diff options
Diffstat (limited to 'arch/powerpc/boot/cuboot-hotfoot.c')
| -rw-r--r-- | arch/powerpc/boot/cuboot-hotfoot.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/arch/powerpc/boot/cuboot-hotfoot.c b/arch/powerpc/boot/cuboot-hotfoot.c new file mode 100644 index 000000000..0e5532f85 --- /dev/null +++ b/arch/powerpc/boot/cuboot-hotfoot.c @@ -0,0 +1,139 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Old U-boot compatibility for Esteem 195E Hotfoot CPU Board + * + * Author: Solomon Peachy <solomon@linux-wlan.com> + */ + +#include "ops.h" +#include "stdio.h" +#include "reg.h" +#include "dcr.h" +#include "4xx.h" +#include "cuboot.h" + +#define TARGET_4xx +#define TARGET_HOTFOOT + +#include "ppcboot-hotfoot.h" + +static bd_t bd; + +#define NUM_REGS 3 + +static void hotfoot_fixups(void) +{ + u32 uart = mfdcr(DCRN_CPC0_UCR) & 0x7f; + + dt_fixup_memory(bd.bi_memstart, bd.bi_memsize); + + dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_procfreq, 0); + dt_fixup_clock("/plb", bd.bi_plb_busfreq); + dt_fixup_clock("/plb/opb", bd.bi_opbfreq); + dt_fixup_clock("/plb/ebc", bd.bi_pci_busfreq); + dt_fixup_clock("/plb/opb/serial@ef600300", bd.bi_procfreq / uart); + dt_fixup_clock("/plb/opb/serial@ef600400", bd.bi_procfreq / uart); + + dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr); + dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr); + + /* Is this a single eth/serial board? */ + if ((bd.bi_enet1addr[0] == 0) && + (bd.bi_enet1addr[1] == 0) && + (bd.bi_enet1addr[2] == 0) && + (bd.bi_enet1addr[3] == 0) && + (bd.bi_enet1addr[4] == 0) && + (bd.bi_enet1addr[5] == 0)) { + void *devp; + + printf("Trimming devtree for single serial/eth board\n"); + + devp = finddevice("/plb/opb/serial@ef600300"); + if (!devp) + fatal("Can't find node for /plb/opb/serial@ef600300"); + del_node(devp); + + devp = finddevice("/plb/opb/ethernet@ef600900"); + if (!devp) + fatal("Can't find node for /plb/opb/ethernet@ef600900"); + del_node(devp); + } + + ibm4xx_quiesce_eth((u32 *)0xef600800, (u32 *)0xef600900); + + /* Fix up flash size in fdt for 4M boards. */ + if (bd.bi_flashsize < 0x800000) { + u32 regs[NUM_REGS]; + void *devp = finddevice("/plb/ebc/nor_flash@0"); + if (!devp) + fatal("Can't find FDT node for nor_flash!??"); + + printf("Fixing devtree for 4M Flash\n"); + + /* First fix up the base address */ + getprop(devp, "reg", regs, sizeof(regs)); + regs[0] = 0; + regs[1] = 0xffc00000; + regs[2] = 0x00400000; + setprop(devp, "reg", regs, sizeof(regs)); + + /* Then the offsets */ + devp = finddevice("/plb/ebc/nor_flash@0/partition@0"); + if (!devp) + fatal("Can't find FDT node for partition@0"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + devp = finddevice("/plb/ebc/nor_flash@0/partition@1"); + if (!devp) + fatal("Can't find FDT node for partition@1"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + devp = finddevice("/plb/ebc/nor_flash@0/partition@2"); + if (!devp) + fatal("Can't find FDT node for partition@2"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + devp = finddevice("/plb/ebc/nor_flash@0/partition@3"); + if (!devp) + fatal("Can't find FDT node for partition@3"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + devp = finddevice("/plb/ebc/nor_flash@0/partition@4"); + if (!devp) + fatal("Can't find FDT node for partition@4"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + devp = finddevice("/plb/ebc/nor_flash@0/partition@6"); + if (!devp) + fatal("Can't find FDT node for partition@6"); + getprop(devp, "reg", regs, 2*sizeof(u32)); + regs[0] -= 0x400000; + setprop(devp, "reg", regs, 2*sizeof(u32)); + + /* Delete the FeatFS node */ + devp = finddevice("/plb/ebc/nor_flash@0/partition@5"); + if (!devp) + fatal("Can't find FDT node for partition@5"); + del_node(devp); + } +} + +void platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + CUBOOT_INIT(); + platform_ops.fixups = hotfoot_fixups; + platform_ops.exit = ibm40x_dbcr_reset; + fdt_init(_dtb_start); + serial_console_init(); +} |