From patchwork Sat Sep 24 12:28:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: BALATON Zoltan X-Patchwork-Id: 12987662 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 940A5C32771 for ; Sat, 24 Sep 2022 12:58:49 +0000 (UTC) Received: from localhost ([::1]:43738 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oc4k4-0004Ps-KA for qemu-devel@archiver.kernel.org; Sat, 24 Sep 2022 08:58:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:57638) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oc4Gn-0000tx-6d; Sat, 24 Sep 2022 08:28:33 -0400 Received: from zero.eik.bme.hu ([152.66.115.2]:62717) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oc4Gk-0001FE-5K; Sat, 24 Sep 2022 08:28:32 -0400 Received: from zero.eik.bme.hu (blah.eik.bme.hu [152.66.115.182]) by localhost (Postfix) with SMTP id 6C69675A168; Sat, 24 Sep 2022 14:28:08 +0200 (CEST) Received: by zero.eik.bme.hu (Postfix, from userid 432) id 33E2175A15D; Sat, 24 Sep 2022 14:28:08 +0200 (CEST) Message-Id: <0cb8a08102d716b518cf47bb14f3dbf98a36007a.1664021647.git.balaton@eik.bme.hu> In-Reply-To: References: From: BALATON Zoltan Subject: [PATCH v6 18/25] ppc440_uc.c: Move DDR2 SDRAM controller model to ppc4xx_sdram.c MIME-Version: 1.0 To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Cc: clg@kaod.org, Daniel Henrique Barboza , Peter Maydell Date: Sat, 24 Sep 2022 14:28:08 +0200 (CEST) Received-SPF: pass client-ip=152.66.115.2; envelope-from=balaton@eik.bme.hu; helo=zero.eik.bme.hu X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" In order to move PPC4xx SDRAM controller models together move out the DDR2 controller model from ppc440_uc.c into a new ppc4xx_sdram.c file. Signed-off-by: BALATON Zoltan --- hw/ppc/meson.build | 3 +- hw/ppc/ppc440_uc.c | 328 ---------------------------------------- hw/ppc/ppc4xx_sdram.c | 344 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 346 insertions(+), 329 deletions(-) create mode 100644 hw/ppc/ppc4xx_sdram.c diff --git a/hw/ppc/meson.build b/hw/ppc/meson.build index 62801923f3..74720dd1e1 100644 --- a/hw/ppc/meson.build +++ b/hw/ppc/meson.build @@ -59,8 +59,9 @@ ppc_ss.add(when: 'CONFIG_PPC440', if_true: files( 'ppc440_bamboo.c', 'ppc440_pcix.c', 'ppc440_uc.c')) ppc_ss.add(when: 'CONFIG_PPC4XX', if_true: files( + 'ppc4xx_devs.c', 'ppc4xx_pci.c', - 'ppc4xx_devs.c')) + 'ppc4xx_sdram.c')) ppc_ss.add(when: 'CONFIG_SAM460EX', if_true: files('sam460ex.c')) # PReP ppc_ss.add(when: 'CONFIG_PREP', if_true: files('prep.c')) diff --git a/hw/ppc/ppc440_uc.c b/hw/ppc/ppc440_uc.c index 24623ebe0c..651263926e 100644 --- a/hw/ppc/ppc440_uc.c +++ b/hw/ppc/ppc440_uc.c @@ -10,21 +10,14 @@ #include "qemu/osdep.h" #include "qemu/units.h" -#include "qemu/error-report.h" #include "qapi/error.h" #include "qemu/log.h" -#include "qemu/module.h" #include "hw/irq.h" -#include "exec/memory.h" -#include "cpu.h" #include "hw/ppc/ppc4xx.h" #include "hw/qdev-properties.h" #include "hw/pci/pci.h" -#include "sysemu/block-backend.h" #include "sysemu/reset.h" #include "ppc440.h" -#include "qom/object.h" -#include "trace.h" /*****************************************************************************/ /* L2 Cache as SRAM */ @@ -478,327 +471,6 @@ void ppc4xx_sdr_init(CPUPPCState *env) sdr, &dcr_read_sdr, &dcr_write_sdr); } -/*****************************************************************************/ -/* SDRAM controller */ -enum { - SDRAM0_CFGADDR = 0x10, - SDRAM0_CFGDATA, - SDRAM_R0BAS = 0x40, - SDRAM_R1BAS, - SDRAM_R2BAS, - SDRAM_R3BAS, - SDRAM_CONF1HB = 0x45, - SDRAM_PLBADDULL = 0x4a, - SDRAM_CONF1LL = 0x4b, - SDRAM_CONFPATHB = 0x4f, - SDRAM_PLBADDUHB = 0x50, -}; - -static uint32_t sdram_ddr2_bcr(hwaddr ram_base, hwaddr ram_size) -{ - uint32_t bcr; - - switch (ram_size) { - case 8 * MiB: - bcr = 0xffc0; - break; - case 16 * MiB: - bcr = 0xff80; - break; - case 32 * MiB: - bcr = 0xff00; - break; - case 64 * MiB: - bcr = 0xfe00; - break; - case 128 * MiB: - bcr = 0xfc00; - break; - case 256 * MiB: - bcr = 0xf800; - break; - case 512 * MiB: - bcr = 0xf000; - break; - case 1 * GiB: - bcr = 0xe000; - break; - case 2 * GiB: - bcr = 0xc000; - break; - case 4 * GiB: - bcr = 0x8000; - break; - default: - error_report("invalid RAM size " TARGET_FMT_plx, ram_size); - return 0; - } - bcr |= ram_base >> 2 & 0xffe00000; - bcr |= 1; - - return bcr; -} - -static inline hwaddr sdram_ddr2_base(uint32_t bcr) -{ - return (bcr & 0xffe00000) << 2; -} - -static uint64_t sdram_ddr2_size(uint32_t bcr) -{ - uint64_t size; - int sh; - - sh = 1024 - ((bcr >> 6) & 0x3ff); - size = 8 * MiB * sh; - - return size; -} - -static void sdram_bank_map(Ppc4xxSdramBank *bank) -{ - memory_region_init(&bank->container, NULL, "sdram-container", bank->size); - memory_region_add_subregion(&bank->container, 0, &bank->ram); - memory_region_add_subregion(get_system_memory(), bank->base, - &bank->container); -} - -static void sdram_bank_unmap(Ppc4xxSdramBank *bank) -{ - memory_region_del_subregion(get_system_memory(), &bank->container); - memory_region_del_subregion(&bank->container, &bank->ram); - object_unparent(OBJECT(&bank->container)); -} - -static void sdram_ddr2_set_bcr(Ppc4xxSdramDdr2State *sdram, int i, - uint32_t bcr, int enabled) -{ - if (sdram->bank[i].bcr & 1) { - /* First unmap RAM if enabled */ - trace_ppc4xx_sdram_unmap(sdram_ddr2_base(sdram->bank[i].bcr), - sdram_ddr2_size(sdram->bank[i].bcr)); - sdram_bank_unmap(&sdram->bank[i]); - } - sdram->bank[i].bcr = bcr & 0xffe0ffc1; - if (enabled && (bcr & 1)) { - trace_ppc4xx_sdram_map(sdram_ddr2_base(bcr), sdram_ddr2_size(bcr)); - sdram_bank_map(&sdram->bank[i]); - } -} - -static void sdram_ddr2_map_bcr(Ppc4xxSdramDdr2State *sdram) -{ - int i; - - for (i = 0; i < sdram->nbanks; i++) { - if (sdram->bank[i].size) { - sdram_ddr2_set_bcr(sdram, i, - sdram_ddr2_bcr(sdram->bank[i].base, - sdram->bank[i].size), 1); - } else { - sdram_ddr2_set_bcr(sdram, i, 0, 0); - } - } -} - -static void sdram_ddr2_unmap_bcr(Ppc4xxSdramDdr2State *sdram) -{ - int i; - - for (i = 0; i < sdram->nbanks; i++) { - if (sdram->bank[i].size) { - sdram_ddr2_set_bcr(sdram, i, sdram->bank[i].bcr & ~1, 0); - } - } -} - -static uint32_t sdram_ddr2_dcr_read(void *opaque, int dcrn) -{ - Ppc4xxSdramDdr2State *sdram = opaque; - uint32_t ret = 0; - - switch (dcrn) { - case SDRAM_R0BAS: - case SDRAM_R1BAS: - case SDRAM_R2BAS: - case SDRAM_R3BAS: - if (sdram->bank[dcrn - SDRAM_R0BAS].size) { - ret = sdram_ddr2_bcr(sdram->bank[dcrn - SDRAM_R0BAS].base, - sdram->bank[dcrn - SDRAM_R0BAS].size); - } - break; - case SDRAM_CONF1HB: - case SDRAM_CONF1LL: - case SDRAM_CONFPATHB: - case SDRAM_PLBADDULL: - case SDRAM_PLBADDUHB: - break; - case SDRAM0_CFGADDR: - ret = sdram->addr; - break; - case SDRAM0_CFGDATA: - switch (sdram->addr) { - case 0x14: /* SDRAM_MCSTAT (405EX) */ - case 0x1F: - ret = 0x80000000; - break; - case 0x21: /* SDRAM_MCOPT2 */ - ret = sdram->mcopt2; - break; - case 0x40: /* SDRAM_MB0CF */ - ret = 0x00008001; - break; - case 0x7A: /* SDRAM_DLCR */ - ret = 0x02000000; - break; - case 0xE1: /* SDR0_DDR0 */ - ret = SDR0_DDR0_DDRM_ENCODE(1) | SDR0_DDR0_DDRM_DDR1; - break; - default: - break; - } - break; - default: - break; - } - - return ret; -} - -#define SDRAM_DDR2_MCOPT2_DCEN BIT(27) - -static void sdram_ddr2_dcr_write(void *opaque, int dcrn, uint32_t val) -{ - Ppc4xxSdramDdr2State *sdram = opaque; - - switch (dcrn) { - case SDRAM_R0BAS: - case SDRAM_R1BAS: - case SDRAM_R2BAS: - case SDRAM_R3BAS: - case SDRAM_CONF1HB: - case SDRAM_CONF1LL: - case SDRAM_CONFPATHB: - case SDRAM_PLBADDULL: - case SDRAM_PLBADDUHB: - break; - case SDRAM0_CFGADDR: - sdram->addr = val; - break; - case SDRAM0_CFGDATA: - switch (sdram->addr) { - case 0x00: /* B0CR */ - break; - case 0x21: /* SDRAM_MCOPT2 */ - if (!(sdram->mcopt2 & SDRAM_DDR2_MCOPT2_DCEN) && - (val & SDRAM_DDR2_MCOPT2_DCEN)) { - trace_ppc4xx_sdram_enable("enable"); - /* validate all RAM mappings */ - sdram_ddr2_map_bcr(sdram); - sdram->mcopt2 |= SDRAM_DDR2_MCOPT2_DCEN; - } else if ((sdram->mcopt2 & SDRAM_DDR2_MCOPT2_DCEN) && - !(val & SDRAM_DDR2_MCOPT2_DCEN)) { - trace_ppc4xx_sdram_enable("disable"); - /* invalidate all RAM mappings */ - sdram_ddr2_unmap_bcr(sdram); - sdram->mcopt2 &= ~SDRAM_DDR2_MCOPT2_DCEN; - } - break; - default: - break; - } - break; - default: - break; - } -} - -static void ppc4xx_sdram_ddr2_reset(DeviceState *dev) -{ - Ppc4xxSdramDdr2State *sdram = PPC4xx_SDRAM_DDR2(dev); - - sdram->addr = 0; - sdram->mcopt2 = 0; -} - -static void ppc4xx_sdram_ddr2_realize(DeviceState *dev, Error **errp) -{ - Ppc4xxSdramDdr2State *s = PPC4xx_SDRAM_DDR2(dev); - Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev); - const ram_addr_t valid_bank_sizes[] = { - 4 * GiB, 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB, 64 * MiB, - 32 * MiB, 16 * MiB, 8 * MiB, 0 - }; - - if (s->nbanks < 1 || s->nbanks > 4) { - error_setg(errp, "Invalid number of RAM banks"); - return; - } - if (!s->dram_mr) { - error_setg(errp, "Missing dram memory region"); - return; - } - ppc4xx_sdram_banks(s->dram_mr, s->nbanks, s->bank, valid_bank_sizes); - - ppc4xx_dcr_register(dcr, SDRAM0_CFGADDR, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM0_CFGDATA, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - - ppc4xx_dcr_register(dcr, SDRAM_R0BAS, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_R1BAS, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_R2BAS, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_R3BAS, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_CONF1HB, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_PLBADDULL, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_CONF1LL, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_CONFPATHB, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); - ppc4xx_dcr_register(dcr, SDRAM_PLBADDUHB, - s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); -} - -static Property ppc4xx_sdram_ddr2_props[] = { - DEFINE_PROP_LINK("dram", Ppc4xxSdramDdr2State, dram_mr, TYPE_MEMORY_REGION, - MemoryRegion *), - DEFINE_PROP_UINT32("nbanks", Ppc4xxSdramDdr2State, nbanks, 4), - DEFINE_PROP_END_OF_LIST(), -}; - -static void ppc4xx_sdram_ddr2_class_init(ObjectClass *oc, void *data) -{ - DeviceClass *dc = DEVICE_CLASS(oc); - - dc->realize = ppc4xx_sdram_ddr2_realize; - dc->reset = ppc4xx_sdram_ddr2_reset; - /* Reason: only works as function of a ppc4xx SoC */ - dc->user_creatable = false; - device_class_set_props(dc, ppc4xx_sdram_ddr2_props); -} - -void ppc4xx_sdram_ddr2_enable(Ppc4xxSdramDdr2State *s) -{ - sdram_ddr2_dcr_write(s, SDRAM0_CFGADDR, 0x21); - sdram_ddr2_dcr_write(s, SDRAM0_CFGDATA, 0x08000000); -} - -static const TypeInfo ppc4xx_types[] = { - { - .name = TYPE_PPC4xx_SDRAM_DDR2, - .parent = TYPE_PPC4xx_DCR_DEVICE, - .instance_size = sizeof(Ppc4xxSdramDdr2State), - .class_init = ppc4xx_sdram_ddr2_class_init, - } -}; -DEFINE_TYPES(ppc4xx_types) - /*****************************************************************************/ /* PLB to AHB bridge */ enum { diff --git a/hw/ppc/ppc4xx_sdram.c b/hw/ppc/ppc4xx_sdram.c new file mode 100644 index 0000000000..3925250d70 --- /dev/null +++ b/hw/ppc/ppc4xx_sdram.c @@ -0,0 +1,344 @@ +/* + * DDR2 SDRAM controller: + * Copyright (c) 2012 François Revol + * Copyright (c) 2016-2019 BALATON Zoltan + * + * This work is licensed under the GNU GPL license version 2 or later. + */ + +#include "qemu/osdep.h" +#include "qemu/units.h" +#include "qapi/error.h" +#include "exec/address-spaces.h" /* get_system_memory() */ +#include "hw/irq.h" +#include "hw/qdev-properties.h" +#include "hw/ppc/ppc4xx.h" +#include "trace.h" + +/*****************************************************************************/ +/* Shared functions */ + +static void sdram_bank_map(Ppc4xxSdramBank *bank) +{ + memory_region_init(&bank->container, NULL, "sdram-container", bank->size); + memory_region_add_subregion(&bank->container, 0, &bank->ram); + memory_region_add_subregion(get_system_memory(), bank->base, + &bank->container); +} + +static void sdram_bank_unmap(Ppc4xxSdramBank *bank) +{ + memory_region_del_subregion(get_system_memory(), &bank->container); + memory_region_del_subregion(&bank->container, &bank->ram); + object_unparent(OBJECT(&bank->container)); +} + +enum { + SDRAM0_CFGADDR = 0x010, + SDRAM0_CFGDATA = 0x011, +}; + +/*****************************************************************************/ +/* DDR2 SDRAM controller */ +enum { + SDRAM_R0BAS = 0x40, + SDRAM_R1BAS, + SDRAM_R2BAS, + SDRAM_R3BAS, + SDRAM_CONF1HB = 0x45, + SDRAM_PLBADDULL = 0x4a, + SDRAM_CONF1LL = 0x4b, + SDRAM_CONFPATHB = 0x4f, + SDRAM_PLBADDUHB = 0x50, +}; + +static uint32_t sdram_ddr2_bcr(hwaddr ram_base, hwaddr ram_size) +{ + uint32_t bcr; + + switch (ram_size) { + case 8 * MiB: + bcr = 0xffc0; + break; + case 16 * MiB: + bcr = 0xff80; + break; + case 32 * MiB: + bcr = 0xff00; + break; + case 64 * MiB: + bcr = 0xfe00; + break; + case 128 * MiB: + bcr = 0xfc00; + break; + case 256 * MiB: + bcr = 0xf800; + break; + case 512 * MiB: + bcr = 0xf000; + break; + case 1 * GiB: + bcr = 0xe000; + break; + case 2 * GiB: + bcr = 0xc000; + break; + case 4 * GiB: + bcr = 0x8000; + break; + default: + error_report("invalid RAM size " TARGET_FMT_plx, ram_size); + return 0; + } + bcr |= ram_base >> 2 & 0xffe00000; + bcr |= 1; + + return bcr; +} + +static inline hwaddr sdram_ddr2_base(uint32_t bcr) +{ + return (bcr & 0xffe00000) << 2; +} + +static uint64_t sdram_ddr2_size(uint32_t bcr) +{ + uint64_t size; + int sh; + + sh = 1024 - ((bcr >> 6) & 0x3ff); + size = 8 * MiB * sh; + + return size; +} + +static void sdram_ddr2_set_bcr(Ppc4xxSdramDdr2State *sdram, int i, + uint32_t bcr, int enabled) +{ + if (sdram->bank[i].bcr & 1) { + /* First unmap RAM if enabled */ + trace_ppc4xx_sdram_unmap(sdram_ddr2_base(sdram->bank[i].bcr), + sdram_ddr2_size(sdram->bank[i].bcr)); + sdram_bank_unmap(&sdram->bank[i]); + } + sdram->bank[i].bcr = bcr & 0xffe0ffc1; + if (enabled && (bcr & 1)) { + trace_ppc4xx_sdram_map(sdram_ddr2_base(bcr), sdram_ddr2_size(bcr)); + sdram_bank_map(&sdram->bank[i]); + } +} + +static void sdram_ddr2_map_bcr(Ppc4xxSdramDdr2State *sdram) +{ + int i; + + for (i = 0; i < sdram->nbanks; i++) { + if (sdram->bank[i].size) { + sdram_ddr2_set_bcr(sdram, i, + sdram_ddr2_bcr(sdram->bank[i].base, + sdram->bank[i].size), 1); + } else { + sdram_ddr2_set_bcr(sdram, i, 0, 0); + } + } +} + +static void sdram_ddr2_unmap_bcr(Ppc4xxSdramDdr2State *sdram) +{ + int i; + + for (i = 0; i < sdram->nbanks; i++) { + if (sdram->bank[i].size) { + sdram_ddr2_set_bcr(sdram, i, sdram->bank[i].bcr & ~1, 0); + } + } +} + +static uint32_t sdram_ddr2_dcr_read(void *opaque, int dcrn) +{ + Ppc4xxSdramDdr2State *sdram = opaque; + uint32_t ret = 0; + + switch (dcrn) { + case SDRAM_R0BAS: + case SDRAM_R1BAS: + case SDRAM_R2BAS: + case SDRAM_R3BAS: + if (sdram->bank[dcrn - SDRAM_R0BAS].size) { + ret = sdram_ddr2_bcr(sdram->bank[dcrn - SDRAM_R0BAS].base, + sdram->bank[dcrn - SDRAM_R0BAS].size); + } + break; + case SDRAM_CONF1HB: + case SDRAM_CONF1LL: + case SDRAM_CONFPATHB: + case SDRAM_PLBADDULL: + case SDRAM_PLBADDUHB: + break; + case SDRAM0_CFGADDR: + ret = sdram->addr; + break; + case SDRAM0_CFGDATA: + switch (sdram->addr) { + case 0x14: /* SDRAM_MCSTAT (405EX) */ + case 0x1F: + ret = 0x80000000; + break; + case 0x21: /* SDRAM_MCOPT2 */ + ret = sdram->mcopt2; + break; + case 0x40: /* SDRAM_MB0CF */ + ret = 0x00008001; + break; + case 0x7A: /* SDRAM_DLCR */ + ret = 0x02000000; + break; + case 0xE1: /* SDR0_DDR0 */ + ret = SDR0_DDR0_DDRM_ENCODE(1) | SDR0_DDR0_DDRM_DDR1; + break; + default: + break; + } + break; + default: + break; + } + + return ret; +} + +#define SDRAM_DDR2_MCOPT2_DCEN BIT(27) + +static void sdram_ddr2_dcr_write(void *opaque, int dcrn, uint32_t val) +{ + Ppc4xxSdramDdr2State *sdram = opaque; + + switch (dcrn) { + case SDRAM_R0BAS: + case SDRAM_R1BAS: + case SDRAM_R2BAS: + case SDRAM_R3BAS: + case SDRAM_CONF1HB: + case SDRAM_CONF1LL: + case SDRAM_CONFPATHB: + case SDRAM_PLBADDULL: + case SDRAM_PLBADDUHB: + break; + case SDRAM0_CFGADDR: + sdram->addr = val; + break; + case SDRAM0_CFGDATA: + switch (sdram->addr) { + case 0x00: /* B0CR */ + break; + case 0x21: /* SDRAM_MCOPT2 */ + if (!(sdram->mcopt2 & SDRAM_DDR2_MCOPT2_DCEN) && + (val & SDRAM_DDR2_MCOPT2_DCEN)) { + trace_ppc4xx_sdram_enable("enable"); + /* validate all RAM mappings */ + sdram_ddr2_map_bcr(sdram); + sdram->mcopt2 |= SDRAM_DDR2_MCOPT2_DCEN; + } else if ((sdram->mcopt2 & SDRAM_DDR2_MCOPT2_DCEN) && + !(val & SDRAM_DDR2_MCOPT2_DCEN)) { + trace_ppc4xx_sdram_enable("disable"); + /* invalidate all RAM mappings */ + sdram_ddr2_unmap_bcr(sdram); + sdram->mcopt2 &= ~SDRAM_DDR2_MCOPT2_DCEN; + } + break; + default: + break; + } + break; + default: + break; + } +} + +static void ppc4xx_sdram_ddr2_reset(DeviceState *dev) +{ + Ppc4xxSdramDdr2State *sdram = PPC4xx_SDRAM_DDR2(dev); + + sdram->addr = 0; + sdram->mcopt2 = 0; +} + +static void ppc4xx_sdram_ddr2_realize(DeviceState *dev, Error **errp) +{ + Ppc4xxSdramDdr2State *s = PPC4xx_SDRAM_DDR2(dev); + Ppc4xxDcrDeviceState *dcr = PPC4xx_DCR_DEVICE(dev); + const ram_addr_t valid_bank_sizes[] = { + 4 * GiB, 2 * GiB, 1 * GiB, 512 * MiB, 256 * MiB, 128 * MiB, 64 * MiB, + 32 * MiB, 16 * MiB, 8 * MiB, 0 + }; + + if (s->nbanks < 1 || s->nbanks > 4) { + error_setg(errp, "Invalid number of RAM banks"); + return; + } + if (!s->dram_mr) { + error_setg(errp, "Missing dram memory region"); + return; + } + ppc4xx_sdram_banks(s->dram_mr, s->nbanks, s->bank, valid_bank_sizes); + + ppc4xx_dcr_register(dcr, SDRAM0_CFGADDR, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM0_CFGDATA, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + + ppc4xx_dcr_register(dcr, SDRAM_R0BAS, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_R1BAS, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_R2BAS, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_R3BAS, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_CONF1HB, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_PLBADDULL, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_CONF1LL, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_CONFPATHB, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); + ppc4xx_dcr_register(dcr, SDRAM_PLBADDUHB, + s, &sdram_ddr2_dcr_read, &sdram_ddr2_dcr_write); +} + +static Property ppc4xx_sdram_ddr2_props[] = { + DEFINE_PROP_LINK("dram", Ppc4xxSdramDdr2State, dram_mr, TYPE_MEMORY_REGION, + MemoryRegion *), + DEFINE_PROP_UINT32("nbanks", Ppc4xxSdramDdr2State, nbanks, 4), + DEFINE_PROP_END_OF_LIST(), +}; + +static void ppc4xx_sdram_ddr2_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + + dc->realize = ppc4xx_sdram_ddr2_realize; + dc->reset = ppc4xx_sdram_ddr2_reset; + /* Reason: only works as function of a ppc4xx SoC */ + dc->user_creatable = false; + device_class_set_props(dc, ppc4xx_sdram_ddr2_props); +} + +void ppc4xx_sdram_ddr2_enable(Ppc4xxSdramDdr2State *s) +{ + sdram_ddr2_dcr_write(s, SDRAM0_CFGADDR, 0x21); + sdram_ddr2_dcr_write(s, SDRAM0_CFGDATA, 0x08000000); +} + +static const TypeInfo ppc4xx_sdram_types[] = { + { + .name = TYPE_PPC4xx_SDRAM_DDR2, + .parent = TYPE_PPC4xx_DCR_DEVICE, + .instance_size = sizeof(Ppc4xxSdramDdr2State), + .class_init = ppc4xx_sdram_ddr2_class_init, + } +}; + +DEFINE_TYPES(ppc4xx_sdram_types)