--- /dev/null
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/*
+ * Pantelis Antoniou, Intracom S.A., panto@intracom.gr
+ * U-Boot port on NetVia board
+ */
+
+#include <common.h>
+#include "mpc8xx.h"
+
+/****************************************************************/
+
+#if defined(CONFIG_NETVIA_VERSION) && CONFIG_NETVIA_VERSION >= 2
+/* last value written to the external register; we cannot read back */
+unsigned int last_er_val;
+#endif
+
+/****************************************************************/
+
+/****************************************************************/
+
+/* some sane bit macros */
+#define _BD(_b) (1U << (31-(_b)))
+#define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))
+
+#define _BW(_b) (1U << (15-(_b)))
+#define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))
+
+#define _BB(_b) (1U << (7-(_b)))
+#define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))
+
+#define _B(_b) _BD(_b)
+#define _BR(_l, _h) _BDR(_l, _h)
+
+/****************************************************************/
+
+#define _NOT_USED_ 0xFFFFFFFF
+
+/****************************************************************/
+
+#define CS_0000 0x00000000
+#define CS_0001 0x10000000
+#define CS_0010 0x20000000
+#define CS_0011 0x30000000
+#define CS_0100 0x40000000
+#define CS_0101 0x50000000
+#define CS_0110 0x60000000
+#define CS_0111 0x70000000
+#define CS_1000 0x80000000
+#define CS_1001 0x90000000
+#define CS_1010 0xA0000000
+#define CS_1011 0xB0000000
+#define CS_1100 0xC0000000
+#define CS_1101 0xD0000000
+#define CS_1110 0xE0000000
+#define CS_1111 0xF0000000
+
+#define BS_0000 0x00000000
+#define BS_0001 0x01000000
+#define BS_0010 0x02000000
+#define BS_0011 0x03000000
+#define BS_0100 0x04000000
+#define BS_0101 0x05000000
+#define BS_0110 0x06000000
+#define BS_0111 0x07000000
+#define BS_1000 0x08000000
+#define BS_1001 0x09000000
+#define BS_1010 0x0A000000
+#define BS_1011 0x0B000000
+#define BS_1100 0x0C000000
+#define BS_1101 0x0D000000
+#define BS_1110 0x0E000000
+#define BS_1111 0x0F000000
+
+#define A10_AAAA 0x00000000
+#define A10_AAA0 0x00200000
+#define A10_AAA1 0x00300000
+#define A10_000A 0x00800000
+#define A10_0000 0x00A00000
+#define A10_0001 0x00B00000
+#define A10_111A 0x00C00000
+#define A10_1110 0x00E00000
+#define A10_1111 0x00F00000
+
+#define RAS_0000 0x00000000
+#define RAS_0001 0x00040000
+#define RAS_1110 0x00080000
+#define RAS_1111 0x000C0000
+
+#define CAS_0000 0x00000000
+#define CAS_0001 0x00010000
+#define CAS_1110 0x00020000
+#define CAS_1111 0x00030000
+
+#define WE_0000 0x00000000
+#define WE_0001 0x00004000
+#define WE_1110 0x00008000
+#define WE_1111 0x0000C000
+
+#define GPL4_0000 0x00000000
+#define GPL4_0001 0x00001000
+#define GPL4_1110 0x00002000
+#define GPL4_1111 0x00003000
+
+#define GPL5_0000 0x00000000
+#define GPL5_0001 0x00000400
+#define GPL5_1110 0x00000800
+#define GPL5_1111 0x00000C00
+#define LOOP 0x00000080
+
+#define EXEN 0x00000040
+
+#define AMX_COL 0x00000000
+#define AMX_ROW 0x00000020
+#define AMX_MAR 0x00000030
+
+#define NA 0x00000008
+
+#define UTA 0x00000004
+
+#define TODT 0x00000002
+
+#define LAST 0x00000001
+
+const uint sdram_table[0x40] = {
+ /* RSS */
+ CS_0001 | BS_1111 | A10_AAAA | RAS_0001 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* ACT */
+ CS_1111 | BS_1111 | A10_0000 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* NOP */
+ CS_0000 | BS_1111 | A10_0001 | RAS_1111 | CAS_0001 | WE_1111 | AMX_COL | UTA, /* READ */
+ CS_0001 | BS_0001 | A10_1111 | RAS_0001 | CAS_1111 | WE_0001 | AMX_COL | UTA, /* PALL */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA | TODT | LAST, /* NOP */
+ _NOT_USED_, _NOT_USED_,
+
+ /* RBS */
+ CS_0001 | BS_1111 | A10_AAAA | RAS_0001 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* ACT */
+ CS_1111 | BS_1111 | A10_0000 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* NOP */
+ CS_0001 | BS_1111 | A10_0001 | RAS_1111 | CAS_0001 | WE_1111 | AMX_COL | UTA, /* READ */
+ CS_1111 | BS_0000 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* NOP */
+ CS_1111 | BS_0000 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_1111 | BS_0000 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_0001 | BS_0001 | A10_1111 | RAS_0001 | CAS_1111 | WE_0001 | AMX_COL, /* PALL */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | TODT | LAST, /* NOP */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /* WSS */
+ CS_0001 | BS_1111 | A10_AAAA | RAS_0001 | CAS_1111 | WE_1111 | AMX_COL | UTA,
+ CS_1111 | BS_1111 | A10_0000 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL,
+ CS_0000 | BS_0001 | A10_0000 | RAS_1111 | CAS_0001 | WE_0000 | AMX_COL | UTA,
+ CS_0001 | BS_1111 | A10_1111 | RAS_0001 | CAS_1111 | WE_0001 | AMX_COL | UTA | TODT | LAST,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /* WBS */
+ CS_0001 | BS_1111 | A10_AAAA | RAS_0001 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* ACT */
+ CS_1111 | BS_1111 | A10_0000 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_0001 | BS_0000 | A10_0000 | RAS_1111 | CAS_0001 | WE_0000 | AMX_COL, /* WRITE */
+ CS_1111 | BS_0000 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_1111 | BS_0000 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_1111 | BS_0001 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* NOP */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA, /* NOP */
+ CS_0001 | BS_1111 | A10_1111 | RAS_0001 | CAS_1111 | WE_0001 | AMX_COL | UTA, /* PALL */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | UTA | TODT | LAST, /* NOP */
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+ /* UPT */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL, /* NOP */
+ CS_0001 | BS_1111 | A10_1111 | RAS_0001 | CAS_0001 | WE_1111 | AMX_COL | LOOP,
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL,
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL,
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | LOOP,
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | LAST,
+ _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+ _NOT_USED_, _NOT_USED_,
+
+ /* EXC */
+ CS_0001 | BS_1111 | A10_1111 | RAS_0001 | CAS_1111 | WE_0001 | AMX_COL,
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1111 | AMX_COL | TODT | LAST,
+
+ /* REG */
+ CS_1111 | BS_1111 | A10_1111 | RAS_1111 | CAS_1111 | WE_1110 | AMX_MAR,
+ CS_0001 | BS_1111 | A10_0001 | RAS_0001 | CAS_0001 | WE_0001 | AMX_MAR | TODT | LAST,
+};
+
+/* ------------------------------------------------------------------------- */
+
+
+/*
+ * Check Board Identity:
+ *
+ * Test ETX ID string (ETX_xxx...)
+ *
+ * Return 1 always.
+ */
+
+int checkboard(void)
+{
+#if !defined(CONFIG_NETVIA_VERSION) || CONFIG_NETVIA_VERSION == 1
+ printf ("NETVIA v1\n");
+#else
+ printf ("NETVIA v2+\n");
+#endif
+ return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/* 0xC8 = 0b11001000 , CAS3, >> 2 = 0b00 11 0 010 */
+#define MAR_SDRAM_INIT 0x000000C8LU
+
+#define MCR_OP(x) ((unsigned long)((x) & 3) << (31-1))
+#define MCR_OP_MASK MCR_OP(3)
+
+#define MCR_UM(x) ((unsigned long)((x) & 1) << (31 - 8))
+#define MCR_UM_MASK MCR_UM(1)
+#define MCR_UM_UPMA MCR_UM(0)
+#define MCR_UM_UPMB MCR_UM(1)
+
+#define MCR_MB(x) ((unsigned long)((x) & 7) << (31 - 18))
+#define MCR_MB_MASK MCR_MB(7)
+#define MCR_MB_CS(x) MCR_MB(x)
+
+#define MCR_MCLF(x) ((unsigned long)((x) & 15) << (31 - 23))
+#define MCR_MCLF_MASK MCR_MCLF(15)
+
+phys_size_t initdram(int board_type)
+{
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+ long int size;
+
+ upmconfig(UPMA, (uint *) sdram_table, sizeof(sdram_table) / sizeof(uint));
+
+ /*
+ * Preliminary prescaler for refresh
+ */
+ memctl->memc_mptpr = CONFIG_SYS_MPTPR_1BK_8K;
+
+ memctl->memc_mar = MAR_SDRAM_INIT; /* 32-bit address to be output on the address bus if AMX = 0b11 */
+
+ /*
+ * Map controller bank 3 to the SDRAM bank at preliminary address.
+ */
+ memctl->memc_or3 = CONFIG_SYS_OR3_PRELIM;
+ memctl->memc_br3 = CONFIG_SYS_BR3_PRELIM;
+
+ memctl->memc_mamr = CONFIG_SYS_MAMR_9COL & ~MAMR_PTAE; /* no refresh yet */
+
+ udelay(200);
+
+ /* perform SDRAM initialisation sequence */
+ memctl->memc_mcr = MCR_OP_RUN | MCR_UM_UPMA | MCR_MB_CS3 | MCR_MCLF(1) | MCR_MAD(0x3C); /* precharge all */
+ udelay(1);
+ memctl->memc_mcr = MCR_OP_RUN | MCR_UM_UPMA | MCR_MB_CS3 | MCR_MCLF(0) | MCR_MAD(0x30); /* refresh 16 times(0) */
+ udelay(1);
+ memctl->memc_mcr = MCR_OP_RUN | MCR_UM_UPMA | MCR_MB_CS3 | MCR_MCLF(1) | MCR_MAD(0x3E); /* exception program (write mar) */
+ udelay(1);
+
+ memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
+
+ udelay(1000);
+
+ memctl->memc_mamr = CONFIG_SYS_MAMR_9COL;
+
+ size = SDRAM_MAX_SIZE;
+
+ udelay(10000);
+
+ return (size);
+}
+
+/* ------------------------------------------------------------------------- */
+
+int misc_init_r(void)
+{
+#if defined(CONFIG_NETVIA_VERSION) && CONFIG_NETVIA_VERSION >= 2
+ last_er_val = 0xffffffff;
+#endif
+ return(0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/* GP = general purpose, SP = special purpose (on chip peripheral) */
+
+/* bits that can have a special purpose or can be configured as inputs/outputs */
+#define PA_GP_INMASK 0
+#define PA_GP_OUTMASK (_BW(5) | _BWR(14, 15))
+#define PA_SP_MASK (_BW(4) | _BWR(6, 13))
+#define PA_ODR_VAL 0
+#define PA_GP_OUTVAL _BW(5)
+#define PA_SP_DIRVAL 0
+
+#define PB_GP_INMASK _B(28)
+#define PB_GP_OUTMASK (_BR(16, 19) | _BR(26, 27) | _BR(29, 31))
+#define PB_SP_MASK _BR(22, 25)
+#define PB_ODR_VAL 0
+#define PB_GP_OUTVAL (_BR(16, 19) | _BR(26, 27) | _BR(29, 31))
+#define PB_SP_DIRVAL 0
+
+#if !defined(CONFIG_NETVIA_VERSION) || CONFIG_NETVIA_VERSION == 1
+
+#define PC_GP_INMASK (_BWR(5, 7) | _BWR(9, 10) | _BW(13))
+#define PC_GP_OUTMASK _BW(12)
+#define PC_SP_MASK (_BW(4) | _BW(8))
+#define PC_SOVAL 0
+#define PC_INTVAL 0
+#define PC_GP_OUTVAL 0
+#define PC_SP_DIRVAL 0
+
+#define PD_GP_INMASK 0
+#define PD_GP_OUTMASK _BWR(3, 15)
+#define PD_SP_MASK 0
+#define PD_GP_OUTVAL (_BW(3) | _BW(5) | _BW(7) | _BWR(8, 15))
+#define PD_SP_DIRVAL 0
+
+#elif CONFIG_NETVIA_VERSION >= 2
+
+#define PC_GP_INMASK (_BW(5) | _BW(7) | _BWR(9, 11) | _BWR(13, 15))
+#define PC_GP_OUTMASK (_BW(6) | _BW(12))
+#define PC_SP_MASK (_BW(4) | _BW(8))
+#define PC_SOVAL 0
+#define PC_INTVAL _BW(7)
+#define PC_GP_OUTVAL (_BW(6) | _BW(12))
+#define PC_SP_DIRVAL 0
+
+#define PD_GP_INMASK 0
+#define PD_GP_OUTMASK _BWR(3, 15)
+#define PD_SP_MASK 0
+#define PD_GP_OUTVAL (_BW(3) | _BW(5) | _BW(9) | _BW(11))
+#define PD_SP_DIRVAL 0
+
+#else
+#error Unknown NETVIA board version.
+#endif
+
+int board_early_init_f(void)
+{
+ volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+ volatile iop8xx_t *ioport = &immap->im_ioport;
+ volatile cpm8xx_t *cpm = &immap->im_cpm;
+ volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+ /* DSP0 chip select */
+ memctl->memc_or4 = ((0xFFFFFFFFLU & ~(DSP_SIZE - 1)) | OR_CSNT_SAM | OR_BI | OR_ACS_DIV2 | OR_SETA | OR_TRLX);
+ memctl->memc_br4 = ((DSP0_BASE & BR_BA_MSK) | BR_PS_16 | BR_V);
+
+ /* DSP1 chip select */
+ memctl->memc_or5 = ((0xFFFFFFFFLU & ~(DSP_SIZE - 1)) | OR_CSNT_SAM | OR_BI | OR_ACS_DIV2 | OR_SETA | OR_TRLX);
+ memctl->memc_br5 = ((DSP1_BASE & BR_BA_MSK) | BR_PS_16 | BR_V);
+
+ /* FPGA chip select */
+ memctl->memc_or6 = ((0xFFFFFFFFLU & ~(FPGA_SIZE - 1)) | OR_BI | OR_SCY_1_CLK);
+ memctl->memc_br6 = ((FPGA_BASE & BR_BA_MSK) | BR_PS_8 | BR_V);
+
+#if defined(CONFIG_NETVIA_VERSION) && CONFIG_NETVIA_VERSION >= 2
+ /* NAND chip select */
+ memctl->memc_or1 = ((0xFFFFFFFFLU & ~(NAND_SIZE - 1)) | OR_CSNT_SAM | OR_BI | OR_SCY_8_CLK | OR_EHTR | OR_TRLX);
+ memctl->memc_br1 = ((NAND_BASE & BR_BA_MSK) | BR_PS_8 | BR_V);
+
+ /* kill this chip select */
+ memctl->memc_br2 &= ~BR_V; /* invalid */
+
+ /* external reg chip select */
+ memctl->memc_or7 = ((0xFFFFFFFFLU & ~(ER_SIZE - 1)) | OR_BI | OR_SCY_4_CLK);
+ memctl->memc_br7 = ((ER_BASE & BR_BA_MSK) | BR_PS_32 | BR_V);
+#endif
+
+ ioport->iop_padat = PA_GP_OUTVAL;
+ ioport->iop_paodr = PA_ODR_VAL;
+ ioport->iop_padir = PA_GP_OUTMASK | PA_SP_DIRVAL;
+ ioport->iop_papar = PA_SP_MASK;
+
+ cpm->cp_pbdat = PB_GP_OUTVAL;
+ cpm->cp_pbodr = PB_ODR_VAL;
+ cpm->cp_pbdir = PB_GP_OUTMASK | PB_SP_DIRVAL;
+ cpm->cp_pbpar = PB_SP_MASK;
+
+ ioport->iop_pcdat = PC_GP_OUTVAL;
+ ioport->iop_pcdir = PC_GP_OUTMASK | PC_SP_DIRVAL;
+ ioport->iop_pcso = PC_SOVAL;
+ ioport->iop_pcint = PC_INTVAL;
+ ioport->iop_pcpar = PC_SP_MASK;
+
+ ioport->iop_pddat = PD_GP_OUTVAL;
+ ioport->iop_pddir = PD_GP_OUTMASK | PD_SP_DIRVAL;
+ ioport->iop_pdpar = PD_SP_MASK;
+
+#if defined(CONFIG_NETVIA_VERSION) && CONFIG_NETVIA_VERSION >= 2
+ /* external register init */
+ *(volatile uint *)ER_BASE = 0xFFFFFFFF;
+#endif
+
+ return 0;
+}
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