diff options
Diffstat (limited to 'arch/powerpc/boot/cuboot-52xx.c')
| -rw-r--r-- | arch/powerpc/boot/cuboot-52xx.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/powerpc/boot/cuboot-52xx.c b/arch/powerpc/boot/cuboot-52xx.c new file mode 100644 index 00000000000..9256a26d40e --- /dev/null +++ b/arch/powerpc/boot/cuboot-52xx.c @@ -0,0 +1,59 @@ +/* + * Old U-boot compatibility for MPC5200 + * + * Author: Grant Likely <grant.likely@secretlab.ca> + * + * Copyright (c) 2007 Secret Lab Technologies Ltd. + * Copyright (c) 2007 Freescale Semiconductor, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ops.h" +#include "stdio.h" +#include "io.h" +#include "cuboot.h" + +#define TARGET_PPC_MPC52xx +#include "ppcboot.h" + +static bd_t bd; + +static void platform_fixups(void) +{ + void *soc, *reg; + int div; + u32 sysfreq; + + + dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); + dt_fixup_mac_addresses(bd.bi_enetaddr); + dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq); + + /* Unfortunately, the specific model number is encoded in the + * soc node name in existing dts files -- once that is fixed, + * this can do a simple path lookup. + */ + soc = find_node_by_devtype(NULL, "soc"); + if (soc) { + setprop(soc, "bus-frequency", &bd.bi_ipbfreq, + sizeof(bd.bi_ipbfreq)); + + if (!dt_xlate_reg(soc, 0, (void*)®, NULL)) + return; + div = in_8(reg + 0x204) & 0x0020 ? 8 : 4; + sysfreq = bd.bi_busfreq * div; + setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq)); + } +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + CUBOOT_INIT(); + ft_init(_dtb_start, _dtb_end - _dtb_start, 32); + serial_console_init(); + platform_ops.fixups = platform_fixups; +} |