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Diffstat (limited to 'arch/powerpc/boot/treeboot-walnut.c')
-rw-r--r--arch/powerpc/boot/treeboot-walnut.c49
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/powerpc/boot/treeboot-walnut.c b/arch/powerpc/boot/treeboot-walnut.c
index 70ffce343c0a..330485f47825 100644
--- a/arch/powerpc/boot/treeboot-walnut.c
+++ b/arch/powerpc/boot/treeboot-walnut.c
@@ -20,55 +20,6 @@
20 20
21BSS_STACK(4096); 21BSS_STACK(4096);
22 22
23void ibm405gp_fixup_clocks(unsigned int sysclk, unsigned int ser_clk)
24{
25 u32 pllmr = mfdcr(DCRN_CPC0_PLLMR);
26 u32 cpc0_cr0 = mfdcr(DCRN_405_CPC0_CR0);
27 u32 cpc0_cr1 = mfdcr(DCRN_405_CPC0_CR1);
28 u32 cpu, plb, opb, ebc, tb, uart0, uart1, m;
29 u32 fwdv, fbdv, cbdv, opdv, epdv, udiv;
30
31 fwdv = (8 - ((pllmr & 0xe0000000) >> 29));
32 fbdv = (pllmr & 0x1e000000) >> 25;
33 cbdv = ((pllmr & 0x00060000) >> 17) + 1;
34 opdv = ((pllmr & 0x00018000) >> 15) + 1;
35 epdv = ((pllmr & 0x00001800) >> 13) + 2;
36 udiv = ((cpc0_cr0 & 0x3e) >> 1) + 1;
37
38 m = fwdv * fbdv * cbdv;
39
40 cpu = sysclk * m / fwdv;
41 plb = cpu / cbdv;
42 opb = plb / opdv;
43 ebc = plb / epdv;
44
45 if (cpc0_cr0 & 0x80) {
46 /* uart0 uses the external clock */
47 uart0 = ser_clk;
48 } else {
49 uart0 = cpu / udiv;
50 }
51
52 if (cpc0_cr0 & 0x40) {
53 /* uart1 uses the external clock */
54 uart1 = ser_clk;
55 } else {
56 uart1 = cpu / udiv;
57 }
58
59 /* setup the timebase clock to tick at the cpu frequency */
60 cpc0_cr1 = cpc0_cr1 & ~0x00800000;
61 mtdcr(DCRN_405_CPC0_CR1, cpc0_cr1);
62 tb = cpu;
63
64 dt_fixup_cpu_clocks(cpu, tb, 0);
65 dt_fixup_clock("/plb", plb);
66 dt_fixup_clock("/plb/opb", opb);
67 dt_fixup_clock("/plb/ebc", ebc);
68 dt_fixup_clock("/plb/opb/serial@ef600300", uart0);
69 dt_fixup_clock("/plb/opb/serial@ef600400", uart1);
70}
71
72static void walnut_flashsel_fixup(void) 23static void walnut_flashsel_fixup(void)
73{ 24{
74 void *devp, *sram; 25 void *devp, *sram;