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-rw-r--r--arch/powerpc/boot/ebony.c60
1 files changed, 0 insertions, 60 deletions
diff --git a/arch/powerpc/boot/ebony.c b/arch/powerpc/boot/ebony.c
index 68beb4947190..f61364c47a76 100644
--- a/arch/powerpc/boot/ebony.c
+++ b/arch/powerpc/boot/ebony.c
@@ -31,66 +31,6 @@
31 31
32static u8 *ebony_mac0, *ebony_mac1; 32static u8 *ebony_mac0, *ebony_mac1;
33 33
34/* Calculate 440GP clocks */
35void ibm440gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
36{
37 u32 sys0 = mfdcr(DCRN_CPC0_SYS0);
38 u32 cr0 = mfdcr(DCRN_CPC0_CR0);
39 u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
40 u32 opdv = CPC0_SYS0_OPDV(sys0);
41 u32 epdv = CPC0_SYS0_EPDV(sys0);
42
43 if (sys0 & CPC0_SYS0_BYPASS) {
44 /* Bypass system PLL */
45 cpu = plb = sysclk;
46 } else {
47 if (sys0 & CPC0_SYS0_EXTSL)
48 /* PerClk */
49 m = CPC0_SYS0_FWDVB(sys0) * opdv * epdv;
50 else
51 /* CPU clock */
52 m = CPC0_SYS0_FBDV(sys0) * CPC0_SYS0_FWDVA(sys0);
53 cpu = sysclk * m / CPC0_SYS0_FWDVA(sys0);
54 plb = sysclk * m / CPC0_SYS0_FWDVB(sys0);
55 }
56
57 opb = plb / opdv;
58 ebc = opb / epdv;
59
60 /* FIXME: Check if this is for all 440GP, or just Ebony */
61 if ((mfpvr() & 0xf0000fff) == 0x40000440)
62 /* Rev. B 440GP, use external system clock */
63 tb = sysclk;
64 else
65 /* Rev. C 440GP, errata force us to use internal clock */
66 tb = cpu;
67
68 if (cr0 & CPC0_CR0_U0EC)
69 /* External UART clock */
70 uart0 = ser_clk;
71 else
72 /* Internal UART clock */
73 uart0 = plb / CPC0_CR0_UDIV(cr0);
74
75 if (cr0 & CPC0_CR0_U1EC)
76 /* External UART clock */
77 uart1 = ser_clk;
78 else
79 /* Internal UART clock */
80 uart1 = plb / CPC0_CR0_UDIV(cr0);
81
82 printf("PPC440GP: SysClk = %dMHz (%x)\n\r",
83 (sysclk + 500000) / 1000000, sysclk);
84
85 dt_fixup_cpu_clocks(cpu, tb, 0);
86
87 dt_fixup_clock("/plb", plb);
88 dt_fixup_clock("/plb/opb", opb);
89 dt_fixup_clock("/plb/opb/ebc", ebc);
90 dt_fixup_clock("/plb/opb/serial@40000200", uart0);
91 dt_fixup_clock("/plb/opb/serial@40000300", uart1);
92}
93
94#define EBONY_FPGA_PATH "/plb/opb/ebc/fpga" 34#define EBONY_FPGA_PATH "/plb/opb/ebc/fpga"
95#define EBONY_FPGA_FLASH_SEL 0x01 35#define EBONY_FPGA_FLASH_SEL 0x01
96#define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash" 36#define EBONY_SMALL_FLASH_PATH "/plb/opb/ebc/small-flash"