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Diffstat (limited to 'arch/ppc/syslib/ibm440gx_common.c')
-rw-r--r--arch/ppc/syslib/ibm440gx_common.c294
1 files changed, 0 insertions, 294 deletions
diff --git a/arch/ppc/syslib/ibm440gx_common.c b/arch/ppc/syslib/ibm440gx_common.c
deleted file mode 100644
index 6ad52f4a26e..00000000000
--- a/arch/ppc/syslib/ibm440gx_common.c
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
- * PPC440GX system library
- *
- * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
- * Copyright (c) 2003 - 2006 Zultys Technologies
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- */
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <asm/ibm44x.h>
-#include <asm/mmu.h>
-#include <asm/processor.h>
-#include <syslib/ibm440gx_common.h>
-
-/*
- * Calculate 440GX clocks
- */
-static inline u32 __fix_zero(u32 v, u32 def){
- return v ? v : def;
-}
-
-void __init ibm440gx_get_clocks(struct ibm44x_clocks* p, unsigned int sys_clk,
- unsigned int ser_clk)
-{
- u32 pllc = CPR_READ(DCRN_CPR_PLLC);
- u32 plld = CPR_READ(DCRN_CPR_PLLD);
- u32 uart0 = SDR_READ(DCRN_SDR_UART0);
- u32 uart1 = SDR_READ(DCRN_SDR_UART1);
-#ifdef CONFIG_440EP
- u32 uart2 = SDR_READ(DCRN_SDR_UART2);
- u32 uart3 = SDR_READ(DCRN_SDR_UART3);
-#endif
-
- /* Dividers */
- u32 fbdv = __fix_zero((plld >> 24) & 0x1f, 32);
- u32 fwdva = __fix_zero((plld >> 16) & 0xf, 16);
- u32 fwdvb = __fix_zero((plld >> 8) & 7, 8);
- u32 lfbdv = __fix_zero(plld & 0x3f, 64);
- u32 pradv0 = __fix_zero((CPR_READ(DCRN_CPR_PRIMAD) >> 24) & 7, 8);
- u32 prbdv0 = __fix_zero((CPR_READ(DCRN_CPR_PRIMBD) >> 24) & 7, 8);
- u32 opbdv0 = __fix_zero((CPR_READ(DCRN_CPR_OPBD) >> 24) & 3, 4);
- u32 perdv0 = __fix_zero((CPR_READ(DCRN_CPR_PERD) >> 24) & 3, 4);
-
- /* Input clocks for primary dividers */
- u32 clk_a, clk_b;
-
- if (pllc & 0x40000000){
- u32 m;
-
- /* Feedback path */
- switch ((pllc >> 24) & 7){
- case 0:
- /* PLLOUTx */
- m = ((pllc & 0x20000000) ? fwdvb : fwdva) * lfbdv;
- break;
- case 1:
- /* CPU */
- m = fwdva * pradv0;
- break;
- case 5:
- /* PERClk */
- m = fwdvb * prbdv0 * opbdv0 * perdv0;
- break;
- default:
- printk(KERN_EMERG "invalid PLL feedback source\n");
- goto bypass;
- }
- m *= fbdv;
- p->vco = sys_clk * m;
- clk_a = p->vco / fwdva;
- clk_b = p->vco / fwdvb;
- }
- else {
-bypass:
- /* Bypass system PLL */
- p->vco = 0;
- clk_a = clk_b = sys_clk;
- }
-
- p->cpu = clk_a / pradv0;
- p->plb = clk_b / prbdv0;
- p->opb = p->plb / opbdv0;
- p->ebc = p->opb / perdv0;
-
- /* UARTs clock */
- if (uart0 & 0x00800000)
- p->uart0 = ser_clk;
- else
- p->uart0 = p->plb / __fix_zero(uart0 & 0xff, 256);
-
- if (uart1 & 0x00800000)
- p->uart1 = ser_clk;
- else
- p->uart1 = p->plb / __fix_zero(uart1 & 0xff, 256);
-#ifdef CONFIG_440EP
- if (uart2 & 0x00800000)
- p->uart2 = ser_clk;
- else
- p->uart2 = p->plb / __fix_zero(uart2 & 0xff, 256);
-
- if (uart3 & 0x00800000)
- p->uart3 = ser_clk;
- else
- p->uart3 = p->plb / __fix_zero(uart3 & 0xff, 256);
-#endif
-}
-
-/* Issue L2C diagnostic command */
-static inline u32 l2c_diag(u32 addr)
-{
- mtdcr(DCRN_L2C0_ADDR, addr);
- mtdcr(DCRN_L2C0_CMD, L2C_CMD_DIAG);
- while (!(mfdcr(DCRN_L2C0_SR) & L2C_SR_CC)) ;
- return mfdcr(DCRN_L2C0_DATA);
-}
-
-static irqreturn_t l2c_error_handler(int irq, void* dev)
-{
- u32 sr = mfdcr(DCRN_L2C0_SR);
- if (sr & L2C_SR_CPE){
- /* Read cache trapped address */
- u32 addr = l2c_diag(0x42000000);
- printk(KERN_EMERG "L2C: Cache Parity Error, addr[16:26] = 0x%08x\n", addr);
- }
- if (sr & L2C_SR_TPE){
- /* Read tag trapped address */
- u32 addr = l2c_diag(0x82000000) >> 16;
- printk(KERN_EMERG "L2C: Tag Parity Error, addr[16:26] = 0x%08x\n", addr);
- }
-
- /* Clear parity errors */
- if (sr & (L2C_SR_CPE | L2C_SR_TPE)){
- mtdcr(DCRN_L2C0_ADDR, 0);
- mtdcr(DCRN_L2C0_CMD, L2C_CMD_CCP | L2C_CMD_CTE);
- } else
- printk(KERN_EMERG "L2C: LRU error\n");
-
- return IRQ_HANDLED;
-}
-
-/* Enable L2 cache */
-void __init ibm440gx_l2c_enable(void){
- u32 r;
- unsigned long flags;
-
- /* Install error handler */
- if (request_irq(87, l2c_error_handler, IRQF_DISABLED, "L2C", 0) < 0){
- printk(KERN_ERR "Cannot install L2C error handler, cache is not enabled\n");
- return;
- }
-
- local_irq_save(flags);
- asm volatile ("sync" ::: "memory");
-
- /* Disable SRAM */
- mtdcr(DCRN_SRAM0_DPC, mfdcr(DCRN_SRAM0_DPC) & ~SRAM_DPC_ENABLE);
- mtdcr(DCRN_SRAM0_SB0CR, mfdcr(DCRN_SRAM0_SB0CR) & ~SRAM_SBCR_BU_MASK);
- mtdcr(DCRN_SRAM0_SB1CR, mfdcr(DCRN_SRAM0_SB1CR) & ~SRAM_SBCR_BU_MASK);
- mtdcr(DCRN_SRAM0_SB2CR, mfdcr(DCRN_SRAM0_SB2CR) & ~SRAM_SBCR_BU_MASK);
- mtdcr(DCRN_SRAM0_SB3CR, mfdcr(DCRN_SRAM0_SB3CR) & ~SRAM_SBCR_BU_MASK);
-
- /* Enable L2_MODE without ICU/DCU */
- r = mfdcr(DCRN_L2C0_CFG) & ~(L2C_CFG_ICU | L2C_CFG_DCU | L2C_CFG_SS_MASK);
- r |= L2C_CFG_L2M | L2C_CFG_SS_256;
- mtdcr(DCRN_L2C0_CFG, r);
-
- mtdcr(DCRN_L2C0_ADDR, 0);
-
- /* Hardware Clear Command */
- mtdcr(DCRN_L2C0_CMD, L2C_CMD_HCC);
- while (!(mfdcr(DCRN_L2C0_SR) & L2C_SR_CC)) ;
-
- /* Clear Cache Parity and Tag Errors */
- mtdcr(DCRN_L2C0_CMD, L2C_CMD_CCP | L2C_CMD_CTE);
-
- /* Enable 64G snoop region starting at 0 */
- r = mfdcr(DCRN_L2C0_SNP0) & ~(L2C_SNP_BA_MASK | L2C_SNP_SSR_MASK);
- r |= L2C_SNP_SSR_32G | L2C_SNP_ESR;
- mtdcr(DCRN_L2C0_SNP0, r);
-
- r = mfdcr(DCRN_L2C0_SNP1) & ~(L2C_SNP_BA_MASK | L2C_SNP_SSR_MASK);
- r |= 0x80000000 | L2C_SNP_SSR_32G | L2C_SNP_ESR;
- mtdcr(DCRN_L2C0_SNP1, r);
-
- asm volatile ("sync" ::: "memory");
-
- /* Enable ICU/DCU ports */
- r = mfdcr(DCRN_L2C0_CFG);
- r &= ~(L2C_CFG_DCW_MASK | L2C_CFG_PMUX_MASK | L2C_CFG_PMIM | L2C_CFG_TPEI
- | L2C_CFG_CPEI | L2C_CFG_NAM | L2C_CFG_NBRM);
- r |= L2C_CFG_ICU | L2C_CFG_DCU | L2C_CFG_TPC | L2C_CFG_CPC | L2C_CFG_FRAN
- | L2C_CFG_CPIM | L2C_CFG_TPIM | L2C_CFG_LIM | L2C_CFG_SMCM;
- mtdcr(DCRN_L2C0_CFG, r);
-
- asm volatile ("sync; isync" ::: "memory");
- local_irq_restore(flags);
-}
-
-/* Disable L2 cache */
-void __init ibm440gx_l2c_disable(void){
- u32 r;
- unsigned long flags;
-
- local_irq_save(flags);
- asm volatile ("sync" ::: "memory");
-
- /* Disable L2C mode */
- r = mfdcr(DCRN_L2C0_CFG) & ~(L2C_CFG_L2M | L2C_CFG_ICU | L2C_CFG_DCU);
- mtdcr(DCRN_L2C0_CFG, r);
-
- /* Enable SRAM */
- mtdcr(DCRN_SRAM0_DPC, mfdcr(DCRN_SRAM0_DPC) | SRAM_DPC_ENABLE);
- mtdcr(DCRN_SRAM0_SB0CR,
- SRAM_SBCR_BAS0 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
- mtdcr(DCRN_SRAM0_SB1CR,
- SRAM_SBCR_BAS1 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
- mtdcr(DCRN_SRAM0_SB2CR,
- SRAM_SBCR_BAS2 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
- mtdcr(DCRN_SRAM0_SB3CR,
- SRAM_SBCR_BAS3 | SRAM_SBCR_BS_64KB | SRAM_SBCR_BU_RW);
-
- asm volatile ("sync; isync" ::: "memory");
- local_irq_restore(flags);
-}
-
-void __init ibm440gx_l2c_setup(struct ibm44x_clocks* p)
-{
- /* Disable L2C on rev.A, rev.B and 800MHz version of rev.C,
- enable it on all other revisions
- */
- if (strcmp(cur_cpu_spec->cpu_name, "440GX Rev. A") == 0 ||
- strcmp(cur_cpu_spec->cpu_name, "440GX Rev. B") == 0
- || (strcmp(cur_cpu_spec->cpu_name, "440GX Rev. C")
- == 0 && p->cpu > 667000000))
- ibm440gx_l2c_disable();
- else
- ibm440gx_l2c_enable();
-}
-
-int __init ibm440gx_get_eth_grp(void)
-{
- return (SDR_READ(DCRN_SDR_PFC1) & DCRN_SDR_PFC1_EPS) >> DCRN_SDR_PFC1_EPS_SHIFT;
-}
-
-void __init ibm440gx_set_eth_grp(int group)
-{
- SDR_WRITE(DCRN_SDR_PFC1, (SDR_READ(DCRN_SDR_PFC1) & ~DCRN_SDR_PFC1_EPS) | (group << DCRN_SDR_PFC1_EPS_SHIFT));
-}
-
-void __init ibm440gx_tah_enable(void)
-{
- /* Enable TAH0 and TAH1 */
- SDR_WRITE(DCRN_SDR_MFR,SDR_READ(DCRN_SDR_MFR) &
- ~DCRN_SDR_MFR_TAH0);
- SDR_WRITE(DCRN_SDR_MFR,SDR_READ(DCRN_SDR_MFR) &
- ~DCRN_SDR_MFR_TAH1);
-}
-
-int ibm440gx_show_cpuinfo(struct seq_file *m){
-
- u32 l2c_cfg = mfdcr(DCRN_L2C0_CFG);
- const char* s;
- if (l2c_cfg & L2C_CFG_L2M){
- switch (l2c_cfg & (L2C_CFG_ICU | L2C_CFG_DCU)){
- case L2C_CFG_ICU: s = "I-Cache only"; break;
- case L2C_CFG_DCU: s = "D-Cache only"; break;
- default: s = "I-Cache/D-Cache"; break;
- }
- }
- else
- s = "disabled";
-
- seq_printf(m, "L2-Cache\t: %s (0x%08x 0x%08x)\n", s,
- l2c_cfg, mfdcr(DCRN_L2C0_SR));
-
- return 0;
-}
-
-void __init ibm440gx_platform_init(unsigned long r3, unsigned long r4,
- unsigned long r5, unsigned long r6,
- unsigned long r7)
-{
- /* Erratum 440_43 workaround, disable L1 cache parity checking */
- if (!strcmp(cur_cpu_spec->cpu_name, "440GX Rev. C") ||
- !strcmp(cur_cpu_spec->cpu_name, "440GX Rev. F"))
- mtspr(SPRN_CCR1, mfspr(SPRN_CCR1) | CCR1_DPC);
-
- ibm44x_platform_init(r3, r4, r5, r6, r7);
-}
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