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u-boot/board/kmc/kzm9g/kzm9g.c
Harald Seiler 35b65dd8ef reset: Remove addr parameter from reset_cpu() 
Historically, the reset_cpu() function had an `addr` parameter which was
meant to pass in an address of the reset vector location, where the CPU
should reset to.  This feature is no longer used anywhere in U-Boot as
all reset_cpu() implementations now ignore the passed value.  Generic
code has been added which always calls reset_cpu() with `0` which means
this feature can no longer be used easily anyway.

Over time, many implementations seem to have "misunderstood" the
existence of this parameter as a way to customize/parameterize the reset
(e.g.  COLD vs WARM resets).  As this is not properly supported, the
code will almost always not do what it is intended to (because all
call-sites just call reset_cpu() with 0).

To avoid confusion and to clean up the codebase from unused left-overs
of the past, remove the `addr` parameter entirely.  Code which intends
to support different kinds of resets should be rewritten as a sysreset
driver instead.

This transformation was done with the following coccinelle patch:

    @@
    expression argvalue;
    @@
    - reset_cpu(argvalue)
    + reset_cpu()

    @@
    identifier argname;
    type argtype;
    @@
    - reset_cpu(argtype argname)
    + reset_cpu(void)
    { ... }

Signed-off-by: Harald Seiler <hws@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-03-02 14:03:02 -05:00

373 lines
10 KiB
C
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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2012 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
* (C) Copyright 2012 Renesas Solutions Corp.
*/
#include <common.h>
#include <cpu_func.h>
#include <init.h>
#include <net.h>
#include <asm/global_data.h>
#include <asm/io.h>
#include <asm/arch/sys_proto.h>
#include <asm/gpio.h>
#include <netdev.h>
#include <i2c.h>
DECLARE_GLOBAL_DATA_PTR;
#define CS0BCR_D (0x06C00400)
#define CS4BCR_D (0x16c90400)
#define CS0WCR_D (0x55062C42)
#define CS4WCR_D (0x1e071dc3)
#define CMNCR_BROMMD0 (1 << 21)
#define CMNCR_BROMMD1 (1 << 22)
#define CMNCR_BROMMD (CMNCR_BROMMD0|CMNCR_BROMMD1)
#define VCLKCR1_D (0x27)
#define SMSTPCR1_CMT0 (1 << 24)
#define SMSTPCR1_I2C0 (1 << 16)
#define SMSTPCR3_USB (1 << 22)
#define SMSTPCR3_I2C1 (1 << 23)
#define PORT32CR (0xE6051020)
#define PORT33CR (0xE6051021)
#define PORT34CR (0xE6051022)
#define PORT35CR (0xE6051023)
static int cmp_loop(u32 *addr, u32 data, u32 cmp)
{
int err = -1;
int timeout = 100;
u32 value;
while (timeout > 0) {
value = readl(addr);
if ((value & data) == cmp) {
err = 0;
break;
}
timeout--;
}
return err;
}
/* SBSC Init function */
static void sbsc_init(struct sh73a0_sbsc *sbsc)
{
writel(readl(&sbsc->dllcnt0)|0x2, &sbsc->dllcnt0);
writel(0x5, &sbsc->sdgencnt);
cmp_loop(&sbsc->sdgencnt, 0xffffffff, 0x0);
writel(0xacc90159, &sbsc->sdcr0);
writel(0x00010059, &sbsc->sdcr1);
writel(0x50874114, &sbsc->sdwcrc0);
writel(0x33199b37, &sbsc->sdwcrc1);
writel(0x008f2313, &sbsc->sdwcrc2);
writel(0x31020707, &sbsc->sdwcr00);
writel(0x0017040a, &sbsc->sdwcr01);
writel(0x31020707, &sbsc->sdwcr10);
writel(0x0017040a, &sbsc->sdwcr11);
writel(0x055557ff, &sbsc->sddrvcr0); /* Enlarge drivability of LPDQS0-3, LPCLK */
writel(0x30000000, &sbsc->sdwcr2);
writel(readl(&sbsc->sdpcr) | 0x80, &sbsc->sdpcr);
cmp_loop(&sbsc->sdpcr, 0x80, 0x80);
writel(0x00002710, &sbsc->sdgencnt);
cmp_loop(&sbsc->sdgencnt, 0xffffffff, 0x0);
writel(0x0000003f, &sbsc->sdmracr0);
writel(0x0, SDMRA1A);
writel(0x000001f4, &sbsc->sdgencnt);
cmp_loop(&sbsc->sdgencnt, 0xffffffff, 0x0);
writel(0x0000ff0a, &sbsc->sdmracr0);
if (sbsc == (struct sh73a0_sbsc *)SBSC1_BASE)
writel(0x0, SDMRA3A);
else
writel(0x0, SDMRA3B);
writel(0x00000032, &sbsc->sdgencnt);
cmp_loop(&sbsc->sdgencnt, 0xffffffff, 0x0);
if (sbsc == (struct sh73a0_sbsc *)SBSC1_BASE) {
writel(0x00002201, &sbsc->sdmracr0);
writel(0x0, SDMRA1A);
writel(0x00000402, &sbsc->sdmracr0);
writel(0x0, SDMRA1A);
writel(0x00000203, &sbsc->sdmracr0); /* MR3 register DS=2 */
writel(0x0, SDMRA1A);
writel(0x0, SDMRA2A);
} else {
writel(0x00002201, &sbsc->sdmracr0);
writel(0x0, SDMRA1B);
writel(0x00000402, &sbsc->sdmracr0);
writel(0x0, SDMRA1B);
writel(0x00000203, &sbsc->sdmracr0); /* MR3 register DS=2 */
writel(0x0, SDMRA1B);
writel(0x0, SDMRA2B);
}
writel(0x88800004, &sbsc->sdmrtmpcr);
writel(0x00000004, &sbsc->sdmrtmpmsk);
writel(0xa55a0032, &sbsc->rtcor);
writel(0xa55a000c, &sbsc->rtcorh);
writel(0xa55a2048, &sbsc->rtcsr);
writel(readl(&sbsc->sdcr0)|0x800, &sbsc->sdcr0);
writel(readl(&sbsc->sdcr1)|0x400, &sbsc->sdcr1);
writel(0xfff20000, &sbsc->zqccr);
/* SCBS2 only */
if (sbsc == (struct sh73a0_sbsc *)SBSC2_BASE) {
writel(readl(&sbsc->sdpdcr0)|0x00030000, &sbsc->sdpdcr0);
writel(0xa5390000, &sbsc->dphycnt1);
writel(0x00001200, &sbsc->dphycnt0);
writel(0x07ce0000, &sbsc->dphycnt1);
writel(0x00001247, &sbsc->dphycnt0);
cmp_loop(&sbsc->dphycnt2, 0xffffffff, 0x07ce0000);
writel(readl(&sbsc->sdpdcr0) & 0xfffcffff, &sbsc->sdpdcr0);
}
}
void s_init(void)
{
struct sh73a0_rwdt *rwdt = (struct sh73a0_rwdt *)RWDT_BASE;
struct sh73a0_sbsc_cpg *cpg = (struct sh73a0_sbsc_cpg *)CPG_BASE;
struct sh73a0_sbsc_cpg_srcr *cpg_srcr =
(struct sh73a0_sbsc_cpg_srcr *)CPG_SRCR_BASE;
struct sh73a0_sbsc *sbsc1 = (struct sh73a0_sbsc *)SBSC1_BASE;
struct sh73a0_sbsc *sbsc2 = (struct sh73a0_sbsc *)SBSC2_BASE;
struct sh73a0_hpb *hpb = (struct sh73a0_hpb *)HPB_BASE;
struct sh73a0_hpb_bscr *hpb_bscr =
(struct sh73a0_hpb_bscr *)HPBSCR_BASE;
/* Watchdog init */
writew(0xA507, &rwdt->rwtcsra0);
/* Secure control register Init */
#define LIFEC_SEC_SRC_BIT (1 << 15)
writel(readl(LIFEC_SEC_SRC) & ~LIFEC_SEC_SRC_BIT, LIFEC_SEC_SRC);
clrbits_le32(&cpg->smstpcr3, (1 << 15));
clrbits_le32(&cpg_srcr->srcr3, (1 << 15));
clrbits_le32(&cpg->smstpcr2, (1 << 18));
clrbits_le32(&cpg_srcr->srcr2, (1 << 18));
writel(0x0, &cpg->pllecr);
cmp_loop(&cpg->pllecr, 0x00000F00, 0x0);
cmp_loop(&cpg->frqcrb, 0x80000000, 0x0);
writel(0x2D000000, &cpg->pll0cr);
writel(0x17100000, &cpg->pll1cr);
writel(0x96235880, &cpg->frqcrb);
cmp_loop(&cpg->frqcrb, 0x80000000, 0x0);
writel(0xB, &cpg->flckcr);
clrbits_le32(&cpg->smstpcr0, (1 << 1));
clrbits_le32(&cpg_srcr->srcr0, (1 << 1));
writel(0x0514, &hpb_bscr->smgpiotime);
writel(0x0514, &hpb_bscr->smcmt2time);
writel(0x0514, &hpb_bscr->smcpgtime);
writel(0x0514, &hpb_bscr->smsysctime);
writel(0x00092000, &cpg->dvfscr4);
writel(0x000000DC, &cpg->dvfscr5);
writel(0x0, &cpg->pllecr);
cmp_loop(&cpg->pllecr, 0x00000F00, 0x0);
/* FRQCR Init */
writel(0x0012453C, &cpg->frqcra);
writel(0x80431350, &cpg->frqcrb); /* ETM TRCLK 78MHz */
cmp_loop(&cpg->frqcrb, 0x80000000, 0x0);
writel(0x00000B0B, &cpg->frqcrd);
cmp_loop(&cpg->frqcrd, 0x80000000, 0x0);
/* Clock Init */
writel(0x00000003, PCLKCR);
writel(0x0000012F, &cpg->vclkcr1);
writel(0x00000119, &cpg->vclkcr2);
writel(0x00000119, &cpg->vclkcr3);
writel(0x00000002, &cpg->zbckcr);
writel(0x00000005, &cpg->flckcr);
writel(0x00000080, &cpg->sd0ckcr);
writel(0x00000080, &cpg->sd1ckcr);
writel(0x00000080, &cpg->sd2ckcr);
writel(0x0000003F, &cpg->fsiackcr);
writel(0x0000003F, &cpg->fsibckcr);
writel(0x00000080, &cpg->subckcr);
writel(0x0000000B, &cpg->spuackcr);
writel(0x0000000B, &cpg->spuvckcr);
writel(0x0000013F, &cpg->msuckcr);
writel(0x00000080, &cpg->hsickcr);
writel(0x0000003F, &cpg->mfck1cr);
writel(0x0000003F, &cpg->mfck2cr);
writel(0x00000107, &cpg->dsitckcr);
writel(0x00000313, &cpg->dsi0pckcr);
writel(0x0000130D, &cpg->dsi1pckcr);
writel(0x2A800E0E, &cpg->dsi0phycr);
writel(0x1E000000, &cpg->pll0cr);
writel(0x2D000000, &cpg->pll0cr);
writel(0x17100000, &cpg->pll1cr);
writel(0x27000080, &cpg->pll2cr);
writel(0x1D000000, &cpg->pll3cr);
writel(0x00080000, &cpg->pll0stpcr);
writel(0x000120C0, &cpg->pll1stpcr);
writel(0x00012000, &cpg->pll2stpcr);
writel(0x00000030, &cpg->pll3stpcr);
writel(0x0000000B, &cpg->pllecr);
cmp_loop(&cpg->pllecr, 0x00000B00, 0x00000B00);
writel(0x000120F0, &cpg->dvfscr3);
writel(0x00000020, &cpg->mpmode);
writel(0x0000028A, &cpg->vrefcr);
writel(0xE4628087, &cpg->rmstpcr0);
writel(0xFFFFFFFF, &cpg->rmstpcr1);
writel(0x53FFFFFF, &cpg->rmstpcr2);
writel(0xFFFFFFFF, &cpg->rmstpcr3);
writel(0x00800D3D, &cpg->rmstpcr4);
writel(0xFFFFF3FF, &cpg->rmstpcr5);
writel(0x00000000, &cpg->smstpcr2);
writel(0x00040000, &cpg_srcr->srcr2);
clrbits_le32(&cpg->pllecr, (1 << 3));
cmp_loop(&cpg->pllecr, 0x00000800, 0x0);
writel(0x00000001, &hpb->hpbctrl6);
cmp_loop(&hpb->hpbctrl6, 0x1, 0x1);
writel(0x00001414, &cpg->frqcrd);
cmp_loop(&cpg->frqcrd, 0x80000000, 0x0);
writel(0x1d000000, &cpg->pll3cr);
setbits_le32(&cpg->pllecr, (1 << 3));
cmp_loop(&cpg->pllecr, 0x800, 0x800);
/* SBSC1 Init*/
sbsc_init(sbsc1);
/* SBSC2 Init*/
sbsc_init(sbsc2);
writel(0x00000b0b, &cpg->frqcrd);
cmp_loop(&cpg->frqcrd, 0x80000000, 0x0);
writel(0xfffffffc, &cpg->cpgxxcs4);
}
int board_early_init_f(void)
{
struct sh73a0_sbsc_cpg *cpg = (struct sh73a0_sbsc_cpg *)CPG_BASE;
struct sh73a0_bsc *bsc = (struct sh73a0_bsc *)BSC_BASE;
struct sh73a0_sbsc_cpg_srcr *cpg_srcr =
(struct sh73a0_sbsc_cpg_srcr *)CPG_SRCR_BASE;
writel(CS0BCR_D, &bsc->cs0bcr);
writel(CS4BCR_D, &bsc->cs4bcr);
writel(CS0WCR_D, &bsc->cs0wcr);
writel(CS4WCR_D, &bsc->cs4wcr);
clrsetbits_le32(&bsc->cmncr, ~CMNCR_BROMMD, CMNCR_BROMMD);
clrbits_le32(&cpg->smstpcr1, (SMSTPCR1_CMT0|SMSTPCR1_I2C0));
clrbits_le32(&cpg_srcr->srcr1, (SMSTPCR1_CMT0|SMSTPCR1_I2C0));
clrbits_le32(&cpg->smstpcr3, (SMSTPCR3_USB|SMSTPCR3_I2C1));
clrbits_le32(&cpg_srcr->srcr3, (SMSTPCR3_USB|SMSTPCR3_I2C1));
writel(VCLKCR1_D, &cpg->vclkcr1);
/* Setup SCIF4 / workaround */
writeb(0x12, PORT32CR);
writeb(0x22, PORT33CR);
writeb(0x12, PORT34CR);
writeb(0x22, PORT35CR);
return 0;
}
void adjust_core_voltage(void)
{
u8 data;
data = 0x35;
i2c_set_bus_num(0);
i2c_write(0x40, 3, 1, &data, 1);
}
int board_init(void)
{
adjust_core_voltage();
sh73a0_pinmux_init();
/* SCIFA 4 */
gpio_request(GPIO_FN_SCIFA4_TXD, NULL);
gpio_request(GPIO_FN_SCIFA4_RXD, NULL);
gpio_request(GPIO_FN_SCIFA4_RTS_, NULL);
gpio_request(GPIO_FN_SCIFA4_CTS_, NULL);
/* Ethernet/SMSC */
gpio_request(GPIO_PORT224, NULL);
gpio_direction_input(GPIO_PORT224);
/* SMSC/USB */
gpio_request(GPIO_FN_CS4_, NULL);
/* MMCIF */
gpio_request(GPIO_FN_MMCCLK0, NULL);
gpio_request(GPIO_FN_MMCCMD0_PU, NULL);
gpio_request(GPIO_FN_MMCD0_0_PU, NULL);
gpio_request(GPIO_FN_MMCD0_1_PU, NULL);
gpio_request(GPIO_FN_MMCD0_2_PU, NULL);
gpio_request(GPIO_FN_MMCD0_3_PU, NULL);
gpio_request(GPIO_FN_MMCD0_4_PU, NULL);
gpio_request(GPIO_FN_MMCD0_5_PU, NULL);
gpio_request(GPIO_FN_MMCD0_6_PU, NULL);
gpio_request(GPIO_FN_MMCD0_7_PU, NULL);
/* SDHI */
gpio_request(GPIO_FN_SDHIWP0, NULL);
gpio_request(GPIO_FN_SDHICD0, NULL);
gpio_request(GPIO_FN_SDHICMD0, NULL);
gpio_request(GPIO_FN_SDHICLK0, NULL);
gpio_request(GPIO_FN_SDHID0_3, NULL);
gpio_request(GPIO_FN_SDHID0_2, NULL);
gpio_request(GPIO_FN_SDHID0_1, NULL);
gpio_request(GPIO_FN_SDHID0_0, NULL);
gpio_request(GPIO_FN_SDHI0_VCCQ_MC0_ON, NULL);
gpio_request(GPIO_PORT15, NULL);
gpio_direction_output(GPIO_PORT15, 1);
/* I2C */
gpio_request(GPIO_FN_PORT237_I2C_SCL2, NULL);
gpio_request(GPIO_FN_PORT236_I2C_SDA2, NULL);
gpio_request(GPIO_FN_PORT27_I2C_SCL3, NULL);
gpio_request(GPIO_FN_PORT28_I2C_SDA3, NULL);
gd->bd->bi_boot_params = (CONFIG_SYS_SDRAM_BASE + 0x100);
return 0;
}
int dram_init(void)
{
gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
return 0;
}
int board_eth_init(struct bd_info *bis)
{
int ret = 0;
#ifdef CONFIG_SMC911X
ret = smc911x_initialize(0, CONFIG_SMC911X_BASE);
#endif
return ret;
}
void reset_cpu(void)
{
/* Soft Power On Reset */
writel((1 << 31), RESCNT2);
}
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