXTSL)
/* PerClk */
m = CPC0_SYS0_FWDVB(sys0) * opdv * epdv;
else
/* CPU clock */
m = CPC0_SYS0_FBDV(sys0) * CPC0_SYS0_FWDVA(sys0);
cpu = sys_clk * m / CPC0_SYS0_FWDVA(sys0);
plb = sys_clk * m / CPC0_SYS0_FWDVB(sys0);
}
opb = plb / opdv;
ebc = opb / epdv;
/* FIXME: Check if this is for all 440GP, or just Ebony */
if ((mfpvr() & 0xf0000fff) == 0x40000440)
/* Rev. B 440GP, use external system clock */
tb = sys_clk;
else
/* Rev. C 440GP, errata force us to use internal clock */
tb = cpu;
if (cr0 & CPC0_CR0_U0EC)
/* External UART clock */
uart0 = ser_clk;
else
/* Internal UART clock */
uart0 = plb / CPC0_CR0_UDIV(cr0);
if (cr0 & CPC0_CR0_U1EC)
/* External UART clock */
uart1 = ser_clk;
else
/* Internal UART clock */
uart1 = plb / CPC0_CR0_UDIV(cr0);
printf("PPC440GP: SysClk = %dMHz (%x)\n\r",
(sys_clk + 500000) / 1000000, sys_clk);
dt_fixup_cpu_clocks(cpu, tb, 0);
dt_fixup_clock("/plb", plb);
dt_fixup_clock("/plb/opb", opb);
dt_fixup_clock("/plb/opb/ebc", ebc);
dt_fixup_clock("/plb/opb/serial@40000200", uart0);
dt_fixup_clock("/plb/opb/serial@40000300", uart1);
}
#define SPRN_CCR1 0x378
static inline u32 __fix_zero(u32 v, u32 def)
{
return v ? v : def;
}
static unsigned int __ibm440eplike_fixup_clocks(unsigned int sys_clk,
unsigned int tmr_clk,
int per_clk_from_opb)
{
/* PLL config */
u32 pllc = CPR0_READ(DCRN_CPR0_PLLC);
u32 plld = CPR0_READ(DCRN_CPR0_PLLD);
/* Dividers */
u32 fbdv = __fix_zero((plld >> 24) & 0x1f, 32);
u32 fwdva = __fix_zero((plld >> 16) & 0xf, 16);
u32 fwdvb = __fix_zero((plld >> 8) & 7, 8);
u32 lfbdv = __fix_zero(plld & 0x3f, 64);
u32 pradv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PRIMAD) >> 24) & 7, 8);
u32 prbdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PRIMBD) >> 24) & 7, 8);
u32 opbdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_OPBD) >> 24) & 3, 4);
u32 perdv0 = __fix_zero((CPR0_READ(DCRN_CPR0_PERD) >> 24) & 3, 4);
/* Input clocks for primary dividers */
u32 clk_a, clk_b;
/* Resulting clocks */
u32 cpu, plb, opb, ebc, vco;
/* Timebase */
u32 ccr1, tb = tmr_clk;
if (pllc & 0x40000000) {
u32 m;
/* Feedback path */
switch ((pllc >> 24) & 7) {
case 0:
/* PLLOUTx */
m = ((pllc & 0x20000000) ? fwdvb : fwdva) * lfbdv;
break;
case 1:
/* CPU */
m = fwdva * pradv0;
break;
case 5:
/* PERClk */
m = fwdvb * prbdv0 * opbdv0 * perdv0;
break;
default:
printf("WARNING ! Invalid PLL feedback source !\n");
goto bypass;
}
m *= fbdv;
vco = sys_clk * m;
clk_a = vco / fwdva;
clk_b = vco / fwdvb;
} else {
bypass:
/* Bypass system PLL */
vco = 0;
clk_a = clk_b = sys_clk;
}
cpu = clk_a / pradv0;
plb = clk_b / prbdv0;
opb = plb / opbdv0;
ebc = (per_clk_from_opb ? opb : plb) / perdv0;
/* Figure out timebase. Either CPU or default TmrClk */
ccr1 = mfspr(SPRN_CCR1);
/* If passed a 0 tmr_clk, force CPU clock */
if (tb == 0) {
ccr1 &= ~0x80u;
mtspr(SPRN_CCR1, ccr1);
}
if ((ccr1 & 0x0080) == 0)
tb = cpu;
dt_fixup_cpu_clocks(cpu, tb, 0);
dt_fixup_clock("/plb", plb);
dt_fixup_clock("/plb/opb", opb);
dt_fixup_clock("/plb/opb/ebc", ebc);
return plb;
}
static void eplike_fixup_uart_clk(int index, const char *path,
unsigned int ser_clk,
unsigned int plb_clk)
{
unsigned int sdr;
unsigned int clock;
switch (index) {
case 0:
sdr = SDR0_READ(DCRN_SDR0_UART0);
break;
case 1:
sdr = SDR0_READ(DCRN_SDR0_UART1);
break;
case 2:
sdr = SDR0_READ(DCRN_SDR0_UART2);
break;
case 3:
sdr = SDR0_READ(DCRN_SDR0_UART3);
break;
default:
return;
}
if (sdr & 0x00800000u)
clock = ser_clk;
else
clock = plb_clk / __fix_zero(sdr & 0xff, 256);
dt_fixup_clock(path, clock);
}
void ibm440ep_fixup_clocks(unsigned int sys_clk,
unsigned int ser_clk,
unsigned int tmr_clk)
{
unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 0);
/* serial clocks beed fixup based on int/ext */
eplike_fixup_uart_clk(0, "/plb/opb/serial@ef600300", ser_clk, plb_clk);
eplike_fixup_uart_clk(1, "/plb/opb/serial@ef600400", ser_clk, plb_clk);
eplike_fixup_uart_clk(2, "/plb/opb/serial@ef600500", ser_clk, plb_clk);
eplike_fixup_uart_clk(3, "/plb/opb/serial@ef600600", ser_clk, plb_clk);
}
void ibm440gx_fixup_clocks(unsigned int sys_clk,
unsigned int ser_clk,
unsigned int tmr_clk)
{
unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 1);
/* serial clocks beed fixup based on int/ext */
eplike_fixup_uart_clk(0, "/plb/opb/serial@40000200", ser_clk, plb_clk);
eplike_fixup_uart_clk(1, "/plb/opb/serial@40000300", ser_clk, plb_clk);
}
void ibm440spe_fixup_clocks(unsigned int sys_clk,
unsigned int ser_clk,
unsigned int tmr_clk)
{
unsigned int plb_clk = __ibm440eplike_fixup_clocks(sys_clk, tmr_clk, 1);
/* serial clocks beed fixup based on int/ext */
eplike_fixup_uart_clk(0, "/plb/opb/serial@10000200", ser_clk, plb_clk);
eplike_fixup_uart_clk(1, "/plb/opb/serial@10000300", ser_clk, plb_clk);
eplike_fixup_uart_clk(2, "/plb/opb/serial@10000600", ser_clk, plb_clk);
}
void ibm405gp_fixup_clocks(unsigned int sys_clk, unsigned int ser_clk)
{
u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
u32 psr = mfdcr(DCRN_405_CPC0_PSR);
u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
u32 fwdv, fwdvb, fbdv, cbdv, opdv, epdv, ppdv, udiv;
fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
fbdv = (pllmr & 0x1e000000) >> 25;
if (fbdv == 0)
fbdv = 16;
cbdv = ((pllmr & 0x00060000) >> 17) + 1; /* CPU:PLB */
opdv = ((pllmr & 0x00018000) >> 15) + 1; /* PLB:OPB */
ppdv = ((pllmr & 0x00001800) >> 13) + 1; /* PLB:PCI */
epdv = ((pllmr & 0x00001800) >> 11) + 2; /* PLB:EBC */
udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
/* check for 405GPr */
if ((mfpvr() & 0xfffffff0) == (0x50910951 & 0xfffffff0)) {
fwdvb = 8 - (pllmr & 0x00000007);
if (!(psr & 0x00001000)) /* PCI async mode enable == 0 */
if (psr & 0x00000020) /* New mode enable */
m = fwdvb * 2 * ppdv;
else
m = fwdvb * cbdv * ppdv;
else if (psr & 0x00000020) /* New mode enable */
if (psr & 0x00000800) /* PerClk synch mode */
m = fwdvb * 2 * epdv;
else
m = fbdv * fwdv;
else if (epdv == fbdv)
m = fbdv * cbdv * epdv;
else
m = fbdv * fwdvb * cbdv;
cpu = sys_clk * m / fwdv;
plb = sys_clk * m / (fwdvb * cbdv);
} else {
m = fwdv * fbdv * cbdv;
cpu = sys_clk * m / fwdv;
plb = cpu / cbdv;
}
opb = plb / opdv;
ebc = plb / epdv;
if (cpc0_cr0 & 0x80)
/* uart0 uses the external clock */
uart0 = ser_clk;
else
uart0 = cpu / udiv;
if (cpc0_cr0 & 0x40)
/* uart1 uses the external clock */
uart1 = ser_clk;
else
uart1 = cpu / udiv;
/* setup the timebase clock to tick at the cpu frequency */
cpc0_cr1 = cpc0_cr1 & ~0x00800000;
mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
tb = cpu;
dt_fixup_cpu_clocks(cpu, tb, 0);
dt_fixup_clock("/plb", plb);
dt_fixup_clock("/plb/opb", opb);
dt_fixup_clock("/plb/ebc", ebc);
dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
}
void ibm405ep_fixup_clocks(unsigned int sys_clk)
{
u32 pllmr0 = mfdcr(DCRN_CPC0_PLLMR0);
u32 pllmr1 = mfdcr(DCRN_CPC0_PLLMR1);
u32 cpc0_ucr = mfdcr(DCRN_CPC0_UCR);
u32 cpu, plb, opb, ebc, uart0, uart1;
u32 fwdva, fwdvb, fbdv, cbdv, opdv, epdv;
u32 pllmr0_ccdv, tb, m;
fwdva = 8 - ((pllmr1 & 0x00070000) >> 16);
fwdvb = 8 - ((pllmr1 & 0x00007000) >> 12);
fbdv = (pllmr1 & 0x00f00000) >> 20;
if (fbdv == 0)
fbdv = 16;
cbdv = ((pllmr0 & 0x00030000) >> 16) + 1; /* CPU:PLB */
epdv = ((pllmr0 & 0x00000300) >> 8) + 2; /* PLB:EBC */
opdv = ((pllmr0 & 0x00003000) >> 12) + 1; /* PLB:OPB */
m = fbdv * fwdvb;
pllmr0_ccdv = ((pllmr0 & 0x00300000) >> 20) + 1;
if (pllmr1 & 0x80000000)
cpu = sys_clk * m / (fwdva * pllmr0_ccdv);
else
cpu = sys_clk / pllmr0_ccdv;
plb = cpu / cbdv;
opb = plb / opdv;
ebc = plb / epdv;
tb = cpu;
uart0 = cpu / (cpc0_ucr & 0x0000007f);
uart1 = cpu / ((cpc0_ucr & 0x00007f00) >> 8);
dt_fixup_cpu_clocks(cpu, tb, 0);
dt_fixup_clock("/plb", plb);
dt_fixup_clock("/plb/opb", opb);
dt_fixup_clock("/plb/ebc", ebc);
dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
}
static u8 ibm405ex_fwdv_multi_bits[] = {
/* values for: 1 - 16 */
0x01, 0x02, 0x0e, 0x09, 0x04, 0x0b, 0x10, 0x0d, 0x0c, 0x05,
0x06, 0x0f, 0x0a, 0x07, 0x08, 0x03
};
u32 ibm405ex_get_fwdva(unsigned long cpr_fwdv)
{
u32 index;
for (index = 0; index < ARRAY_SIZE(ibm405ex_fwdv_multi_bits); index++)
if (cpr_fwdv == (u32)ibm405ex_fwdv_multi_bits[index])
return index + 1;
return 0;
}
static u8 ibm405ex_fbdv_multi_bits[] = {
/* values for: 1 - 100 */
0x00, 0xff, 0x7e, 0xfd, 0x7a, 0xf5, 0x6a, 0xd5, 0x2a, 0xd4,
0x29, 0xd3, 0x26, 0xcc, 0x19, 0xb3, 0x67, 0xce, 0x1d, 0xbb,
0x77, 0xee, 0x5d, 0xba, 0x74, 0xe9, 0x52, 0xa5, 0x4b, 0x96,
0x2c, 0xd8, 0x31, 0xe3, 0x46, 0x8d, 0x1b, 0xb7, 0x6f, 0xde,
0x3d, 0xfb, 0x76, 0xed, 0x5a, 0xb5, 0x6b, 0xd6, 0x2d, 0xdb,
0x36, 0xec, 0x59, 0xb2, 0x64, 0xc9, 0x12, 0xa4, 0x48, 0x91,
0x23, 0xc7, 0x0e, 0x9c, 0x38, 0xf0, 0x61, 0xc2, 0x05, 0x8b,
0x17, 0xaf, 0x5f, 0xbe, 0x7c, 0xf9, 0x72, 0xe5, 0x4a, 0x95,
0x2b, 0xd7, 0x2e, 0xdc, 0x39, 0xf3, 0x66, 0xcd, 0x1a, 0xb4,
0x68, 0xd1, 0x22, 0xc4, 0x09, 0x93, 0x27, 0xcf, 0x1e, 0xbc,
/* values for: 101 - 200 */
0x78, 0xf1, 0x62, 0xc5, 0x0a, 0x94, 0x28, 0xd0, 0x21, 0xc3,
0x06, 0x8c, 0x18, 0xb0, 0x60, 0xc1, 0x02, 0x84, 0x08, 0x90,
0x20, 0xc0, 0x01, 0x83, 0x07, 0x8f, 0x1f, 0xbf, 0x7f, 0xfe,
0x7d, 0xfa, 0x75, 0xea, 0x55, 0xaa, 0x54, 0xa9, 0x53, 0xa6,
0x4c, 0x99, 0x33, 0xe7, 0x4e, 0x9d, 0x3b, 0xf7, 0x6e, 0xdd,
0x3a, 0xf4, 0x69, 0xd2, 0x25, 0xcb, 0x16, 0xac, 0x58, 0xb1,
0x63, 0xc6, 0x0d, 0x9b, 0x37, 0xef, 0x5e, 0xbd, 0x7b, 0xf6,
0x6d, 0xda, 0x35, 0xeb, 0x56, 0xad, 0x5b, 0xb6, 0x6c, 0xd9,
0x32, 0xe4, 0x49, 0x92, 0x24, 0xc8, 0x11, 0xa3, 0x47, 0x8e,
0x1c, 0xb8, 0x70, 0xe1, 0x42, 0x85, 0x0b, 0x97, 0x2f, 0xdf,
/* values for: 201 - 255 */
0x3e, 0xfc, 0x79, 0xf2, 0x65, 0xca, 0x15, 0xab, 0x57, 0xae,
0x5c, 0xb9, 0x73, 0xe6, 0x4d, 0x9a, 0x34, 0xe8, 0x51, 0xa2,
0x44, 0x89, 0x13, 0xa7, 0x4f, 0x9e, 0x3c, 0xf8, 0x71, 0xe2,
0x45, 0x8a, 0x14, 0xa8, 0x50, 0xa1, 0x43, 0x86, 0x0c, 0x98,
0x30, 0xe0, 0x41, 0x82, 0x04, 0x88, 0x10, 0xa0, 0x40, 0x81,
0x03, 0x87, 0x0f, 0x9f, 0x3f /* END */
};
u32 ibm405ex_get_fbdv(unsigned long cpr_fbdv)
{
u32 index;
for (index = 0; index < ARRAY_SIZE(ibm405ex_fbdv_multi_bits); index++)
if (cpr_fbdv == (u32)ibm405ex_fbdv_multi_bits[index])
return index + 1;
return 0;
}
void ibm405ex_fixup_clocks(unsigned int sys_clk, unsigned int uart_clk)
{
/* PLL config */
u32 pllc = CPR0_READ(DCRN_CPR0_PLLC);
u32 plld = CPR0_READ(DCRN_CPR0_PLLD);
u32 cpud = CPR0_READ(DCRN_CPR0_PRIMAD);
u32 plbd = CPR0_READ(DCRN_CPR0_PRIMBD);
u32 opbd = CPR0_READ(DCRN_CPR0_OPBD);
u32 perd = CPR0_READ(DCRN_CPR0_PERD);
/* Dividers */
u32 fbdv = ibm405ex_get_fbdv(__fix_zero((plld >> 24) & 0xff, 1));
u32 fwdva = ibm405ex_get_fwdva(__fix_zero((plld >> 16) & 0x0f, 1));
u32 cpudv0 = __fix_zero((cpud >> 24) & 7, 8);
/* PLBDV0 is hardwared to 010. */
u32 plbdv0 = 2;
u32 plb2xdv0 = __fix_zero((plbd >> 16) & 7, 8);
u32 opbdv0 = __fix_zero((opbd >> 24) & 3, 4);
u32 perdv0 = __fix_zero((perd >> 24) & 3, 4);
/* Resulting clocks */
u32 cpu, plb, opb, ebc, vco, tb, uart0, uart1;
/* PLL's VCO is the source for primary forward ? */
if (pllc & 0x40000000) {
u32 m;
/* Feedback path */
switch ((pllc >> 24) & 7) {
case 0:
/* PLLOUTx */
m = fbdv;
break;
case 1:
/* CPU */
m = fbdv * fwdva * cpudv0;
break;
case 5:
/* PERClk */
m = fbdv * fwdva * plb2xdv0 * plbdv0 * opbdv0 * perdv0;
break;
default:
printf("WARNING ! Invalid PLL feedback source !\n");
goto bypass;
}
vco = (unsigned int)(sys_clk * m);
} else {
bypass:
/* Bypass system PLL */
vco = 0;
}
/* CPU = VCO / ( FWDVA x CPUDV0) */
cpu = vco / (fwdva * cpudv0);
/* PLB = VCO / ( FWDVA x PLB2XDV0 x PLBDV0) */
plb = vco / (fwdva * plb2xdv0 * plbdv0);
/* OPB = PLB / OPBDV0 */
opb = plb / opbdv0;
/* EBC = OPB / PERDV0 */
ebc = opb / perdv0;
tb = cpu;
uart0 = uart1 = uart_clk;
dt_fixup_cpu_clocks(cpu, tb, 0);
dt_fixup_clock("/plb", plb);
dt_fixup_clock("/plb/opb", opb);
dt_fixup_clock("/plb/opb/ebc", ebc);
dt_fixup_clock("/plb/opb/serial@ef600200", uart0);
dt_fixup_clock("/plb/opb/serial@ef600300", uart1);
}
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